diff options
| -rw-r--r-- | Documentation/git-merge.txt | 27 | ||||
| -rw-r--r-- | Documentation/git-notes.txt | 85 | ||||
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | builtin.h | 2 | ||||
| -rw-r--r-- | builtin/merge.c | 47 | ||||
| -rw-r--r-- | builtin/notes.c | 268 | ||||
| -rw-r--r-- | notes-cache.c | 3 | ||||
| -rw-r--r-- | notes-merge.c | 737 | ||||
| -rw-r--r-- | notes-merge.h | 98 | ||||
| -rw-r--r-- | notes.c | 272 | ||||
| -rw-r--r-- | notes.h | 47 | ||||
| -rwxr-xr-x | t/t3301-notes.sh | 23 | ||||
| -rwxr-xr-x | t/t3303-notes-subtrees.sh | 19 | ||||
| -rwxr-xr-x | t/t3308-notes-merge.sh | 368 | ||||
| -rwxr-xr-x | t/t3309-notes-merge-auto-resolve.sh | 647 | ||||
| -rwxr-xr-x | t/t3310-notes-merge-manual-resolve.sh | 556 | ||||
| -rwxr-xr-x | t/t3311-notes-merge-fanout.sh | 436 | ||||
| -rwxr-xr-x | t/t3404-rebase-interactive.sh | 1 | ||||
| -rwxr-xr-x | t/t7609-merge-abort.sh | 313 | ||||
| -rwxr-xr-x | t/t9301-fast-import-notes.sh | 5 |
20 files changed, 3794 insertions, 162 deletions
diff --git a/Documentation/git-merge.txt b/Documentation/git-merge.txt index d43416d299..c1efaaa5c5 100644 --- a/Documentation/git-merge.txt +++ b/Documentation/git-merge.txt @@ -13,6 +13,7 @@ SYNOPSIS [-s <strategy>] [-X <strategy-option>] [--[no-]rerere-autoupdate] [-m <msg>] <commit>... 'git merge' <msg> HEAD <commit>... +'git merge' --abort DESCRIPTION ----------- @@ -47,6 +48,14 @@ The second syntax (<msg> `HEAD` <commit>...) is supported for historical reasons. Do not use it from the command line or in new scripts. It is the same as `git merge -m <msg> <commit>...`. +The third syntax ("`git merge --abort`") can only be run after the +merge has resulted in conflicts. 'git merge --abort' will abort the +merge process and try to reconstruct the pre-merge state. However, +if there were uncommitted changes when the merge started (and +especially if those changes were further modified after the merge +was started), 'git merge --abort' will in some cases be unable to +reconstruct the original (pre-merge) changes. Therefore: + *Warning*: Running 'git merge' with uncommitted changes is discouraged: while possible, it leaves you in a state that is hard to back out of in the case of a conflict. @@ -72,6 +81,18 @@ invocations. Allow the rerere mechanism to update the index with the result of auto-conflict resolution if possible. +--abort:: + Abort the current conflict resolution process, and + try to reconstruct the pre-merge state. ++ +If there were uncommitted worktree changes present when the merge +started, 'git merge --abort' will in some cases be unable to +reconstruct these changes. It is therefore recommended to always +commit or stash your changes before running 'git merge'. ++ +'git merge --abort' is equivalent to 'git reset --merge' when +`MERGE_HEAD` is present. + <commit>...:: Commits, usually other branch heads, to merge into our branch. You need at least one <commit>. Specifying more than one @@ -142,7 +163,7 @@ happens: i.e. matching `HEAD`. If you tried a merge which resulted in complex conflicts and -want to start over, you can recover with `git reset --merge`. +want to start over, you can recover with `git merge --abort`. HOW CONFLICTS ARE PRESENTED --------------------------- @@ -213,8 +234,8 @@ After seeing a conflict, you can do two things: * Decide not to merge. The only clean-ups you need are to reset the index file to the `HEAD` commit to reverse 2. and to clean - up working tree changes made by 2. and 3.; `git-reset --hard` can - be used for this. + up working tree changes made by 2. and 3.; `git merge --abort` + can be used for this. * Resolve the conflicts. Git will mark the conflicts in the working tree. Edit the files into shape and diff --git a/Documentation/git-notes.txt b/Documentation/git-notes.txt index 2981d8c5ef..296f314eae 100644 --- a/Documentation/git-notes.txt +++ b/Documentation/git-notes.txt @@ -14,8 +14,12 @@ SYNOPSIS 'git notes' append [-F <file> | -m <msg> | (-c | -C) <object>] [<object>] 'git notes' edit [<object>] 'git notes' show [<object>] +'git notes' merge [-v | -q] [-s <strategy> ] <notes_ref> +'git notes' merge --commit [-v | -q] +'git notes' merge --abort [-v | -q] 'git notes' remove [<object>] 'git notes' prune [-n | -v] +'git notes' get-ref DESCRIPTION @@ -83,6 +87,21 @@ edit:: show:: Show the notes for a given object (defaults to HEAD). +merge:: + Merge the given notes ref into the current notes ref. + This will try to merge the changes made by the given + notes ref (called "remote") since the merge-base (if + any) into the current notes ref (called "local"). ++ +If conflicts arise and a strategy for automatically resolving +conflicting notes (see the -s/--strategy option) is not given, +the "manual" resolver is used. This resolver checks out the +conflicting notes in a special worktree (`.git/NOTES_MERGE_WORKTREE`), +and instructs the user to manually resolve the conflicts there. +When done, the user can either finalize the merge with +'git notes merge --commit', or abort the merge with +'git notes merge --abort'. + remove:: Remove the notes for a given object (defaults to HEAD). This is equivalent to specifying an empty note message to @@ -91,6 +110,10 @@ remove:: prune:: Remove all notes for non-existing/unreachable objects. +get-ref:: + Print the current notes ref. This provides an easy way to + retrieve the current notes ref (e.g. from scripts). + OPTIONS ------- -f:: @@ -133,9 +156,37 @@ OPTIONS Do not remove anything; just report the object names whose notes would be removed. +-s <strategy>:: +--strategy=<strategy>:: + When merging notes, resolve notes conflicts using the given + strategy. The following strategies are recognized: "manual" + (default), "ours", "theirs", "union" and "cat_sort_uniq". + See the "NOTES MERGE STRATEGIES" section below for more + information on each notes merge strategy. + +--commit:: + Finalize an in-progress 'git notes merge'. Use this option + when you have resolved the conflicts that 'git notes merge' + stored in .git/NOTES_MERGE_WORKTREE. This amends the partial + merge commit created by 'git notes merge' (stored in + .git/NOTES_MERGE_PARTIAL) by adding the notes in + .git/NOTES_MERGE_WORKTREE. The notes ref stored in the + .git/NOTES_MERGE_REF symref is updated to the resulting commit. + +--abort:: + Abort/reset a in-progress 'git notes merge', i.e. a notes merge + with conflicts. This simply removes all files related to the + notes merge. + +-q:: +--quiet:: + When merging notes, operate quietly. + -v:: --verbose:: - Report all object names whose notes are removed. + When merging notes, be more verbose. + When pruning notes, report all object names whose notes are + removed. DISCUSSION @@ -163,6 +214,38 @@ object, in which case the history of the notes can be read with `git log -p -g <refname>`. +NOTES MERGE STRATEGIES +---------------------- + +The default notes merge strategy is "manual", which checks out +conflicting notes in a special work tree for resolving notes conflicts +(`.git/NOTES_MERGE_WORKTREE`), and instructs the user to resolve the +conflicts in that work tree. +When done, the user can either finalize the merge with +'git notes merge --commit', or abort the merge with +'git notes merge --abort'. + +"ours" automatically resolves conflicting notes in favor of the local +version (i.e. the current notes ref). + +"theirs" automatically resolves notes conflicts in favor of the remote +version (i.e. the given notes ref being merged into the current notes +ref). + +"union" automatically resolves notes conflicts by concatenating the +local and remote versions. + +"cat_sort_uniq" is similar to "union", but in addition to concatenating +the local and remote versions, this strategy also sorts the resulting +lines, and removes duplicate lines from the result. This is equivalent +to applying the "cat | sort | uniq" shell pipeline to the local and +remote versions. This strategy is useful if the notes follow a line-based +format where one wants to avoid duplicated lines in the merge result. +Note that if either the local or remote version contain duplicate lines +prior to the merge, these will also be removed by this notes merge +strategy. + + EXAMPLES -------- @@ -525,6 +525,7 @@ LIB_H += mailmap.h LIB_H += merge-recursive.h LIB_H += notes.h LIB_H += notes-cache.h +LIB_H += notes-merge.h LIB_H += object.h LIB_H += pack.h LIB_H += pack-refs.h @@ -615,6 +616,7 @@ LIB_OBJS += merge-recursive.o LIB_OBJS += name-hash.o LIB_OBJS += notes.o LIB_OBJS += notes-cache.o +LIB_OBJS += notes-merge.o LIB_OBJS += object.o LIB_OBJS += pack-check.o LIB_OBJS += pack-refs.o @@ -16,7 +16,7 @@ extern const char git_more_info_string[]; extern void prune_packed_objects(int); extern int fmt_merge_msg(struct strbuf *in, struct strbuf *out, int merge_title, int shortlog_len); -extern int commit_notes(struct notes_tree *t, const char *msg); +extern void commit_notes(struct notes_tree *t, const char *msg); struct notes_rewrite_cfg { struct notes_tree **trees; diff --git a/builtin/merge.c b/builtin/merge.c index c24a7be020..3921cd3040 100644 --- a/builtin/merge.c +++ b/builtin/merge.c @@ -57,6 +57,7 @@ static const char *branch; static int option_renormalize; static int verbosity; static int allow_rerere_auto; +static int abort_current_merge; static struct strategy all_strategy[] = { { "recursive", DEFAULT_TWOHEAD | NO_TRIVIAL }, @@ -197,6 +198,8 @@ static struct option builtin_merge_options[] = { "message to be used for the merge commit (if any)", option_parse_message), OPT__VERBOSITY(&verbosity), + OPT_BOOLEAN(0, "abort", &abort_current_merge, + "abort the current in-progress merge"), OPT_END() }; @@ -919,22 +922,6 @@ int cmd_merge(int argc, const char **argv, const char *prefix) const char *best_strategy = NULL, *wt_strategy = NULL; struct commit_list **remotes = &remoteheads; - if (read_cache_unmerged()) { - die_resolve_conflict("merge"); - } - if (file_exists(git_path("MERGE_HEAD"))) { - /* - * There is no unmerged entry, don't advise 'git - * add/rm <file>', just 'git commit'. - */ - if (advice_resolve_conflict) - die("You have not concluded your merge (MERGE_HEAD exists).\n" - "Please, commit your changes before you can merge."); - else - die("You have not concluded your merge (MERGE_HEAD exists)."); - } - - resolve_undo_clear(); /* * Check if we are _not_ on a detached HEAD, i.e. if there is a * current branch. @@ -953,6 +940,34 @@ int cmd_merge(int argc, const char **argv, const char *prefix) argc = parse_options(argc, argv, prefix, builtin_merge_options, builtin_merge_usage, 0); + + if (abort_current_merge) { + int nargc = 2; + const char *nargv[] = {"reset", "--merge", NULL}; + + if (!file_exists(git_path("MERGE_HEAD"))) + die("There is no merge to abort (MERGE_HEAD missing)."); + + /* Invoke 'git reset --merge' */ + return cmd_reset(nargc, nargv, prefix); + } + + if (read_cache_unmerged()) + die_resolve_conflict("merge"); + + if (file_exists(git_path("MERGE_HEAD"))) { + /* + * There is no unmerged entry, don't advise 'git + * add/rm <file>', just 'git commit'. + */ + if (advice_resolve_conflict) + die("You have not concluded your merge (MERGE_HEAD exists).\n" + "Please, commit your changes before you can merge."); + else + die("You have not concluded your merge (MERGE_HEAD exists)."); + } + resolve_undo_clear(); + if (verbosity < 0) show_diffstat = 0; diff --git a/builtin/notes.c b/builtin/notes.c index c85cbf5a47..4d5556e2cb 100644 --- a/builtin/notes.c +++ b/builtin/notes.c @@ -17,6 +17,7 @@ #include "run-command.h" #include "parse-options.h" #include "string-list.h" +#include "notes-merge.h" static const char * const git_notes_usage[] = { "git notes [--ref <notes_ref>] [list [<object>]]", @@ -25,8 +26,12 @@ static const char * const git_notes_usage[] = { "git notes [--ref <notes_ref>] append [-m <msg> | -F <file> | (-c | -C) <object>] [<object>]", "git notes [--ref <notes_ref>] edit [<object>]", "git notes [--ref <notes_ref>] show [<object>]", + "git notes [--ref <notes_ref>] merge [-v | -q] [-s <strategy> ] <notes_ref>", + "git notes merge --commit [-v | -q]", + "git notes merge --abort [-v | -q]", "git notes [--ref <notes_ref>] remove [<object>]", "git notes [--ref <notes_ref>] prune [-n | -v]", + "git notes [--ref <notes_ref>] get-ref", NULL }; @@ -61,6 +66,13 @@ static const char * const git_notes_show_usage[] = { NULL }; +static const char * const git_notes_merge_usage[] = { + "git notes merge [<options>] <notes_ref>", + "git notes merge --commit [<options>]", + "git notes merge --abort [<options>]", + NULL +}; + static const char * const git_notes_remove_usage[] = { "git notes remove [<object>]", NULL @@ -71,6 +83,11 @@ static const char * const git_notes_prune_usage[] = { NULL }; +static const char * const git_notes_get_ref_usage[] = { + "git notes get-ref", + NULL +}; + static const char note_template[] = "\n" "#\n" @@ -83,6 +100,16 @@ struct msg_arg { struct strbuf buf; }; +static void expand_notes_ref(struct strbuf *sb) +{ + if (!prefixcmp(sb->buf, "refs/notes/")) + return; /* we're happy */ + else if (!prefixcmp(sb->buf, "notes/")) + strbuf_insert(sb, 0, "refs/", 5); + else + strbuf_insert(sb, 0, "refs/notes/", 11); +} + static int list_each_note(const unsigned char *object_sha1, const unsigned char *note_sha1, char *note_path, void *cb_data) @@ -271,18 +298,17 @@ static int parse_reedit_arg(const struct option *opt, const char *arg, int unset return parse_reuse_arg(opt, arg, unset); } -int commit_notes(struct notes_tree *t, const char *msg) +void commit_notes(struct notes_tree *t, const char *msg) { - struct commit_list *parent; - unsigned char tree_sha1[20], prev_commit[20], new_commit[20]; struct strbuf buf = STRBUF_INIT; + unsigned char commit_sha1[20]; if (!t) t = &default_notes_tree; if (!t->initialized || !t->ref || !*t->ref) die("Cannot commit uninitialized/unreferenced notes tree"); if (!t->dirty) - return 0; /* don't have to commit an unchanged tree */ + return; /* don't have to commit an unchanged tree */ /* Prepare commit message and reflog message */ strbuf_addstr(&buf, "notes: "); /* commit message starts at index 7 */ @@ -290,27 +316,10 @@ int commit_notes(struct notes_tree *t, const char *msg) if (buf.buf[buf.len - 1] != '\n') strbuf_addch(&buf, '\n'); /* Make sure msg ends with newline */ - /* Convert notes tree to tree object */ - if (write_notes_tree(t, tree_sha1)) - die("Failed to write current notes tree to database"); - - /* Create new commit for the tree object */ - if (!read_ref(t->ref, prev_commit)) { /* retrieve parent commit */ - parent = xmalloc(sizeof(*parent)); - parent->item = lookup_commit(prev_commit); - parent->next = NULL; - } else { - hashclr(prev_commit); - parent = NULL; - } - if (commit_tree(buf.buf + 7, tree_sha1, parent, new_commit, NULL)) - die("Failed to commit notes tree to database"); - - /* Update notes ref with new commit */ - update_ref(buf.buf, t->ref, new_commit, prev_commit, 0, DIE_ON_ERR); + create_notes_commit(t, NULL, buf.buf + 7, commit_sha1); + update_ref(buf.buf, t->ref, commit_sha1, NULL, 0, DIE_ON_ERR); strbuf_release(&buf); - return 0; } combine_notes_fn parse_combine_notes_fn(const char *v) @@ -321,6 +330,8 @@ combine_notes_fn parse_combine_notes_fn(const char *v) return combine_notes_ignore; else if (!strcasecmp(v, "concatenate")) return combine_notes_concatenate; + else if (!strcasecmp(v, "cat_sort_uniq")) + return combine_notes_cat_sort_uniq; else return NULL; } @@ -573,8 +584,8 @@ static int add(int argc, const char **argv, const char *prefix) if (is_null_sha1(new_note)) remove_note(t, object); - else - add_note(t, object, new_note, combine_notes_overwrite); + else if (add_note(t, object, new_note, combine_notes_overwrite)) + die("BUG: combine_notes_overwrite failed"); snprintf(logmsg, sizeof(logmsg), "Notes %s by 'git notes %s'", is_null_sha1(new_note) ? "removed" : "added", "add"); @@ -653,7 +664,8 @@ static int copy(int argc, const char **argv, const char *prefix) goto out; } - add_note(t, object, from_note, combine_notes_overwrite); + if (add_note(t, object, from_note, combine_notes_overwrite)) + die("BUG: combine_notes_overwrite failed"); commit_notes(t, "Notes added by 'git notes copy'"); out: free_notes(t); @@ -712,8 +724,8 @@ static int append_edit(int argc, const char **argv, const char *prefix) if (is_null_sha1(new_note)) remove_note(t, object); - else - add_note(t, object, new_note, combine_notes_overwrite); + else if (add_note(t, object, new_note, combine_notes_overwrite)) + die("BUG: combine_notes_overwrite failed"); snprintf(logmsg, sizeof(logmsg), "Notes %s by 'git notes %s'", is_null_sha1(new_note) ? "removed" : "added", argv[0]); @@ -761,6 +773,180 @@ static int show(int argc, const char **argv, const char *prefix) return retval; } +static int merge_abort(struct notes_merge_options *o) +{ + int ret = 0; + + /* + * Remove .git/NOTES_MERGE_PARTIAL and .git/NOTES_MERGE_REF, and call + * notes_merge_abort() to remove .git/NOTES_MERGE_WORKTREE. + */ + + if (delete_ref("NOTES_MERGE_PARTIAL", NULL, 0)) + ret += error("Failed to delete ref NOTES_MERGE_PARTIAL"); + if (delete_ref("NOTES_MERGE_REF", NULL, REF_NODEREF)) + ret += error("Failed to delete ref NOTES_MERGE_REF"); + if (notes_merge_abort(o)) + ret += error("Failed to remove 'git notes merge' worktree"); + return ret; +} + +static int merge_commit(struct notes_merge_options *o) +{ + struct strbuf msg = STRBUF_INIT; + unsigned char sha1[20], parent_sha1[20]; + struct notes_tree *t; + struct commit *partial; + struct pretty_print_context pretty_ctx; + + /* + * Read partial merge result from .git/NOTES_MERGE_PARTIAL, + * and target notes ref from .git/NOTES_MERGE_REF. + */ + + if (get_sha1("NOTES_MERGE_PARTIAL", sha1)) + die("Failed to read ref NOTES_MERGE_PARTIAL"); + else if (!(partial = lookup_commit_reference(sha1))) + die("Could not find commit from NOTES_MERGE_PARTIAL."); + else if (parse_commit(partial)) + die("Could not parse commit from NOTES_MERGE_PARTIAL."); + + if (partial->parents) + hashcpy(parent_sha1, partial->parents->item->object.sha1); + else + hashclr(parent_sha1); + + t = xcalloc(1, sizeof(struct notes_tree)); + init_notes(t, "NOTES_MERGE_PARTIAL", combine_notes_overwrite, 0); + + o->local_ref = resolve_ref("NOTES_MERGE_REF", sha1, 0, 0); + if (!o->local_ref) + die("Failed to resolve NOTES_MERGE_REF"); + + if (notes_merge_commit(o, t, partial, sha1)) + die("Failed to finalize notes merge"); + + /* Reuse existing commit message in reflog message */ + memset(&pretty_ctx, 0, sizeof(pretty_ctx)); + format_commit_message(partial, "%s", &msg, &pretty_ctx); + strbuf_trim(&msg); + strbuf_insert(&msg, 0, "notes: ", 7); + update_ref(msg.buf, o->local_ref, sha1, + is_null_sha1(parent_sha1) ? NULL : parent_sha1, + 0, DIE_ON_ERR); + + free_notes(t); + strbuf_release(&msg); + return merge_abort(o); +} + +static int merge(int argc, const char **argv, const char *prefix) +{ + struct strbuf remote_ref = STRBUF_INIT, msg = STRBUF_INIT; + unsigned char result_sha1[20]; + struct notes_tree *t; + struct notes_merge_options o; + int do_merge = 0, do_commit = 0, do_abort = 0; + int verbosity = 0, result; + const char *strategy = NULL; + struct option options[] = { + OPT_GROUP("General options"), + OPT__VERBOSITY(&verbosity), + OPT_GROUP("Merge options"), + OPT_STRING('s', "strategy", &strategy, "strategy", + "resolve notes conflicts using the given strategy " + "(manual/ours/theirs/union/cat_sort_uniq)"), + OPT_GROUP("Committing unmerged notes"), + { OPTION_BOOLEAN, 0, "commit", &do_commit, NULL, + "finalize notes merge by committing unmerged notes", + PARSE_OPT_NOARG | PARSE_OPT_NONEG }, + OPT_GROUP("Aborting notes merge resolution"), + { OPTION_BOOLEAN, 0, "abort", &do_abort, NULL, + "abort notes merge", + PARSE_OPT_NOARG | PARSE_OPT_NONEG }, + OPT_END() + }; + + argc = parse_options(argc, argv, prefix, options, + git_notes_merge_usage, 0); + + if (strategy || do_commit + do_abort == 0) + do_merge = 1; + if (do_merge + do_commit + do_abort != 1) { + error("cannot mix --commit, --abort or -s/--strategy"); + usage_with_options(git_notes_merge_usage, options); + } + + if (do_merge && argc != 1) { + error("Must specify a notes ref to merge"); + usage_with_options(git_notes_merge_usage, options); + } else if (!do_merge && argc) { + error("too many parameters"); + usage_with_options(git_notes_merge_usage, options); + } + + init_notes_merge_options(&o); + o.verbosity = verbosity + NOTES_MERGE_VERBOSITY_DEFAULT; + + if (do_abort) + return merge_abort(&o); + if (do_commit) + return merge_commit(&o); + + o.local_ref = default_notes_ref(); + strbuf_addstr(&remote_ref, argv[0]); + expand_notes_ref(&remote_ref); + o.remote_ref = remote_ref.buf; + + if (strategy) { + if (!strcmp(strategy, "manual")) + o.strategy = NOTES_MERGE_RESOLVE_MANUAL; + else if (!strcmp(strategy, "ours")) + o.strategy = NOTES_MERGE_RESOLVE_OURS; + else if (!strcmp(strategy, "theirs")) + o.strategy = NOTES_MERGE_RESOLVE_THEIRS; + else if (!strcmp(strategy, "union")) + o.strategy = NOTES_MERGE_RESOLVE_UNION; + else if (!strcmp(strategy, "cat_sort_uniq")) + o.strategy = NOTES_MERGE_RESOLVE_CAT_SORT_UNIQ; + else { + error("Unknown -s/--strategy: %s", strategy); + usage_with_options(git_notes_merge_usage, options); + } + } + + t = init_notes_check("merge"); + + strbuf_addf(&msg, "notes: Merged notes from %s into %s", + remote_ref.buf, default_notes_ref()); + strbuf_add(&(o.commit_msg), msg.buf + 7, msg.len - 7); /* skip "notes: " */ + + result = notes_merge(&o, t, result_sha1); + + if (result >= 0) /* Merge resulted (trivially) in result_sha1 */ + /* Update default notes ref with new commit */ + update_ref(msg.buf, default_notes_ref(), result_sha1, NULL, + 0, DIE_ON_ERR); + else { /* Merge has unresolved conflicts */ + /* Update .git/NOTES_MERGE_PARTIAL with partial merge result */ + update_ref(msg.buf, "NOTES_MERGE_PARTIAL", result_sha1, NULL, + 0, DIE_ON_ERR); + /* Store ref-to-be-updated into .git/NOTES_MERGE_REF */ + if (create_symref("NOTES_MERGE_REF", default_notes_ref(), NULL)) + die("Failed to store link to current notes ref (%s)", + default_notes_ref()); + printf("Automatic notes merge failed. Fix conflicts in %s and " + "commit the result with 'git notes merge --commit', or " + "abort the merge with 'git notes merge --abort'.\n", + git_path(NOTES_MERGE_WORKTREE)); + } + + free_notes(t); + strbuf_release(&remote_ref); + strbuf_release(&msg); + return result < 0; /* return non-zero on conflicts */ +} + static int remove_cmd(int argc, const char **argv, const char *prefix) { struct option options[] = { @@ -827,6 +1013,21 @@ static int prune(int argc, const char **argv, const char *prefix) return 0; } +static int get_ref(int argc, const char **argv, const char *prefix) +{ + struct option options[] = { OPT_END() }; + argc = parse_options(argc, argv, prefix, options, + git_notes_get_ref_usage, 0); + + if (argc) { + error("too many parameters"); + usage_with_options(git_notes_get_ref_usage, options); + } + + puts(default_notes_ref()); + return 0; +} + int cmd_notes(int argc, const char **argv, const char *prefix) { int result; @@ -843,13 +1044,8 @@ int cmd_notes(int argc, const char **argv, const char *prefix) if (override_notes_ref) { struct strbuf sb = STRBUF_INIT; - if (!prefixcmp(override_notes_ref, "refs/notes/")) - /* we're happy */; - else if (!prefixcmp(override_notes_ref, "notes/")) - strbuf_addstr(&sb, "refs/"); - else - strbuf_addstr(&sb, "refs/notes/"); strbuf_addstr(&sb, override_notes_ref); + expand_notes_ref(&sb); setenv("GIT_NOTES_REF", sb.buf, 1); strbuf_release(&sb); } @@ -864,10 +1060,14 @@ int cmd_notes(int argc, const char **argv, const char *prefix) result = append_edit(argc, argv, prefix); else if (!strcmp(argv[0], "show")) result = show(argc, argv, prefix); + else if (!strcmp(argv[0], "merge")) + result = merge(argc, argv, prefix); else if (!strcmp(argv[0], "remove")) result = remove_cmd(argc, argv, prefix); else if (!strcmp(argv[0], "prune")) result = prune(argc, argv, prefix); + else if (!strcmp(argv[0], "get-ref")) + result = get_ref(argc, argv, prefix); else { result = error("Unknown subcommand: %s", argv[0]); usage_with_options(git_notes_usage, options); diff --git a/notes-cache.c b/notes-cache.c index dee6d62e72..4c8984ede1 100644 --- a/notes-cache.c +++ b/notes-cache.c @@ -89,6 +89,5 @@ int notes_cache_put(struct notes_cache *c, unsigned char key_sha1[20], if (write_sha1_file(data, size, "blob", value_sha1) < 0) return -1; - add_note(&c->tree, key_sha1, value_sha1, NULL); - return 0; + return add_note(&c->tree, key_sha1, value_sha1, NULL); } diff --git a/notes-merge.c b/notes-merge.c new file mode 100644 index 0000000000..71c4d45fcd --- /dev/null +++ b/notes-merge.c @@ -0,0 +1,737 @@ +#include "cache.h" +#include "commit.h" +#include "refs.h" +#include "diff.h" +#include "diffcore.h" +#include "xdiff-interface.h" +#include "ll-merge.h" +#include "dir.h" +#include "notes.h" +#include "notes-merge.h" +#include "strbuf.h" + +struct notes_merge_pair { + unsigned char obj[20], base[20], local[20], remote[20]; +}; + +void init_notes_merge_options(struct notes_merge_options *o) +{ + memset(o, 0, sizeof(struct notes_merge_options)); + strbuf_init(&(o->commit_msg), 0); + o->verbosity = NOTES_MERGE_VERBOSITY_DEFAULT; +} + +#define OUTPUT(o, v, ...) \ + do { \ + if ((o)->verbosity >= (v)) { \ + printf(__VA_ARGS__); \ + puts(""); \ + } \ + } while (0) + +static int path_to_sha1(const char *path, unsigned char *sha1) +{ + char hex_sha1[40]; + int i = 0; + while (*path && i < 40) { + if (*path != '/') + hex_sha1[i++] = *path; + path++; + } + if (*path || i != 40) + return -1; + return get_sha1_hex(hex_sha1, sha1); +} + +static int verify_notes_filepair(struct diff_filepair *p, unsigned char *sha1) +{ + switch (p->status) { + case DIFF_STATUS_MODIFIED: + assert(p->one->mode == p->two->mode); + assert(!is_null_sha1(p->one->sha1)); + assert(!is_null_sha1(p->two->sha1)); + break; + case DIFF_STATUS_ADDED: + assert(is_null_sha1(p->one->sha1)); + break; + case DIFF_STATUS_DELETED: + assert(is_null_sha1(p->two->sha1)); + break; + default: + return -1; + } + assert(!strcmp(p->one->path, p->two->path)); + return path_to_sha1(p->one->path, sha1); +} + +static struct notes_merge_pair *find_notes_merge_pair_pos( + struct notes_merge_pair *list, int len, unsigned char *obj, + int insert_new, int *occupied) +{ + /* + * Both diff_tree_remote() and diff_tree_local() tend to process + * merge_pairs in ascending order. Therefore, cache last returned + * index, and search sequentially from there until the appropriate + * position is found. + * + * Since inserts only happen from diff_tree_remote() (which mainly + * _appends_), we don't care that inserting into the middle of the + * list is expensive (using memmove()). + */ + static int last_index; + int i = last_index < len ? last_index : len - 1; + int prev_cmp = 0, cmp = -1; + while (i >= 0 && i < len) { + cmp = hashcmp(obj, list[i].obj); + if (!cmp) /* obj belongs @ i */ + break; + else if (cmp < 0 && prev_cmp <= 0) /* obj belongs < i */ + i--; + else if (cmp < 0) /* obj belongs between i-1 and i */ + break; + else if (cmp > 0 && prev_cmp >= 0) /* obj belongs > i */ + i++; + else /* if (cmp > 0) */ { /* obj belongs between i and i+1 */ + i++; + break; + } + prev_cmp = cmp; + } + if (i < 0) + i = 0; + /* obj belongs at, or immediately preceding, index i (0 <= i <= len) */ + + if (!cmp) + *occupied = 1; + else { + *occupied = 0; + if (insert_new && i < len) { + memmove(list + i + 1, list + i, + (len - i) * sizeof(struct notes_merge_pair)); + memset(list + i, 0, sizeof(struct notes_merge_pair)); + } + } + last_index = i; + return list + i; +} + +static unsigned char uninitialized[20] = + "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff" \ + "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"; + +static struct notes_merge_pair *diff_tree_remote(struct notes_merge_options *o, + const unsigned char *base, + const unsigned char *remote, + int *num_changes) +{ + struct diff_options opt; + struct notes_merge_pair *changes; + int i, len = 0; + + trace_printf("\tdiff_tree_remote(base = %.7s, remote = %.7s)\n", + sha1_to_hex(base), sha1_to_hex(remote)); + + diff_setup(&opt); + DIFF_OPT_SET(&opt, RECURSIVE); + opt.output_format = DIFF_FORMAT_NO_OUTPUT; + if (diff_setup_done(&opt) < 0) + die("diff_setup_done failed"); + diff_tree_sha1(base, remote, "", &opt); + diffcore_std(&opt); + + changes = xcalloc(diff_queued_diff.nr, sizeof(struct notes_merge_pair)); + + for (i = 0; i < diff_queued_diff.nr; i++) { + struct diff_filepair *p = diff_queued_diff.queue[i]; + struct notes_merge_pair *mp; + int occupied; + unsigned char obj[20]; + + if (verify_notes_filepair(p, obj)) { + trace_printf("\t\tCannot merge entry '%s' (%c): " + "%.7s -> %.7s. Skipping!\n", p->one->path, + p->status, sha1_to_hex(p->one->sha1), + sha1_to_hex(p->two->sha1)); + continue; + } + mp = find_notes_merge_pair_pos(changes, len, obj, 1, &occupied); + if (occupied) { + /* We've found an addition/deletion pair */ + assert(!hashcmp(mp->obj, obj)); + if (is_null_sha1(p->one->sha1)) { /* addition */ + assert(is_null_sha1(mp->remote)); + hashcpy(mp->remote, p->two->sha1); + } else if (is_null_sha1(p->two->sha1)) { /* deletion */ + assert(is_null_sha1(mp->base)); + hashcpy(mp->base, p->one->sha1); + } else + assert(!"Invalid existing change recorded"); + } else { + hashcpy(mp->obj, obj); + hashcpy(mp->base, p->one->sha1); + hashcpy(mp->local, uninitialized); + hashcpy(mp->remote, p->two->sha1); + len++; + } + trace_printf("\t\tStored remote change for %s: %.7s -> %.7s\n", + sha1_to_hex(mp->obj), sha1_to_hex(mp->base), + sha1_to_hex(mp->remote)); + } + diff_flush(&opt); + diff_tree_release_paths(&opt); + + *num_changes = len; + return changes; +} + +static void diff_tree_local(struct notes_merge_options *o, + struct notes_merge_pair *changes, int len, + const unsigned char *base, + const unsigned char *local) +{ + struct diff_options opt; + int i; + + trace_printf("\tdiff_tree_local(len = %i, base = %.7s, local = %.7s)\n", + len, sha1_to_hex(base), sha1_to_hex(local)); + + diff_setup(&opt); + DIFF_OPT_SET(&opt, RECURSIVE); + opt.output_format = DIFF_FORMAT_NO_OUTPUT; + if (diff_setup_done(&opt) < 0) + die("diff_setup_done failed"); + diff_tree_sha1(base, local, "", &opt); + diffcore_std(&opt); + + for (i = 0; i < diff_queued_diff.nr; i++) { + struct diff_filepair *p = diff_queued_diff.queue[i]; + struct notes_merge_pair *mp; + int match; + unsigned char obj[20]; + + if (verify_notes_filepair(p, obj)) { + trace_printf("\t\tCannot merge entry '%s' (%c): " + "%.7s -> %.7s. Skipping!\n", p->one->path, + p->status, sha1_to_hex(p->one->sha1), + sha1_to_hex(p->two->sha1)); + continue; + } + mp = find_notes_merge_pair_pos(changes, len, obj, 0, &match); + if (!match) { + trace_printf("\t\tIgnoring local-only change for %s: " + "%.7s -> %.7s\n", sha1_to_hex(obj), + sha1_to_hex(p->one->sha1), + sha1_to_hex(p->two->sha1)); + continue; + } + + assert(!hashcmp(mp->obj, obj)); + if (is_null_sha1(p->two->sha1)) { /* deletion */ + /* + * Either this is a true deletion (1), or it is part + * of an A/D pair (2), or D/A pair (3): + * + * (1) mp->local is uninitialized; set it to null_sha1 + * (2) mp->local is not uninitialized; don't touch it + * (3) mp->local is uninitialized; set it to null_sha1 + * (will be overwritten by following addition) + */ + if (!hashcmp(mp->local, uninitialized)) + hashclr(mp->local); + } else if (is_null_sha1(p->one->sha1)) { /* addition */ + /* + * Either this is a true addition (1), or it is part + * of an A/D pair (2), or D/A pair (3): + * + * (1) mp->local is uninitialized; set to p->two->sha1 + * (2) mp->local is uninitialized; set to p->two->sha1 + * (3) mp->local is null_sha1; set to p->two->sha1 + */ + assert(is_null_sha1(mp->local) || + !hashcmp(mp->local, uninitialized)); + hashcpy(mp->local, p->two->sha1); + } else { /* modification */ + /* + * This is a true modification. p->one->sha1 shall + * match mp->base, and mp->local shall be uninitialized. + * Set mp->local to p->two->sha1. + */ + assert(!hashcmp(p->one->sha1, mp->base)); + assert(!hashcmp(mp->local, uninitialized)); + hashcpy(mp->local, p->two->sha1); + } + trace_printf("\t\tStored local change for %s: %.7s -> %.7s\n", + sha1_to_hex(mp->obj), sha1_to_hex(mp->base), + sha1_to_hex(mp->local)); + } + diff_flush(&opt); + diff_tree_release_paths(&opt); +} + +static void check_notes_merge_worktree(struct notes_merge_options *o) +{ + if (!o->has_worktree) { + /* + * Must establish NOTES_MERGE_WORKTREE. + * Abort if NOTES_MERGE_WORKTREE already exists + */ + if (file_exists(git_path(NOTES_MERGE_WORKTREE))) { + if (advice_resolve_conflict) + die("You have not concluded your previous " + "notes merge (%s exists).\nPlease, use " + "'git notes merge --commit' or 'git notes " + "merge --abort' to commit/abort the " + "previous merge before you start a new " + "notes merge.", git_path("NOTES_MERGE_*")); + else + die("You have not concluded your notes merge " + "(%s exists).", git_path("NOTES_MERGE_*")); + } + + if (safe_create_leading_directories(git_path( + NOTES_MERGE_WORKTREE "/.test"))) + die_errno("unable to create directory %s", + git_path(NOTES_MERGE_WORKTREE)); + o->has_worktree = 1; + } else if (!file_exists(git_path(NOTES_MERGE_WORKTREE))) + /* NOTES_MERGE_WORKTREE should already be established */ + die("missing '%s'. This should not happen", + git_path(NOTES_MERGE_WORKTREE)); +} + +static void write_buf_to_worktree(const unsigned char *obj, + const char *buf, unsigned long size) +{ + int fd; + char *path = git_path(NOTES_MERGE_WORKTREE "/%s", sha1_to_hex(obj)); + if (safe_create_leading_directories(path)) + die_errno("unable to create directory for '%s'", path); + if (file_exists(path)) + die("found existing file at '%s'", path); + + fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, 0666); + if (fd < 0) + die_errno("failed to open '%s'", path); + + while (size > 0) { + long ret = write_in_full(fd, buf, size); + if (ret < 0) { + /* Ignore epipe */ + if (errno == EPIPE) + break; + die_errno("notes-merge"); + } else if (!ret) { + die("notes-merge: disk full?"); + } + size -= ret; + buf += ret; + } + + close(fd); +} + +static void write_note_to_worktree(const unsigned char *obj, + const unsigned char *note) +{ + enum object_type type; + unsigned long size; + void *buf = read_sha1_file(note, &type, &size); + + if (!buf) + die("cannot read note %s for object %s", + sha1_to_hex(note), sha1_to_hex(obj)); + if (type != OBJ_BLOB) + die("blob expected in note %s for object %s", + sha1_to_hex(note), sha1_to_hex(obj)); + write_buf_to_worktree(obj, buf, size); + free(buf); +} + +static int ll_merge_in_worktree(struct notes_merge_options *o, + struct notes_merge_pair *p) +{ + mmbuffer_t result_buf; + mmfile_t base, local, remote; + int status; + + read_mmblob(&base, p->base); + read_mmblob(&local, p->local); + read_mmblob(&remote, p->remote); + + status = ll_merge(&result_buf, sha1_to_hex(p->obj), &base, NULL, + &local, o->local_ref, &remote, o->remote_ref, 0); + + free(base.ptr); + free(local.ptr); + free(remote.ptr); + + if ((status < 0) || !result_buf.ptr) + die("Failed to execute internal merge"); + + write_buf_to_worktree(p->obj, result_buf.ptr, result_buf.size); + free(result_buf.ptr); + + return status; +} + +static int merge_one_change_manual(struct notes_merge_options *o, + struct notes_merge_pair *p, + struct notes_tree *t) +{ + const char *lref = o->local_ref ? o->local_ref : "local version"; + const char *rref = o->remote_ref ? o->remote_ref : "remote version"; + + trace_printf("\t\t\tmerge_one_change_manual(obj = %.7s, base = %.7s, " + "local = %.7s, remote = %.7s)\n", + sha1_to_hex(p->obj), sha1_to_hex(p->base), + sha1_to_hex(p->local), sha1_to_hex(p->remote)); + + /* add "Conflicts:" section to commit message first time through */ + if (!o->has_worktree) + strbuf_addstr(&(o->commit_msg), "\n\nConflicts:\n"); + + strbuf_addf(&(o->commit_msg), "\t%s\n", sha1_to_hex(p->obj)); + + OUTPUT(o, 2, "Auto-merging notes for %s", sha1_to_hex(p->obj)); + check_notes_merge_worktree(o); + if (is_null_sha1(p->local)) { + /* D/F conflict, checkout p->remote */ + assert(!is_null_sha1(p->remote)); + OUTPUT(o, 1, "CONFLICT (delete/modify): Notes for object %s " + "deleted in %s and modified in %s. Version from %s " + "left in tree.", sha1_to_hex(p->obj), lref, rref, rref); + write_note_to_worktree(p->obj, p->remote); + } else if (is_null_sha1(p->remote)) { + /* D/F conflict, checkout p->local */ + assert(!is_null_sha1(p->local)); + OUTPUT(o, 1, "CONFLICT (delete/modify): Notes for object %s " + "deleted in %s and modified in %s. Version from %s " + "left in tree.", sha1_to_hex(p->obj), rref, lref, lref); + write_note_to_worktree(p->obj, p->local); + } else { + /* "regular" conflict, checkout result of ll_merge() */ + const char *reason = "content"; + if (is_null_sha1(p->base)) + reason = "add/add"; + assert(!is_null_sha1(p->local)); + assert(!is_null_sha1(p->remote)); + OUTPUT(o, 1, "CONFLICT (%s): Merge conflict in notes for " + "object %s", reason, sha1_to_hex(p->obj)); + ll_merge_in_worktree(o, p); + } + + trace_printf("\t\t\tremoving from partial merge result\n"); + remove_note(t, p->obj); + + return 1; +} + +static int merge_one_change(struct notes_merge_options *o, + struct notes_merge_pair *p, struct notes_tree *t) +{ + /* + * Return 0 if change is successfully resolved (stored in notes_tree). + * Return 1 is change results in a conflict (NOT stored in notes_tree, + * but instead written to NOTES_MERGE_WORKTREE with conflict markers). + */ + switch (o->strategy) { + case NOTES_MERGE_RESOLVE_MANUAL: + return merge_one_change_manual(o, p, t); + case NOTES_MERGE_RESOLVE_OURS: + OUTPUT(o, 2, "Using local notes for %s", sha1_to_hex(p->obj)); + /* nothing to do */ + return 0; + case NOTES_MERGE_RESOLVE_THEIRS: + OUTPUT(o, 2, "Using remote notes for %s", sha1_to_hex(p->obj)); + if (add_note(t, p->obj, p->remote, combine_notes_overwrite)) + die("BUG: combine_notes_overwrite failed"); + return 0; + case NOTES_MERGE_RESOLVE_UNION: + OUTPUT(o, 2, "Concatenating local and remote notes for %s", + sha1_to_hex(p->obj)); + if (add_note(t, p->obj, p->remote, combine_notes_concatenate)) + die("failed to concatenate notes " + "(combine_notes_concatenate)"); + return 0; + case NOTES_MERGE_RESOLVE_CAT_SORT_UNIQ: + OUTPUT(o, 2, "Concatenating unique lines in local and remote " + "notes for %s", sha1_to_hex(p->obj)); + if (add_note(t, p->obj, p->remote, combine_notes_cat_sort_uniq)) + die("failed to concatenate notes " + "(combine_notes_cat_sort_uniq)"); + return 0; + } + die("Unknown strategy (%i).", o->strategy); +} + +static int merge_changes(struct notes_merge_options *o, + struct notes_merge_pair *changes, int *num_changes, + struct notes_tree *t) +{ + int i, conflicts = 0; + + trace_printf("\tmerge_changes(num_changes = %i)\n", *num_changes); + for (i = 0; i < *num_changes; i++) { + struct notes_merge_pair *p = changes + i; + trace_printf("\t\t%.7s: %.7s -> %.7s/%.7s\n", + sha1_to_hex(p->obj), sha1_to_hex(p->base), + sha1_to_hex(p->local), sha1_to_hex(p->remote)); + + if (!hashcmp(p->base, p->remote)) { + /* no remote change; nothing to do */ + trace_printf("\t\t\tskipping (no remote change)\n"); + } else if (!hashcmp(p->local, p->remote)) { + /* same change in local and remote; nothing to do */ + trace_printf("\t\t\tskipping (local == remote)\n"); + } else if (!hashcmp(p->local, uninitialized) || + !hashcmp(p->local, p->base)) { + /* no local change; adopt remote change */ + trace_printf("\t\t\tno local change, adopted remote\n"); + if (add_note(t, p->obj, p->remote, + combine_notes_overwrite)) + die("BUG: combine_notes_overwrite failed"); + } else { + /* need file-level merge between local and remote */ + trace_printf("\t\t\tneed content-level merge\n"); + conflicts += merge_one_change(o, p, t); + } + } + + return conflicts; +} + +static int merge_from_diffs(struct notes_merge_options *o, + const unsigned char *base, + const unsigned char *local, + const unsigned char *remote, struct notes_tree *t) +{ + struct notes_merge_pair *changes; + int num_changes, conflicts; + + trace_printf("\tmerge_from_diffs(base = %.7s, local = %.7s, " + "remote = %.7s)\n", sha1_to_hex(base), sha1_to_hex(local), + sha1_to_hex(remote)); + + changes = diff_tree_remote(o, base, remote, &num_changes); + diff_tree_local(o, changes, num_changes, base, local); + + conflicts = merge_changes(o, changes, &num_changes, t); + free(changes); + + OUTPUT(o, 4, "Merge result: %i unmerged notes and a %s notes tree", + conflicts, t->dirty ? "dirty" : "clean"); + + return conflicts ? -1 : 1; +} + +void create_notes_commit(struct notes_tree *t, struct commit_list *parents, + const char *msg, unsigned char *result_sha1) +{ + unsigned char tree_sha1[20]; + + assert(t->initialized); + + if (write_notes_tree(t, tree_sha1)) + die("Failed to write notes tree to database"); + + if (!parents) { + /* Deduce parent commit from t->ref */ + unsigned char parent_sha1[20]; + if (!read_ref(t->ref, parent_sha1)) { + struct commit *parent = lookup_commit(parent_sha1); + if (!parent || parse_commit(parent)) + die("Failed to find/parse commit %s", t->ref); + commit_list_insert(parent, &parents); + } + /* else: t->ref points to nothing, assume root/orphan commit */ + } + + if (commit_tree(msg, tree_sha1, parents, result_sha1, NULL)) + die("Failed to commit notes tree to database"); +} + +int notes_merge(struct notes_merge_options *o, + struct notes_tree *local_tree, + unsigned char *result_sha1) +{ + unsigned char local_sha1[20], remote_sha1[20]; + struct commit *local, *remote; + struct commit_list *bases = NULL; + const unsigned char *base_sha1, *base_tree_sha1; + int result = 0; + + assert(o->local_ref && o->remote_ref); + assert(!strcmp(o->local_ref, local_tree->ref)); + hashclr(result_sha1); + + trace_printf("notes_merge(o->local_ref = %s, o->remote_ref = %s)\n", + o->local_ref, o->remote_ref); + + /* Dereference o->local_ref into local_sha1 */ + if (!resolve_ref(o->local_ref, local_sha1, 0, NULL)) + die("Failed to resolve local notes ref '%s'", o->local_ref); + else if (!check_ref_format(o->local_ref) && is_null_sha1(local_sha1)) + local = NULL; /* local_sha1 == null_sha1 indicates unborn ref */ + else if (!(local = lookup_commit_reference(local_sha1))) + die("Could not parse local commit %s (%s)", + sha1_to_hex(local_sha1), o->local_ref); + trace_printf("\tlocal commit: %.7s\n", sha1_to_hex(local_sha1)); + + /* Dereference o->remote_ref into remote_sha1 */ + if (get_sha1(o->remote_ref, remote_sha1)) { + /* + * Failed to get remote_sha1. If o->remote_ref looks like an + * unborn ref, perform the merge using an empty notes tree. + */ + if (!check_ref_format(o->remote_ref)) { + hashclr(remote_sha1); + remote = NULL; + } else { + die("Failed to resolve remote notes ref '%s'", + o->remote_ref); + } + } else if (!(remote = lookup_commit_reference(remote_sha1))) { + die("Could not parse remote commit %s (%s)", + sha1_to_hex(remote_sha1), o->remote_ref); + } + trace_printf("\tremote commit: %.7s\n", sha1_to_hex(remote_sha1)); + + if (!local && !remote) + die("Cannot merge empty notes ref (%s) into empty notes ref " + "(%s)", o->remote_ref, o->local_ref); + if (!local) { + /* result == remote commit */ + hashcpy(result_sha1, remote_sha1); + goto found_result; + } + if (!remote) { + /* result == local commit */ + hashcpy(result_sha1, local_sha1); + goto found_result; + } + assert(local && remote); + + /* Find merge bases */ + bases = get_merge_bases(local, remote, 1); + if (!bases) { + base_sha1 = null_sha1; + base_tree_sha1 = (unsigned char *)EMPTY_TREE_SHA1_BIN; + OUTPUT(o, 4, "No merge base found; doing history-less merge"); + } else if (!bases->next) { + base_sha1 = bases->item->object.sha1; + base_tree_sha1 = bases->item->tree->object.sha1; + OUTPUT(o, 4, "One merge base found (%.7s)", + sha1_to_hex(base_sha1)); + } else { + /* TODO: How to handle multiple merge-bases? */ + base_sha1 = bases->item->object.sha1; + base_tree_sha1 = bases->item->tree->object.sha1; + OUTPUT(o, 3, "Multiple merge bases found. Using the first " + "(%.7s)", sha1_to_hex(base_sha1)); + } + + OUTPUT(o, 4, "Merging remote commit %.7s into local commit %.7s with " + "merge-base %.7s", sha1_to_hex(remote->object.sha1), + sha1_to_hex(local->object.sha1), sha1_to_hex(base_sha1)); + + if (!hashcmp(remote->object.sha1, base_sha1)) { + /* Already merged; result == local commit */ + OUTPUT(o, 2, "Already up-to-date!"); + hashcpy(result_sha1, local->object.sha1); + goto found_result; + } + if (!hashcmp(local->object.sha1, base_sha1)) { + /* Fast-forward; result == remote commit */ + OUTPUT(o, 2, "Fast-forward"); + hashcpy(result_sha1, remote->object.sha1); + goto found_result; + } + + result = merge_from_diffs(o, base_tree_sha1, local->tree->object.sha1, + remote->tree->object.sha1, local_tree); + + if (result != 0) { /* non-trivial merge (with or without conflicts) */ + /* Commit (partial) result */ + struct commit_list *parents = NULL; + commit_list_insert(remote, &parents); /* LIFO order */ + commit_list_insert(local, &parents); + create_notes_commit(local_tree, parents, o->commit_msg.buf, + result_sha1); + } + +found_result: + free_commit_list(bases); + strbuf_release(&(o->commit_msg)); + trace_printf("notes_merge(): result = %i, result_sha1 = %.7s\n", + result, sha1_to_hex(result_sha1)); + return result; +} + +int notes_merge_commit(struct notes_merge_options *o, + struct notes_tree *partial_tree, + struct commit *partial_commit, + unsigned char *result_sha1) +{ + /* + * Iterate through files in .git/NOTES_MERGE_WORKTREE and add all + * found notes to 'partial_tree'. Write the updates notes tree to + * the DB, and commit the resulting tree object while reusing the + * commit message and parents from 'partial_commit'. + * Finally store the new commit object SHA1 into 'result_sha1'. + */ + struct dir_struct dir; + const char *path = git_path(NOTES_MERGE_WORKTREE "/"); + int path_len = strlen(path), i; + const char *msg = strstr(partial_commit->buffer, "\n\n"); + + OUTPUT(o, 3, "Committing notes in notes merge worktree at %.*s", + path_len - 1, path); + + if (!msg || msg[2] == '\0') + die("partial notes commit has empty message"); + msg += 2; + + memset(&dir, 0, sizeof(dir)); + read_directory(&dir, path, path_len, NULL); + for (i = 0; i < dir.nr; i++) { + struct dir_entry *ent = dir.entries[i]; + struct stat st; + const char *relpath = ent->name + path_len; + unsigned char obj_sha1[20], blob_sha1[20]; + + if (ent->len - path_len != 40 || get_sha1_hex(relpath, obj_sha1)) { + OUTPUT(o, 3, "Skipping non-SHA1 entry '%s'", ent->name); + continue; + } + + /* write file as blob, and add to partial_tree */ + if (stat(ent->name, &st)) + die_errno("Failed to stat '%s'", ent->name); + if (index_path(blob_sha1, ent->name, &st, 1)) + die("Failed to write blob object from '%s'", ent->name); + if (add_note(partial_tree, obj_sha1, blob_sha1, NULL)) + die("Failed to add resolved note '%s' to notes tree", + ent->name); + OUTPUT(o, 4, "Added resolved note for object %s: %s", + sha1_to_hex(obj_sha1), sha1_to_hex(blob_sha1)); + } + + create_notes_commit(partial_tree, partial_commit->parents, msg, + result_sha1); + OUTPUT(o, 4, "Finalized notes merge commit: %s", + sha1_to_hex(result_sha1)); + return 0; +} + +int notes_merge_abort(struct notes_merge_options *o) +{ + /* Remove .git/NOTES_MERGE_WORKTREE directory and all files within */ + struct strbuf buf = STRBUF_INIT; + int ret; + + strbuf_addstr(&buf, git_path(NOTES_MERGE_WORKTREE)); + OUTPUT(o, 3, "Removing notes merge worktree at %s", buf.buf); + ret = remove_dir_recursively(&buf, 0); + strbuf_release(&buf); + return ret; +} diff --git a/notes-merge.h b/notes-merge.h new file mode 100644 index 0000000000..168a6724cd --- /dev/null +++ b/notes-merge.h @@ -0,0 +1,98 @@ +#ifndef NOTES_MERGE_H +#define NOTES_MERGE_H + +#define NOTES_MERGE_WORKTREE "NOTES_MERGE_WORKTREE" + +enum notes_merge_verbosity { + NOTES_MERGE_VERBOSITY_DEFAULT = 2, + NOTES_MERGE_VERBOSITY_MAX = 5 +}; + +struct notes_merge_options { + const char *local_ref; + const char *remote_ref; + struct strbuf commit_msg; + int verbosity; + enum { + NOTES_MERGE_RESOLVE_MANUAL = 0, + NOTES_MERGE_RESOLVE_OURS, + NOTES_MERGE_RESOLVE_THEIRS, + NOTES_MERGE_RESOLVE_UNION, + NOTES_MERGE_RESOLVE_CAT_SORT_UNIQ + } strategy; + unsigned has_worktree:1; +}; + +void init_notes_merge_options(struct notes_merge_options *o); + +/* + * Create new notes commit from the given notes tree + * + * Properties of the created commit: + * - tree: the result of converting t to a tree object with write_notes_tree(). + * - parents: the given parents OR (if NULL) the commit referenced by t->ref. + * - author/committer: the default determined by commmit_tree(). + * - commit message: msg + * + * The resulting commit SHA1 is stored in result_sha1. + */ +void create_notes_commit(struct notes_tree *t, struct commit_list *parents, + const char *msg, unsigned char *result_sha1); + +/* + * Merge notes from o->remote_ref into o->local_ref + * + * The given notes_tree 'local_tree' must be the notes_tree referenced by the + * o->local_ref. This is the notes_tree in which the object-level merge is + * performed. + * + * The commits given by the two refs are merged, producing one of the following + * outcomes: + * + * 1. The merge trivially results in an existing commit (e.g. fast-forward or + * already-up-to-date). 'local_tree' is untouched, the SHA1 of the result + * is written into 'result_sha1' and 0 is returned. + * 2. The merge successfully completes, producing a merge commit. local_tree + * contains the updated notes tree, the SHA1 of the resulting commit is + * written into 'result_sha1', and 1 is returned. + * 3. The merge results in conflicts. This is similar to #2 in that the + * partial merge result (i.e. merge result minus the unmerged entries) + * are stored in 'local_tree', and the SHA1 or the resulting commit + * (to be amended when the conflicts have been resolved) is written into + * 'result_sha1'. The unmerged entries are written into the + * .git/NOTES_MERGE_WORKTREE directory with conflict markers. + * -1 is returned. + * + * Both o->local_ref and o->remote_ref must be given (non-NULL), but either ref + * (although not both) may refer to a non-existing notes ref, in which case + * that notes ref is interpreted as an empty notes tree, and the merge + * trivially results in what the other ref points to. + */ +int notes_merge(struct notes_merge_options *o, + struct notes_tree *local_tree, + unsigned char *result_sha1); + +/* + * Finalize conflict resolution from an earlier notes_merge() + * + * The given notes tree 'partial_tree' must be the notes_tree corresponding to + * the given 'partial_commit', the partial result commit created by a previous + * call to notes_merge(). + * + * This function will add the (now resolved) notes in .git/NOTES_MERGE_WORKTREE + * to 'partial_tree', and create a final notes merge commit, the SHA1 of which + * will be stored in 'result_sha1'. + */ +int notes_merge_commit(struct notes_merge_options *o, + struct notes_tree *partial_tree, + struct commit *partial_commit, + unsigned char *result_sha1); + +/* + * Abort conflict resolution from an earlier notes_merge() + * + * Removes the notes merge worktree in .git/NOTES_MERGE_WORKTREE. + */ +int notes_merge_abort(struct notes_merge_options *o); + +#endif @@ -150,86 +150,6 @@ static struct leaf_node *note_tree_find(struct notes_tree *t, } /* - * To insert a leaf_node: - * Search to the tree location appropriate for the given leaf_node's key: - * - If location is unused (NULL), store the tweaked pointer directly there - * - If location holds a note entry that matches the note-to-be-inserted, then - * combine the two notes (by calling the given combine_notes function). - * - If location holds a note entry that matches the subtree-to-be-inserted, - * then unpack the subtree-to-be-inserted into the location. - * - If location holds a matching subtree entry, unpack the subtree at that - * location, and restart the insert operation from that level. - * - Else, create a new int_node, holding both the node-at-location and the - * node-to-be-inserted, and store the new int_node into the location. - */ -static void note_tree_insert(struct notes_tree *t, struct int_node *tree, - unsigned char n, struct leaf_node *entry, unsigned char type, - combine_notes_fn combine_notes) -{ - struct int_node *new_node; - struct leaf_node *l; - void **p = note_tree_search(t, &tree, &n, entry->key_sha1); - - assert(GET_PTR_TYPE(entry) == 0); /* no type bits set */ - l = (struct leaf_node *) CLR_PTR_TYPE(*p); - switch (GET_PTR_TYPE(*p)) { - case PTR_TYPE_NULL: - assert(!*p); - *p = SET_PTR_TYPE(entry, type); - return; - case PTR_TYPE_NOTE: - switch (type) { - case PTR_TYPE_NOTE: - if (!hashcmp(l->key_sha1, entry->key_sha1)) { - /* skip concatenation if l == entry */ - if (!hashcmp(l->val_sha1, entry->val_sha1)) - return; - - if (combine_notes(l->val_sha1, entry->val_sha1)) - die("failed to combine notes %s and %s" - " for object %s", - sha1_to_hex(l->val_sha1), - sha1_to_hex(entry->val_sha1), - sha1_to_hex(l->key_sha1)); - free(entry); - return; - } - break; - case PTR_TYPE_SUBTREE: - if (!SUBTREE_SHA1_PREFIXCMP(l->key_sha1, - entry->key_sha1)) { - /* unpack 'entry' */ - load_subtree(t, entry, tree, n); - free(entry); - return; - } - break; - } - break; - case PTR_TYPE_SUBTREE: - if (!SUBTREE_SHA1_PREFIXCMP(entry->key_sha1, l->key_sha1)) { - /* unpack 'l' and restart insert */ - *p = NULL; - load_subtree(t, l, tree, n); - free(l); - note_tree_insert(t, tree, n, entry, type, - combine_notes); - return; - } - break; - } - - /* non-matching leaf_node */ - assert(GET_PTR_TYPE(*p) == PTR_TYPE_NOTE || - GET_PTR_TYPE(*p) == PTR_TYPE_SUBTREE); - new_node = (struct int_node *) xcalloc(sizeof(struct int_node), 1); - note_tree_insert(t, new_node, n + 1, l, GET_PTR_TYPE(*p), - combine_notes); - *p = SET_PTR_TYPE(new_node, PTR_TYPE_INTERNAL); - note_tree_insert(t, new_node, n + 1, entry, type, combine_notes); -} - -/* * How to consolidate an int_node: * If there are > 1 non-NULL entries, give up and return non-zero. * Otherwise replace the int_node at the given index in the given parent node @@ -305,6 +225,93 @@ static void note_tree_remove(struct notes_tree *t, i--; } +/* + * To insert a leaf_node: + * Search to the tree location appropriate for the given leaf_node's key: + * - If location is unused (NULL), store the tweaked pointer directly there + * - If location holds a note entry that matches the note-to-be-inserted, then + * combine the two notes (by calling the given combine_notes function). + * - If location holds a note entry that matches the subtree-to-be-inserted, + * then unpack the subtree-to-be-inserted into the location. + * - If location holds a matching subtree entry, unpack the subtree at that + * location, and restart the insert operation from that level. + * - Else, create a new int_node, holding both the node-at-location and the + * node-to-be-inserted, and store the new int_node into the location. + */ +static int note_tree_insert(struct notes_tree *t, struct int_node *tree, + unsigned char n, struct leaf_node *entry, unsigned char type, + combine_notes_fn combine_notes) +{ + struct int_node *new_node; + struct leaf_node *l; + void **p = note_tree_search(t, &tree, &n, entry->key_sha1); + int ret = 0; + + assert(GET_PTR_TYPE(entry) == 0); /* no type bits set */ + l = (struct leaf_node *) CLR_PTR_TYPE(*p); + switch (GET_PTR_TYPE(*p)) { + case PTR_TYPE_NULL: + assert(!*p); + if (is_null_sha1(entry->val_sha1)) + free(entry); + else + *p = SET_PTR_TYPE(entry, type); + return 0; + case PTR_TYPE_NOTE: + switch (type) { + case PTR_TYPE_NOTE: + if (!hashcmp(l->key_sha1, entry->key_sha1)) { + /* skip concatenation if l == entry */ + if (!hashcmp(l->val_sha1, entry->val_sha1)) + return 0; + + ret = combine_notes(l->val_sha1, + entry->val_sha1); + if (!ret && is_null_sha1(l->val_sha1)) + note_tree_remove(t, tree, n, entry); + free(entry); + return ret; + } + break; + case PTR_TYPE_SUBTREE: + if (!SUBTREE_SHA1_PREFIXCMP(l->key_sha1, + entry->key_sha1)) { + /* unpack 'entry' */ + load_subtree(t, entry, tree, n); + free(entry); + return 0; + } + break; + } + break; + case PTR_TYPE_SUBTREE: + if (!SUBTREE_SHA1_PREFIXCMP(entry->key_sha1, l->key_sha1)) { + /* unpack 'l' and restart insert */ + *p = NULL; + load_subtree(t, l, tree, n); + free(l); + return note_tree_insert(t, tree, n, entry, type, + combine_notes); + } + break; + } + + /* non-matching leaf_node */ + assert(GET_PTR_TYPE(*p) == PTR_TYPE_NOTE || + GET_PTR_TYPE(*p) == PTR_TYPE_SUBTREE); + if (is_null_sha1(entry->val_sha1)) { /* skip insertion of empty note */ + free(entry); + return 0; + } + new_node = (struct int_node *) xcalloc(sizeof(struct int_node), 1); + ret = note_tree_insert(t, new_node, n + 1, l, GET_PTR_TYPE(*p), + combine_notes); + if (ret) + return ret; + *p = SET_PTR_TYPE(new_node, PTR_TYPE_INTERNAL); + return note_tree_insert(t, new_node, n + 1, entry, type, combine_notes); +} + /* Free the entire notes data contained in the given tree */ static void note_tree_free(struct int_node *tree) { @@ -445,8 +452,12 @@ static void load_subtree(struct notes_tree *t, struct leaf_node *subtree, l->key_sha1[19] = (unsigned char) len; type = PTR_TYPE_SUBTREE; } - note_tree_insert(t, node, n, l, type, - combine_notes_concatenate); + if (note_tree_insert(t, node, n, l, type, + combine_notes_concatenate)) + die("Failed to load %s %s into notes tree " + "from %s", + type == PTR_TYPE_NOTE ? "note" : "subtree", + sha1_to_hex(l->key_sha1), t->ref); } continue; @@ -804,16 +815,17 @@ int combine_notes_concatenate(unsigned char *cur_sha1, return 0; } - /* we will separate the notes by a newline anyway */ + /* we will separate the notes by two newlines anyway */ if (cur_msg[cur_len - 1] == '\n') cur_len--; /* concatenate cur_msg and new_msg into buf */ - buf_len = cur_len + 1 + new_len; + buf_len = cur_len + 2 + new_len; buf = (char *) xmalloc(buf_len); memcpy(buf, cur_msg, cur_len); buf[cur_len] = '\n'; - memcpy(buf + cur_len + 1, new_msg, new_len); + buf[cur_len + 1] = '\n'; + memcpy(buf + cur_len + 2, new_msg, new_len); free(cur_msg); free(new_msg); @@ -836,6 +848,82 @@ int combine_notes_ignore(unsigned char *cur_sha1, return 0; } +static int string_list_add_note_lines(struct string_list *sort_uniq_list, + const unsigned char *sha1) +{ + char *data; + unsigned long len; + enum object_type t; + struct strbuf buf = STRBUF_INIT; + struct strbuf **lines = NULL; + int i, list_index; + + if (is_null_sha1(sha1)) + return 0; + + /* read_sha1_file NUL-terminates */ + data = read_sha1_file(sha1, &t, &len); + if (t != OBJ_BLOB || !data || !len) { + free(data); + return t != OBJ_BLOB || !data; + } + + strbuf_attach(&buf, data, len, len + 1); + lines = strbuf_split(&buf, '\n'); + + for (i = 0; lines[i]; i++) { + if (lines[i]->buf[lines[i]->len - 1] == '\n') + strbuf_setlen(lines[i], lines[i]->len - 1); + if (!lines[i]->len) + continue; /* skip empty lines */ + list_index = string_list_find_insert_index(sort_uniq_list, + lines[i]->buf, 0); + if (list_index < 0) + continue; /* skip duplicate lines */ + string_list_insert_at_index(sort_uniq_list, list_index, + lines[i]->buf); + } + + strbuf_list_free(lines); + strbuf_release(&buf); + return 0; +} + +static int string_list_join_lines_helper(struct string_list_item *item, + void *cb_data) +{ + struct strbuf *buf = cb_data; + strbuf_addstr(buf, item->string); + strbuf_addch(buf, '\n'); + return 0; +} + +int combine_notes_cat_sort_uniq(unsigned char *cur_sha1, + const unsigned char *new_sha1) +{ + struct string_list sort_uniq_list = { NULL, 0, 0, 1 }; + struct strbuf buf = STRBUF_INIT; + int ret = 1; + + /* read both note blob objects into unique_lines */ + if (string_list_add_note_lines(&sort_uniq_list, cur_sha1)) + goto out; + if (string_list_add_note_lines(&sort_uniq_list, new_sha1)) + goto out; + + /* create a new blob object from sort_uniq_list */ + if (for_each_string_list(&sort_uniq_list, + string_list_join_lines_helper, &buf)) + goto out; + + ret = write_sha1_file(buf.buf, buf.len, blob_type, cur_sha1); + +out: + strbuf_release(&buf); + string_list_clear(&sort_uniq_list, 0); + return ret; +} + static int string_list_add_one_ref(const char *path, const unsigned char *sha1, int flag, void *cb) { @@ -893,7 +981,7 @@ static int notes_display_config(const char *k, const char *v, void *cb) return 0; } -static const char *default_notes_ref(void) +const char *default_notes_ref(void) { const char *notes_ref = NULL; if (!notes_ref) @@ -935,7 +1023,7 @@ void init_notes(struct notes_tree *t, const char *notes_ref, return; if (get_tree_entry(object_sha1, "", sha1, &mode)) die("Failed to read notes tree referenced by %s (%s)", - notes_ref, object_sha1); + notes_ref, sha1_to_hex(object_sha1)); hashclr(root_tree.key_sha1); hashcpy(root_tree.val_sha1, sha1); @@ -989,7 +1077,7 @@ void init_display_notes(struct display_notes_opt *opt) string_list_clear(&display_notes_refs, 0); } -void add_note(struct notes_tree *t, const unsigned char *object_sha1, +int add_note(struct notes_tree *t, const unsigned char *object_sha1, const unsigned char *note_sha1, combine_notes_fn combine_notes) { struct leaf_node *l; @@ -1003,7 +1091,7 @@ void add_note(struct notes_tree *t, const unsigned char *object_sha1, l = (struct leaf_node *) xmalloc(sizeof(struct leaf_node)); hashcpy(l->key_sha1, object_sha1); hashcpy(l->val_sha1, note_sha1); - note_tree_insert(t, t->root, 0, l, PTR_TYPE_NOTE, combine_notes); + return note_tree_insert(t, t->root, 0, l, PTR_TYPE_NOTE, combine_notes); } int remove_note(struct notes_tree *t, const unsigned char *object_sha1) @@ -1182,7 +1270,7 @@ void format_display_notes(const unsigned char *object_sha1, int copy_note(struct notes_tree *t, const unsigned char *from_obj, const unsigned char *to_obj, - int force, combine_notes_fn combine_fn) + int force, combine_notes_fn combine_notes) { const unsigned char *note = get_note(t, from_obj); const unsigned char *existing_note = get_note(t, to_obj); @@ -1191,9 +1279,9 @@ int copy_note(struct notes_tree *t, return 1; if (note) - add_note(t, to_obj, note, combine_fn); + return add_note(t, to_obj, note, combine_notes); else if (existing_note) - add_note(t, to_obj, null_sha1, combine_fn); + return add_note(t, to_obj, null_sha1, combine_notes); return 0; } @@ -12,7 +12,10 @@ * resulting SHA1 into the first SHA1 argument (cur_sha1). A non-zero return * value indicates failure. * - * The two given SHA1s must both be non-NULL and different from each other. + * The two given SHA1s shall both be non-NULL and different from each other. + * Either of them (but not both) may be == null_sha1, which indicates an + * empty/non-existent note. If the resulting SHA1 (cur_sha1) is == null_sha1, + * the note will be removed from the notes tree. * * The default combine_notes function (you get this when passing NULL) is * combine_notes_concatenate(), which appends the contents of the new note to @@ -24,6 +27,7 @@ typedef int (*combine_notes_fn)(unsigned char *cur_sha1, const unsigned char *ne int combine_notes_concatenate(unsigned char *cur_sha1, const unsigned char *new_sha1); int combine_notes_overwrite(unsigned char *cur_sha1, const unsigned char *new_sha1); int combine_notes_ignore(unsigned char *cur_sha1, const unsigned char *new_sha1); +int combine_notes_cat_sort_uniq(unsigned char *cur_sha1, const unsigned char *new_sha1); /* * Notes tree object @@ -44,6 +48,20 @@ extern struct notes_tree { } default_notes_tree; /* + * Return the default notes ref. + * + * The default notes ref is the notes ref that is used when notes_ref == NULL + * is passed to init_notes(). + * + * This the first of the following to be defined: + * 1. The '--ref' option to 'git notes', if given + * 2. The $GIT_NOTES_REF environment variable, if set + * 3. The value of the core.notesRef config variable, if set + * 4. GIT_NOTES_DEFAULT_REF (i.e. "refs/notes/commits") + */ +const char *default_notes_ref(void); + +/* * Flags controlling behaviour of notes tree initialization * * Default behaviour is to initialize the notes tree from the tree object @@ -76,11 +94,24 @@ void init_notes(struct notes_tree *t, const char *notes_ref, /* * Add the given note object to the given notes_tree structure * + * If there already exists a note for the given object_sha1, the given + * combine_notes function is invoked to break the tie. If not given (i.e. + * combine_notes == NULL), the default combine_notes function for the given + * notes_tree is used. + * + * Passing note_sha1 == null_sha1 indicates the addition of an + * empty/non-existent note. This is a (potentially expensive) no-op unless + * there already exists a note for the given object_sha1, AND combining that + * note with the empty note (using the given combine_notes function) results + * in a new/changed note. + * + * Returns zero on success; non-zero means combine_notes failed. + * * IMPORTANT: The changes made by add_note() to the given notes_tree structure * are not persistent until a subsequent call to write_notes_tree() returns * zero. */ -void add_note(struct notes_tree *t, const unsigned char *object_sha1, +int add_note(struct notes_tree *t, const unsigned char *object_sha1, const unsigned char *note_sha1, combine_notes_fn combine_notes); /* @@ -105,11 +136,18 @@ const unsigned char *get_note(struct notes_tree *t, /* * Copy a note from one object to another in the given notes_tree. * - * Fails if the to_obj already has a note unless 'force' is true. + * Returns 1 if the to_obj already has a note and 'force' is false. Otherwise, + * returns non-zero if 'force' is true, but the given combine_notes function + * failed to combine from_obj's note with to_obj's existing note. + * Returns zero on success. + * + * IMPORTANT: The changes made by copy_note() to the given notes_tree structure + * are not persistent until a subsequent call to write_notes_tree() returns + * zero. */ int copy_note(struct notes_tree *t, const unsigned char *from_obj, const unsigned char *to_obj, - int force, combine_notes_fn combine_fn); + int force, combine_notes_fn combine_notes); /* * Flags controlling behaviour of for_each_note() @@ -151,6 +189,7 @@ int copy_note(struct notes_tree *t, * notes tree) from within the callback: * - add_note() * - remove_note() + * - copy_note() * - free_notes() */ typedef int each_note_fn(const unsigned char *object_sha1, diff --git a/t/t3301-notes.sh b/t/t3301-notes.sh index 7e84ab9790..dc2e04a016 100755 --- a/t/t3301-notes.sh +++ b/t/t3301-notes.sh @@ -962,6 +962,7 @@ Date: Thu Apr 7 15:27:13 2005 -0700 Notes (other): a fresh note +$whitespace another fresh note EOF @@ -983,8 +984,11 @@ Date: Thu Apr 7 15:27:13 2005 -0700 Notes (other): a fresh note +$whitespace another fresh note +$whitespace append 1 +$whitespace append 2 EOF @@ -1061,4 +1065,23 @@ test_expect_success 'git notes copy diagnoses too many or too few parameters' ' test_must_fail git notes copy one two three ' +test_expect_success 'git notes get-ref (no overrides)' ' + git config --unset core.notesRef && + unset GIT_NOTES_REF && + test "$(git notes get-ref)" = "refs/notes/commits" +' + +test_expect_success 'git notes get-ref (core.notesRef)' ' + git config core.notesRef refs/notes/foo && + test "$(git notes get-ref)" = "refs/notes/foo" +' + +test_expect_success 'git notes get-ref (GIT_NOTES_REF)' ' + test "$(GIT_NOTES_REF=refs/notes/bar git notes get-ref)" = "refs/notes/bar" +' + +test_expect_success 'git notes get-ref (--ref)' ' + test "$(GIT_NOTES_REF=refs/notes/bar git notes --ref=baz get-ref)" = "refs/notes/baz" +' + test_done diff --git a/t/t3303-notes-subtrees.sh b/t/t3303-notes-subtrees.sh index 75ec18778e..704aee81ef 100755 --- a/t/t3303-notes-subtrees.sh +++ b/t/t3303-notes-subtrees.sh @@ -168,15 +168,16 @@ INPUT_END } verify_concatenated_notes () { - git log | grep "^ " > output && - i=$number_of_commits && - while [ $i -gt 0 ]; do - echo " commit #$i" && - echo " first note for commit #$i" && - echo " second note for commit #$i" && - i=$(($i-1)); - done > expect && - test_cmp expect output + git log | grep "^ " > output && + i=$number_of_commits && + while [ $i -gt 0 ]; do + echo " commit #$i" && + echo " first note for commit #$i" && + echo " " && + echo " second note for commit #$i" && + i=$(($i-1)); + done > expect && + test_cmp expect output } test_expect_success 'test notes in no fanout concatenated with 2/38-fanout' 'test_concatenated_notes "s|^..|&/|" ""' diff --git a/t/t3308-notes-merge.sh b/t/t3308-notes-merge.sh new file mode 100755 index 0000000000..24d82b49bb --- /dev/null +++ b/t/t3308-notes-merge.sh @@ -0,0 +1,368 @@ +#!/bin/sh +# +# Copyright (c) 2010 Johan Herland +# + +test_description='Test merging of notes trees' + +. ./test-lib.sh + +test_expect_success setup ' + test_commit 1st && + test_commit 2nd && + test_commit 3rd && + test_commit 4th && + test_commit 5th && + # Create notes on 4 first commits + git config core.notesRef refs/notes/x && + git notes add -m "Notes on 1st commit" 1st && + git notes add -m "Notes on 2nd commit" 2nd && + git notes add -m "Notes on 3rd commit" 3rd && + git notes add -m "Notes on 4th commit" 4th +' + +commit_sha1=$(git rev-parse 1st^{commit}) +commit_sha2=$(git rev-parse 2nd^{commit}) +commit_sha3=$(git rev-parse 3rd^{commit}) +commit_sha4=$(git rev-parse 4th^{commit}) +commit_sha5=$(git rev-parse 5th^{commit}) + +verify_notes () { + notes_ref="$1" + git -c core.notesRef="refs/notes/$notes_ref" notes | + sort >"output_notes_$notes_ref" && + test_cmp "expect_notes_$notes_ref" "output_notes_$notes_ref" && + git -c core.notesRef="refs/notes/$notes_ref" log --format="%H %s%n%N" \ + >"output_log_$notes_ref" && + test_cmp "expect_log_$notes_ref" "output_log_$notes_ref" +} + +cat <<EOF | sort >expect_notes_x +5e93d24084d32e1cb61f7070505b9d2530cca987 $commit_sha4 +8366731eeee53787d2bdf8fc1eff7d94757e8da0 $commit_sha3 +eede89064cd42441590d6afec6c37b321ada3389 $commit_sha2 +daa55ffad6cb99bf64226532147ffcaf5ce8bdd1 $commit_sha1 +EOF + +cat >expect_log_x <<EOF +$commit_sha5 5th + +$commit_sha4 4th +Notes on 4th commit + +$commit_sha3 3rd +Notes on 3rd commit + +$commit_sha2 2nd +Notes on 2nd commit + +$commit_sha1 1st +Notes on 1st commit + +EOF + +test_expect_success 'verify initial notes (x)' ' + verify_notes x +' + +cp expect_notes_x expect_notes_y +cp expect_log_x expect_log_y + +test_expect_success 'fail to merge empty notes ref into empty notes ref (z => y)' ' + test_must_fail git -c "core.notesRef=refs/notes/y" notes merge z +' + +test_expect_success 'fail to merge into various non-notes refs' ' + test_must_fail git -c "core.notesRef=refs/notes" notes merge x && + test_must_fail git -c "core.notesRef=refs/notes/" notes merge x && + mkdir -p .git/refs/notes/dir && + test_must_fail git -c "core.notesRef=refs/notes/dir" notes merge x && + test_must_fail git -c "core.notesRef=refs/notes/dir/" notes merge x && + test_must_fail git -c "core.notesRef=refs/heads/master" notes merge x && + test_must_fail git -c "core.notesRef=refs/notes/y:" notes merge x && + test_must_fail git -c "core.notesRef=refs/notes/y:foo" notes merge x && + test_must_fail git -c "core.notesRef=refs/notes/foo^{bar" notes merge x +' + +test_expect_success 'fail to merge various non-note-trees' ' + git config core.notesRef refs/notes/y && + test_must_fail git notes merge refs/notes && + test_must_fail git notes merge refs/notes/ && + test_must_fail git notes merge refs/notes/dir && + test_must_fail git notes merge refs/notes/dir/ && + test_must_fail git notes merge refs/heads/master && + test_must_fail git notes merge x: && + test_must_fail git notes merge x:foo && + test_must_fail git notes merge foo^{bar +' + +test_expect_success 'merge notes into empty notes ref (x => y)' ' + git config core.notesRef refs/notes/y && + git notes merge x && + verify_notes y && + # x and y should point to the same notes commit + test "$(git rev-parse refs/notes/x)" = "$(git rev-parse refs/notes/y)" +' + +test_expect_success 'merge empty notes ref (z => y)' ' + git notes merge z && + # y should not change (still == x) + test "$(git rev-parse refs/notes/x)" = "$(git rev-parse refs/notes/y)" +' + +test_expect_success 'change notes on other notes ref (y)' ' + # Not touching notes to 1st commit + git notes remove 2nd && + git notes append -m "More notes on 3rd commit" 3rd && + git notes add -f -m "New notes on 4th commit" 4th && + git notes add -m "Notes on 5th commit" 5th +' + +test_expect_success 'merge previous notes commit (y^ => y) => No-op' ' + pre_state="$(git rev-parse refs/notes/y)" && + git notes merge y^ && + # y should not move + test "$pre_state" = "$(git rev-parse refs/notes/y)" +' + +cat <<EOF | sort >expect_notes_y +0f2efbd00262f2fd41dfae33df8765618eeacd99 $commit_sha5 +dec2502dac3ea161543f71930044deff93fa945c $commit_sha4 +4069cdb399fd45463ec6eef8e051a16a03592d91 $commit_sha3 +daa55ffad6cb99bf64226532147ffcaf5ce8bdd1 $commit_sha1 +EOF + +cat >expect_log_y <<EOF +$commit_sha5 5th +Notes on 5th commit + +$commit_sha4 4th +New notes on 4th commit + +$commit_sha3 3rd +Notes on 3rd commit + +More notes on 3rd commit + +$commit_sha2 2nd + +$commit_sha1 1st +Notes on 1st commit + +EOF + +test_expect_success 'verify changed notes on other notes ref (y)' ' + verify_notes y +' + +test_expect_success 'verify unchanged notes on original notes ref (x)' ' + verify_notes x +' + +test_expect_success 'merge original notes (x) into changed notes (y) => No-op' ' + git notes merge -vvv x && + verify_notes y && + verify_notes x +' + +cp expect_notes_y expect_notes_x +cp expect_log_y expect_log_x + +test_expect_success 'merge changed (y) into original (x) => Fast-forward' ' + git config core.notesRef refs/notes/x && + git notes merge y && + verify_notes x && + verify_notes y && + # x and y should point to same the notes commit + test "$(git rev-parse refs/notes/x)" = "$(git rev-parse refs/notes/y)" +' + +test_expect_success 'merge empty notes ref (z => y)' ' + # Prepare empty (but valid) notes ref (z) + git config core.notesRef refs/notes/z && + git notes add -m "foo" && + git notes remove && + git notes >output_notes_z && + test_cmp /dev/null output_notes_z && + # Do the merge (z => y) + git config core.notesRef refs/notes/y && + git notes merge z && + verify_notes y && + # y should no longer point to the same notes commit as x + test "$(git rev-parse refs/notes/x)" != "$(git rev-parse refs/notes/y)" +' + +cat <<EOF | sort >expect_notes_y +0f2efbd00262f2fd41dfae33df8765618eeacd99 $commit_sha5 +dec2502dac3ea161543f71930044deff93fa945c $commit_sha4 +4069cdb399fd45463ec6eef8e051a16a03592d91 $commit_sha3 +d000d30e6ddcfce3a8122c403226a2ce2fd04d9d $commit_sha2 +43add6bd0c8c0bc871ac7991e0f5573cfba27804 $commit_sha1 +EOF + +cat >expect_log_y <<EOF +$commit_sha5 5th +Notes on 5th commit + +$commit_sha4 4th +New notes on 4th commit + +$commit_sha3 3rd +Notes on 3rd commit + +More notes on 3rd commit + +$commit_sha2 2nd +New notes on 2nd commit + +$commit_sha1 1st +Notes on 1st commit + +More notes on 1st commit + +EOF + +test_expect_success 'change notes on other notes ref (y)' ' + # Append to 1st commit notes + git notes append -m "More notes on 1st commit" 1st && + # Add new notes to 2nd commit + git notes add -m "New notes on 2nd commit" 2nd && + verify_notes y +' + +cat <<EOF | sort >expect_notes_x +0f2efbd00262f2fd41dfae33df8765618eeacd99 $commit_sha5 +1f257a3a90328557c452f0817d6cc50c89d315d4 $commit_sha4 +daa55ffad6cb99bf64226532147ffcaf5ce8bdd1 $commit_sha1 +EOF + +cat >expect_log_x <<EOF +$commit_sha5 5th +Notes on 5th commit + +$commit_sha4 4th +New notes on 4th commit + +More notes on 4th commit + +$commit_sha3 3rd + +$commit_sha2 2nd + +$commit_sha1 1st +Notes on 1st commit + +EOF + +test_expect_success 'change notes on notes ref (x)' ' + git config core.notesRef refs/notes/x && + git notes remove 3rd && + git notes append -m "More notes on 4th commit" 4th && + verify_notes x +' + +cat <<EOF | sort >expect_notes_x +0f2efbd00262f2fd41dfae33df8765618eeacd99 $commit_sha5 +1f257a3a90328557c452f0817d6cc50c89d315d4 $commit_sha4 +d000d30e6ddcfce3a8122c403226a2ce2fd04d9d $commit_sha2 +43add6bd0c8c0bc871ac7991e0f5573cfba27804 $commit_sha1 +EOF + +cat >expect_log_x <<EOF +$commit_sha5 5th +Notes on 5th commit + +$commit_sha4 4th +New notes on 4th commit + +More notes on 4th commit + +$commit_sha3 3rd + +$commit_sha2 2nd +New notes on 2nd commit + +$commit_sha1 1st +Notes on 1st commit + +More notes on 1st commit + +EOF + +test_expect_success 'merge y into x => Non-conflicting 3-way merge' ' + git notes merge y && + verify_notes x && + verify_notes y +' + +cat <<EOF | sort >expect_notes_w +05a4927951bcef347f51486575b878b2b60137f2 $commit_sha3 +d000d30e6ddcfce3a8122c403226a2ce2fd04d9d $commit_sha2 +EOF + +cat >expect_log_w <<EOF +$commit_sha5 5th + +$commit_sha4 4th + +$commit_sha3 3rd +New notes on 3rd commit + +$commit_sha2 2nd +New notes on 2nd commit + +$commit_sha1 1st + +EOF + +test_expect_success 'create notes on new, separate notes ref (w)' ' + git config core.notesRef refs/notes/w && + # Add same note as refs/notes/y on 2nd commit + git notes add -m "New notes on 2nd commit" 2nd && + # Add new note on 3rd commit (non-conflicting) + git notes add -m "New notes on 3rd commit" 3rd && + # Verify state of notes on new, separate notes ref (w) + verify_notes w +' + +cat <<EOF | sort >expect_notes_x +0f2efbd00262f2fd41dfae33df8765618eeacd99 $commit_sha5 +1f257a3a90328557c452f0817d6cc50c89d315d4 $commit_sha4 +05a4927951bcef347f51486575b878b2b60137f2 $commit_sha3 +d000d30e6ddcfce3a8122c403226a2ce2fd04d9d $commit_sha2 +43add6bd0c8c0bc871ac7991e0f5573cfba27804 $commit_sha1 +EOF + +cat >expect_log_x <<EOF +$commit_sha5 5th +Notes on 5th commit + +$commit_sha4 4th +New notes on 4th commit + +More notes on 4th commit + +$commit_sha3 3rd +New notes on 3rd commit + +$commit_sha2 2nd +New notes on 2nd commit + +$commit_sha1 1st +Notes on 1st commit + +More notes on 1st commit + +EOF + +test_expect_success 'merge w into x => Non-conflicting history-less merge' ' + git config core.notesRef refs/notes/x && + git notes merge w && + # Verify new state of notes on other notes ref (x) + verify_notes x && + # Also verify that nothing changed on other notes refs (y and w) + verify_notes y && + verify_notes w +' + +test_done diff --git a/t/t3309-notes-merge-auto-resolve.sh b/t/t3309-notes-merge-auto-resolve.sh new file mode 100755 index 0000000000..461fd84755 --- /dev/null +++ b/t/t3309-notes-merge-auto-resolve.sh @@ -0,0 +1,647 @@ +#!/bin/sh +# +# Copyright (c) 2010 Johan Herland +# + +test_description='Test notes merging with auto-resolving strategies' + +. ./test-lib.sh + +# Set up a notes merge scenario with all kinds of potential conflicts +test_expect_success 'setup commits' ' + test_commit 1st && + test_commit 2nd && + test_commit 3rd && + test_commit 4th && + test_commit 5th && + test_commit 6th && + test_commit 7th && + test_commit 8th && + test_commit 9th && + test_commit 10th && + test_commit 11th && + test_commit 12th && + test_commit 13th && + test_commit 14th && + test_commit 15th +' + +commit_sha1=$(git rev-parse 1st^{commit}) +commit_sha2=$(git rev-parse 2nd^{commit}) +commit_sha3=$(git rev-parse 3rd^{commit}) +commit_sha4=$(git rev-parse 4th^{commit}) +commit_sha5=$(git rev-parse 5th^{commit}) +commit_sha6=$(git rev-parse 6th^{commit}) +commit_sha7=$(git rev-parse 7th^{commit}) +commit_sha8=$(git rev-parse 8th^{commit}) +commit_sha9=$(git rev-parse 9th^{commit}) +commit_sha10=$(git rev-parse 10th^{commit}) +commit_sha11=$(git rev-parse 11th^{commit}) +commit_sha12=$(git rev-parse 12th^{commit}) +commit_sha13=$(git rev-parse 13th^{commit}) +commit_sha14=$(git rev-parse 14th^{commit}) +commit_sha15=$(git rev-parse 15th^{commit}) + +verify_notes () { + notes_ref="$1" + suffix="$2" + git -c core.notesRef="refs/notes/$notes_ref" notes | + sort >"output_notes_$suffix" && + test_cmp "expect_notes_$suffix" "output_notes_$suffix" && + git -c core.notesRef="refs/notes/$notes_ref" log --format="%H %s%n%N" \ + >"output_log_$suffix" && + test_cmp "expect_log_$suffix" "output_log_$suffix" +} + +test_expect_success 'setup merge base (x)' ' + git config core.notesRef refs/notes/x && + git notes add -m "x notes on 6th commit" 6th && + git notes add -m "x notes on 7th commit" 7th && + git notes add -m "x notes on 8th commit" 8th && + git notes add -m "x notes on 9th commit" 9th && + git notes add -m "x notes on 10th commit" 10th && + git notes add -m "x notes on 11th commit" 11th && + git notes add -m "x notes on 12th commit" 12th && + git notes add -m "x notes on 13th commit" 13th && + git notes add -m "x notes on 14th commit" 14th && + git notes add -m "x notes on 15th commit" 15th +' + +cat <<EOF | sort >expect_notes_x +457a85d6c814ea208550f15fcc48f804ac8dc023 $commit_sha15 +b0c95b954301d69da2bc3723f4cb1680d355937c $commit_sha14 +5d30216a129eeffa97d9694ffe8c74317a560315 $commit_sha13 +dd161bc149470fd890dd4ab52a4cbd79bbd18c36 $commit_sha12 +7abbc45126d680336fb24294f013a7cdfa3ed545 $commit_sha11 +b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10 +20c613c835011c48a5abe29170a2402ca6354910 $commit_sha9 +a3daf8a1e4e5dc3409a303ad8481d57bfea7f5d6 $commit_sha8 +897003322b53bc6ca098e9324ee508362347e734 $commit_sha7 +11d97fdebfa5ceee540a3da07bce6fa0222bc082 $commit_sha6 +EOF + +cat >expect_log_x <<EOF +$commit_sha15 15th +x notes on 15th commit + +$commit_sha14 14th +x notes on 14th commit + +$commit_sha13 13th +x notes on 13th commit + +$commit_sha12 12th +x notes on 12th commit + +$commit_sha11 11th +x notes on 11th commit + +$commit_sha10 10th +x notes on 10th commit + +$commit_sha9 9th +x notes on 9th commit + +$commit_sha8 8th +x notes on 8th commit + +$commit_sha7 7th +x notes on 7th commit + +$commit_sha6 6th +x notes on 6th commit + +$commit_sha5 5th + +$commit_sha4 4th + +$commit_sha3 3rd + +$commit_sha2 2nd + +$commit_sha1 1st + +EOF + +test_expect_success 'verify state of merge base (x)' 'verify_notes x x' + +test_expect_success 'setup local branch (y)' ' + git update-ref refs/notes/y refs/notes/x && + git config core.notesRef refs/notes/y && + git notes add -f -m "y notes on 3rd commit" 3rd && + git notes add -f -m "y notes on 4th commit" 4th && + git notes add -f -m "y notes on 5th commit" 5th && + git notes remove 6th && + git notes remove 7th && + git notes remove 8th && + git notes add -f -m "y notes on 12th commit" 12th && + git notes add -f -m "y notes on 13th commit" 13th && + git notes add -f -m "y notes on 14th commit" 14th && + git notes add -f -m "y notes on 15th commit" 15th +' + +cat <<EOF | sort >expect_notes_y +68b8630d25516028bed862719855b3d6768d7833 $commit_sha15 +5de7ea7ad4f47e7ff91989fb82234634730f75df $commit_sha14 +3a631fdb6f41b05b55d8f4baf20728ba8f6fccbc $commit_sha13 +a66055fa82f7a03fe0c02a6aba3287a85abf7c62 $commit_sha12 +7abbc45126d680336fb24294f013a7cdfa3ed545 $commit_sha11 +b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10 +20c613c835011c48a5abe29170a2402ca6354910 $commit_sha9 +154508c7a0bcad82b6fe4b472bc4c26b3bf0825b $commit_sha5 +e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4 +5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3 +EOF + +cat >expect_log_y <<EOF +$commit_sha15 15th +y notes on 15th commit + +$commit_sha14 14th +y notes on 14th commit + +$commit_sha13 13th +y notes on 13th commit + +$commit_sha12 12th +y notes on 12th commit + +$commit_sha11 11th +x notes on 11th commit + +$commit_sha10 10th +x notes on 10th commit + +$commit_sha9 9th +x notes on 9th commit + +$commit_sha8 8th + +$commit_sha7 7th + +$commit_sha6 6th + +$commit_sha5 5th +y notes on 5th commit + +$commit_sha4 4th +y notes on 4th commit + +$commit_sha3 3rd +y notes on 3rd commit + +$commit_sha2 2nd + +$commit_sha1 1st + +EOF + +test_expect_success 'verify state of local branch (y)' 'verify_notes y y' + +test_expect_success 'setup remote branch (z)' ' + git update-ref refs/notes/z refs/notes/x && + git config core.notesRef refs/notes/z && + git notes add -f -m "z notes on 2nd commit" 2nd && + git notes add -f -m "y notes on 4th commit" 4th && + git notes add -f -m "z notes on 5th commit" 5th && + git notes remove 6th && + git notes add -f -m "z notes on 8th commit" 8th && + git notes remove 9th && + git notes add -f -m "z notes on 11th commit" 11th && + git notes remove 12th && + git notes add -f -m "y notes on 14th commit" 14th && + git notes add -f -m "z notes on 15th commit" 15th +' + +cat <<EOF | sort >expect_notes_z +9b4b2c61f0615412da3c10f98ff85b57c04ec765 $commit_sha15 +5de7ea7ad4f47e7ff91989fb82234634730f75df $commit_sha14 +5d30216a129eeffa97d9694ffe8c74317a560315 $commit_sha13 +7e3c53503a3db8dd996cb62e37c66e070b44b54d $commit_sha11 +b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10 +851e1638784a884c7dd26c5d41f3340f6387413a $commit_sha8 +897003322b53bc6ca098e9324ee508362347e734 $commit_sha7 +99fc34adfc400b95c67b013115e37e31aa9a6d23 $commit_sha5 +e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4 +283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2 +EOF + +cat >expect_log_z <<EOF +$commit_sha15 15th +z notes on 15th commit + +$commit_sha14 14th +y notes on 14th commit + +$commit_sha13 13th +x notes on 13th commit + +$commit_sha12 12th + +$commit_sha11 11th +z notes on 11th commit + +$commit_sha10 10th +x notes on 10th commit + +$commit_sha9 9th + +$commit_sha8 8th +z notes on 8th commit + +$commit_sha7 7th +x notes on 7th commit + +$commit_sha6 6th + +$commit_sha5 5th +z notes on 5th commit + +$commit_sha4 4th +y notes on 4th commit + +$commit_sha3 3rd + +$commit_sha2 2nd +z notes on 2nd commit + +$commit_sha1 1st + +EOF + +test_expect_success 'verify state of remote branch (z)' 'verify_notes z z' + +# At this point, before merging z into y, we have the following status: +# +# commit | base/x | local/y | remote/z | diff from x to y/z | result +# -------|---------|---------|----------|----------------------------|------- +# 1st | [none] | [none] | [none] | unchanged / unchanged | [none] +# 2nd | [none] | [none] | 283b482 | unchanged / added | 283b482 +# 3rd | [none] | 5772f42 | [none] | added / unchanged | 5772f42 +# 4th | [none] | e2bfd06 | e2bfd06 | added / added (same) | e2bfd06 +# 5th | [none] | 154508c | 99fc34a | added / added (diff) | ??? +# 6th | 11d97fd | [none] | [none] | removed / removed | [none] +# 7th | 8970033 | [none] | 8970033 | removed / unchanged | [none] +# 8th | a3daf8a | [none] | 851e163 | removed / changed | ??? +# 9th | 20c613c | 20c613c | [none] | unchanged / removed | [none] +# 10th | b8d03e1 | b8d03e1 | b8d03e1 | unchanged / unchanged | b8d03e1 +# 11th | 7abbc45 | 7abbc45 | 7e3c535 | unchanged / changed | 7e3c535 +# 12th | dd161bc | a66055f | [none] | changed / removed | ??? +# 13th | 5d30216 | 3a631fd | 5d30216 | changed / unchanged | 3a631fd +# 14th | b0c95b9 | 5de7ea7 | 5de7ea7 | changed / changed (same) | 5de7ea7 +# 15th | 457a85d | 68b8630 | 9b4b2c6 | changed / changed (diff) | ??? + +test_expect_success 'merge z into y with invalid strategy => Fail/No changes' ' + git config core.notesRef refs/notes/y && + test_must_fail git notes merge --strategy=foo z && + # Verify no changes (y) + verify_notes y y +' + +cat <<EOF | sort >expect_notes_ours +68b8630d25516028bed862719855b3d6768d7833 $commit_sha15 +5de7ea7ad4f47e7ff91989fb82234634730f75df $commit_sha14 +3a631fdb6f41b05b55d8f4baf20728ba8f6fccbc $commit_sha13 +a66055fa82f7a03fe0c02a6aba3287a85abf7c62 $commit_sha12 +7e3c53503a3db8dd996cb62e37c66e070b44b54d $commit_sha11 +b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10 +154508c7a0bcad82b6fe4b472bc4c26b3bf0825b $commit_sha5 +e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4 +5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3 +283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2 +EOF + +cat >expect_log_ours <<EOF +$commit_sha15 15th +y notes on 15th commit + +$commit_sha14 14th +y notes on 14th commit + +$commit_sha13 13th +y notes on 13th commit + +$commit_sha12 12th +y notes on 12th commit + +$commit_sha11 11th +z notes on 11th commit + +$commit_sha10 10th +x notes on 10th commit + +$commit_sha9 9th + +$commit_sha8 8th + +$commit_sha7 7th + +$commit_sha6 6th + +$commit_sha5 5th +y notes on 5th commit + +$commit_sha4 4th +y notes on 4th commit + +$commit_sha3 3rd +y notes on 3rd commit + +$commit_sha2 2nd +z notes on 2nd commit + +$commit_sha1 1st + +EOF + +test_expect_success 'merge z into y with "ours" strategy => Non-conflicting 3-way merge' ' + git notes merge --strategy=ours z && + verify_notes y ours +' + +test_expect_success 'reset to pre-merge state (y)' ' + git update-ref refs/notes/y refs/notes/y^1 && + # Verify pre-merge state + verify_notes y y +' + +cat <<EOF | sort >expect_notes_theirs +9b4b2c61f0615412da3c10f98ff85b57c04ec765 $commit_sha15 +5de7ea7ad4f47e7ff91989fb82234634730f75df $commit_sha14 +3a631fdb6f41b05b55d8f4baf20728ba8f6fccbc $commit_sha13 +7e3c53503a3db8dd996cb62e37c66e070b44b54d $commit_sha11 +b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10 +851e1638784a884c7dd26c5d41f3340f6387413a $commit_sha8 +99fc34adfc400b95c67b013115e37e31aa9a6d23 $commit_sha5 +e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4 +5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3 +283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2 +EOF + +cat >expect_log_theirs <<EOF +$commit_sha15 15th +z notes on 15th commit + +$commit_sha14 14th +y notes on 14th commit + +$commit_sha13 13th +y notes on 13th commit + +$commit_sha12 12th + +$commit_sha11 11th +z notes on 11th commit + +$commit_sha10 10th +x notes on 10th commit + +$commit_sha9 9th + +$commit_sha8 8th +z notes on 8th commit + +$commit_sha7 7th + +$commit_sha6 6th + +$commit_sha5 5th +z notes on 5th commit + +$commit_sha4 4th +y notes on 4th commit + +$commit_sha3 3rd +y notes on 3rd commit + +$commit_sha2 2nd +z notes on 2nd commit + +$commit_sha1 1st + +EOF + +test_expect_success 'merge z into y with "theirs" strategy => Non-conflicting 3-way merge' ' + git notes merge --strategy=theirs z && + verify_notes y theirs +' + +test_expect_success 'reset to pre-merge state (y)' ' + git update-ref refs/notes/y refs/notes/y^1 && + # Verify pre-merge state + verify_notes y y +' + +cat <<EOF | sort >expect_notes_union +7c4e546efd0fe939f876beb262ece02797880b54 $commit_sha15 +5de7ea7ad4f47e7ff91989fb82234634730f75df $commit_sha14 +3a631fdb6f41b05b55d8f4baf20728ba8f6fccbc $commit_sha13 +a66055fa82f7a03fe0c02a6aba3287a85abf7c62 $commit_sha12 +7e3c53503a3db8dd996cb62e37c66e070b44b54d $commit_sha11 +b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10 +851e1638784a884c7dd26c5d41f3340f6387413a $commit_sha8 +6c841cc36ea496027290967ca96bd2bef54dbb47 $commit_sha5 +e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4 +5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3 +283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2 +EOF + +cat >expect_log_union <<EOF +$commit_sha15 15th +y notes on 15th commit + +z notes on 15th commit + +$commit_sha14 14th +y notes on 14th commit + +$commit_sha13 13th +y notes on 13th commit + +$commit_sha12 12th +y notes on 12th commit + +$commit_sha11 11th +z notes on 11th commit + +$commit_sha10 10th +x notes on 10th commit + +$commit_sha9 9th + +$commit_sha8 8th +z notes on 8th commit + +$commit_sha7 7th + +$commit_sha6 6th + +$commit_sha5 5th +y notes on 5th commit + +z notes on 5th commit + +$commit_sha4 4th +y notes on 4th commit + +$commit_sha3 3rd +y notes on 3rd commit + +$commit_sha2 2nd +z notes on 2nd commit + +$commit_sha1 1st + +EOF + +test_expect_success 'merge z into y with "union" strategy => Non-conflicting 3-way merge' ' + git notes merge --strategy=union z && + verify_notes y union +' + +test_expect_success 'reset to pre-merge state (y)' ' + git update-ref refs/notes/y refs/notes/y^1 && + # Verify pre-merge state + verify_notes y y +' + +cat <<EOF | sort >expect_notes_union2 +d682107b8bf7a7aea1e537a8d5cb6a12b60135f1 $commit_sha15 +5de7ea7ad4f47e7ff91989fb82234634730f75df $commit_sha14 +3a631fdb6f41b05b55d8f4baf20728ba8f6fccbc $commit_sha13 +a66055fa82f7a03fe0c02a6aba3287a85abf7c62 $commit_sha12 +7e3c53503a3db8dd996cb62e37c66e070b44b54d $commit_sha11 +b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10 +851e1638784a884c7dd26c5d41f3340f6387413a $commit_sha8 +357b6ca14c7afd59b7f8b8aaaa6b8b723771135b $commit_sha5 +e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4 +5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3 +283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2 +EOF + +cat >expect_log_union2 <<EOF +$commit_sha15 15th +z notes on 15th commit + +y notes on 15th commit + +$commit_sha14 14th +y notes on 14th commit + +$commit_sha13 13th +y notes on 13th commit + +$commit_sha12 12th +y notes on 12th commit + +$commit_sha11 11th +z notes on 11th commit + +$commit_sha10 10th +x notes on 10th commit + +$commit_sha9 9th + +$commit_sha8 8th +z notes on 8th commit + +$commit_sha7 7th + +$commit_sha6 6th + +$commit_sha5 5th +z notes on 5th commit + +y notes on 5th commit + +$commit_sha4 4th +y notes on 4th commit + +$commit_sha3 3rd +y notes on 3rd commit + +$commit_sha2 2nd +z notes on 2nd commit + +$commit_sha1 1st + +EOF + +test_expect_success 'merge y into z with "union" strategy => Non-conflicting 3-way merge' ' + git config core.notesRef refs/notes/z && + git notes merge --strategy=union y && + verify_notes z union2 +' + +test_expect_success 'reset to pre-merge state (z)' ' + git update-ref refs/notes/z refs/notes/z^1 && + # Verify pre-merge state + verify_notes z z +' + +cat <<EOF | sort >expect_notes_cat_sort_uniq +6be90240b5f54594203e25d9f2f64b7567175aee $commit_sha15 +5de7ea7ad4f47e7ff91989fb82234634730f75df $commit_sha14 +3a631fdb6f41b05b55d8f4baf20728ba8f6fccbc $commit_sha13 +a66055fa82f7a03fe0c02a6aba3287a85abf7c62 $commit_sha12 +7e3c53503a3db8dd996cb62e37c66e070b44b54d $commit_sha11 +b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10 +851e1638784a884c7dd26c5d41f3340f6387413a $commit_sha8 +660311d7f78dc53db12ac373a43fca7465381a7e $commit_sha5 +e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4 +5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3 +283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2 +EOF + +cat >expect_log_cat_sort_uniq <<EOF +$commit_sha15 15th +y notes on 15th commit +z notes on 15th commit + +$commit_sha14 14th +y notes on 14th commit + +$commit_sha13 13th +y notes on 13th commit + +$commit_sha12 12th +y notes on 12th commit + +$commit_sha11 11th +z notes on 11th commit + +$commit_sha10 10th +x notes on 10th commit + +$commit_sha9 9th + +$commit_sha8 8th +z notes on 8th commit + +$commit_sha7 7th + +$commit_sha6 6th + +$commit_sha5 5th +y notes on 5th commit +z notes on 5th commit + +$commit_sha4 4th +y notes on 4th commit + +$commit_sha3 3rd +y notes on 3rd commit + +$commit_sha2 2nd +z notes on 2nd commit + +$commit_sha1 1st + +EOF + +test_expect_success 'merge y into z with "cat_sort_uniq" strategy => Non-conflicting 3-way merge' ' + git notes merge --strategy=cat_sort_uniq y && + verify_notes z cat_sort_uniq +' + +test_done diff --git a/t/t3310-notes-merge-manual-resolve.sh b/t/t3310-notes-merge-manual-resolve.sh new file mode 100755 index 0000000000..4ec4d11450 --- /dev/null +++ b/t/t3310-notes-merge-manual-resolve.sh @@ -0,0 +1,556 @@ +#!/bin/sh +# +# Copyright (c) 2010 Johan Herland +# + +test_description='Test notes merging with manual conflict resolution' + +. ./test-lib.sh + +# Set up a notes merge scenario with different kinds of conflicts +test_expect_success 'setup commits' ' + test_commit 1st && + test_commit 2nd && + test_commit 3rd && + test_commit 4th && + test_commit 5th +' + +commit_sha1=$(git rev-parse 1st^{commit}) +commit_sha2=$(git rev-parse 2nd^{commit}) +commit_sha3=$(git rev-parse 3rd^{commit}) +commit_sha4=$(git rev-parse 4th^{commit}) +commit_sha5=$(git rev-parse 5th^{commit}) + +verify_notes () { + notes_ref="$1" + git -c core.notesRef="refs/notes/$notes_ref" notes | + sort >"output_notes_$notes_ref" && + test_cmp "expect_notes_$notes_ref" "output_notes_$notes_ref" && + git -c core.notesRef="refs/notes/$notes_ref" log --format="%H %s%n%N" \ + >"output_log_$notes_ref" && + test_cmp "expect_log_$notes_ref" "output_log_$notes_ref" +} + +cat <<EOF | sort >expect_notes_x +6e8e3febca3c2bb896704335cc4d0c34cb2f8715 $commit_sha4 +e5388c10860456ee60673025345fe2e153eb8cf8 $commit_sha3 +ceefa674873670e7ecd131814d909723cce2b669 $commit_sha2 +EOF + +cat >expect_log_x <<EOF +$commit_sha5 5th + +$commit_sha4 4th +x notes on 4th commit + +$commit_sha3 3rd +x notes on 3rd commit + +$commit_sha2 2nd +x notes on 2nd commit + +$commit_sha1 1st + +EOF + +test_expect_success 'setup merge base (x)' ' + git config core.notesRef refs/notes/x && + git notes add -m "x notes on 2nd commit" 2nd && + git notes add -m "x notes on 3rd commit" 3rd && + git notes add -m "x notes on 4th commit" 4th && + verify_notes x +' + +cat <<EOF | sort >expect_notes_y +e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4 +5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3 +b0a6021ec006d07e80e9b20ec9b444cbd9d560d3 $commit_sha1 +EOF + +cat >expect_log_y <<EOF +$commit_sha5 5th + +$commit_sha4 4th +y notes on 4th commit + +$commit_sha3 3rd +y notes on 3rd commit + +$commit_sha2 2nd + +$commit_sha1 1st +y notes on 1st commit + +EOF + +test_expect_success 'setup local branch (y)' ' + git update-ref refs/notes/y refs/notes/x && + git config core.notesRef refs/notes/y && + git notes add -f -m "y notes on 1st commit" 1st && + git notes remove 2nd && + git notes add -f -m "y notes on 3rd commit" 3rd && + git notes add -f -m "y notes on 4th commit" 4th && + verify_notes y +' + +cat <<EOF | sort >expect_notes_z +cff59c793c20bb49a4e01bc06fb06bad642e0d54 $commit_sha4 +283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2 +0a81da8956346e19bcb27a906f04af327e03e31b $commit_sha1 +EOF + +cat >expect_log_z <<EOF +$commit_sha5 5th + +$commit_sha4 4th +z notes on 4th commit + +$commit_sha3 3rd + +$commit_sha2 2nd +z notes on 2nd commit + +$commit_sha1 1st +z notes on 1st commit + +EOF + +test_expect_success 'setup remote branch (z)' ' + git update-ref refs/notes/z refs/notes/x && + git config core.notesRef refs/notes/z && + git notes add -f -m "z notes on 1st commit" 1st && + git notes add -f -m "z notes on 2nd commit" 2nd && + git notes remove 3rd && + git notes add -f -m "z notes on 4th commit" 4th && + verify_notes z +' + +# At this point, before merging z into y, we have the following status: +# +# commit | base/x | local/y | remote/z | diff from x to y/z +# -------|---------|---------|----------|--------------------------- +# 1st | [none] | b0a6021 | 0a81da8 | added / added (diff) +# 2nd | ceefa67 | [none] | 283b482 | removed / changed +# 3rd | e5388c1 | 5772f42 | [none] | changed / removed +# 4th | 6e8e3fe | e2bfd06 | cff59c7 | changed / changed (diff) +# 5th | [none] | [none] | [none] | [none] + +cat <<EOF | sort >expect_conflicts +$commit_sha1 +$commit_sha2 +$commit_sha3 +$commit_sha4 +EOF + +cat >expect_conflict_$commit_sha1 <<EOF +<<<<<<< refs/notes/m +y notes on 1st commit +======= +z notes on 1st commit +>>>>>>> refs/notes/z +EOF + +cat >expect_conflict_$commit_sha2 <<EOF +z notes on 2nd commit +EOF + +cat >expect_conflict_$commit_sha3 <<EOF +y notes on 3rd commit +EOF + +cat >expect_conflict_$commit_sha4 <<EOF +<<<<<<< refs/notes/m +y notes on 4th commit +======= +z notes on 4th commit +>>>>>>> refs/notes/z +EOF + +cp expect_notes_y expect_notes_m +cp expect_log_y expect_log_m + +git rev-parse refs/notes/y > pre_merge_y +git rev-parse refs/notes/z > pre_merge_z + +test_expect_success 'merge z into m (== y) with default ("manual") resolver => Conflicting 3-way merge' ' + git update-ref refs/notes/m refs/notes/y && + git config core.notesRef refs/notes/m && + test_must_fail git notes merge z >output && + # Output should point to where to resolve conflicts + grep -q "\\.git/NOTES_MERGE_WORKTREE" output && + # Inspect merge conflicts + ls .git/NOTES_MERGE_WORKTREE >output_conflicts && + test_cmp expect_conflicts output_conflicts && + ( for f in $(cat expect_conflicts); do + test_cmp "expect_conflict_$f" ".git/NOTES_MERGE_WORKTREE/$f" || + exit 1 + done ) && + # Verify that current notes tree (pre-merge) has not changed (m == y) + verify_notes y && + verify_notes m && + test "$(git rev-parse refs/notes/m)" = "$(cat pre_merge_y)" +' + +cat <<EOF | sort >expect_notes_z +00494adecf2d9635a02fa431308d67993f853968 $commit_sha4 +283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2 +0a81da8956346e19bcb27a906f04af327e03e31b $commit_sha1 +EOF + +cat >expect_log_z <<EOF +$commit_sha5 5th + +$commit_sha4 4th +z notes on 4th commit + +More z notes on 4th commit + +$commit_sha3 3rd + +$commit_sha2 2nd +z notes on 2nd commit + +$commit_sha1 1st +z notes on 1st commit + +EOF + +test_expect_success 'change notes in z' ' + git notes --ref z append -m "More z notes on 4th commit" 4th && + verify_notes z +' + +test_expect_success 'cannot do merge w/conflicts when previous merge is unfinished' ' + test -d .git/NOTES_MERGE_WORKTREE && + test_must_fail git notes merge z >output 2>&1 && + # Output should indicate what is wrong + grep -q "\\.git/NOTES_MERGE_\\* exists" output +' + +# Setup non-conflicting merge between x and new notes ref w + +cat <<EOF | sort >expect_notes_w +ceefa674873670e7ecd131814d909723cce2b669 $commit_sha2 +f75d1df88cbfe4258d49852f26cfc83f2ad4494b $commit_sha1 +EOF + +cat >expect_log_w <<EOF +$commit_sha5 5th + +$commit_sha4 4th + +$commit_sha3 3rd + +$commit_sha2 2nd +x notes on 2nd commit + +$commit_sha1 1st +w notes on 1st commit + +EOF + +test_expect_success 'setup unrelated notes ref (w)' ' + git config core.notesRef refs/notes/w && + git notes add -m "w notes on 1st commit" 1st && + git notes add -m "x notes on 2nd commit" 2nd && + verify_notes w +' + +cat <<EOF | sort >expect_notes_w +6e8e3febca3c2bb896704335cc4d0c34cb2f8715 $commit_sha4 +e5388c10860456ee60673025345fe2e153eb8cf8 $commit_sha3 +ceefa674873670e7ecd131814d909723cce2b669 $commit_sha2 +f75d1df88cbfe4258d49852f26cfc83f2ad4494b $commit_sha1 +EOF + +cat >expect_log_w <<EOF +$commit_sha5 5th + +$commit_sha4 4th +x notes on 4th commit + +$commit_sha3 3rd +x notes on 3rd commit + +$commit_sha2 2nd +x notes on 2nd commit + +$commit_sha1 1st +w notes on 1st commit + +EOF + +test_expect_success 'can do merge without conflicts even if previous merge is unfinished (x => w)' ' + test -d .git/NOTES_MERGE_WORKTREE && + git notes merge x && + verify_notes w && + # Verify that other notes refs has not changed (x and y) + verify_notes x && + verify_notes y +' + +cat <<EOF | sort >expect_notes_m +021faa20e931fb48986ffc6282b4bb05553ac946 $commit_sha4 +5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3 +283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2 +0a59e787e6d688aa6309e56e8c1b89431a0fc1c1 $commit_sha1 +EOF + +cat >expect_log_m <<EOF +$commit_sha5 5th + +$commit_sha4 4th +y and z notes on 4th commit + +$commit_sha3 3rd +y notes on 3rd commit + +$commit_sha2 2nd +z notes on 2nd commit + +$commit_sha1 1st +y and z notes on 1st commit + +EOF + +test_expect_success 'finalize conflicting merge (z => m)' ' + # Resolve conflicts and finalize merge + cat >.git/NOTES_MERGE_WORKTREE/$commit_sha1 <<EOF && +y and z notes on 1st commit +EOF + cat >.git/NOTES_MERGE_WORKTREE/$commit_sha4 <<EOF && +y and z notes on 4th commit +EOF + git notes merge --commit && + # No .git/NOTES_MERGE_* files left + test_must_fail ls .git/NOTES_MERGE_* >output 2>/dev/null && + test_cmp /dev/null output && + # Merge commit has pre-merge y and pre-merge z as parents + test "$(git rev-parse refs/notes/m^1)" = "$(cat pre_merge_y)" && + test "$(git rev-parse refs/notes/m^2)" = "$(cat pre_merge_z)" && + # Merge commit mentions the notes refs merged + git log -1 --format=%B refs/notes/m > merge_commit_msg && + grep -q refs/notes/m merge_commit_msg && + grep -q refs/notes/z merge_commit_msg && + # Merge commit mentions conflicting notes + grep -q "Conflicts" merge_commit_msg && + ( for sha1 in $(cat expect_conflicts); do + grep -q "$sha1" merge_commit_msg || + exit 1 + done ) && + # Verify contents of merge result + verify_notes m && + # Verify that other notes refs has not changed (w, x, y and z) + verify_notes w && + verify_notes x && + verify_notes y && + verify_notes z +' + +cat >expect_conflict_$commit_sha4 <<EOF +<<<<<<< refs/notes/m +y notes on 4th commit +======= +z notes on 4th commit + +More z notes on 4th commit +>>>>>>> refs/notes/z +EOF + +cp expect_notes_y expect_notes_m +cp expect_log_y expect_log_m + +git rev-parse refs/notes/y > pre_merge_y +git rev-parse refs/notes/z > pre_merge_z + +test_expect_success 'redo merge of z into m (== y) with default ("manual") resolver => Conflicting 3-way merge' ' + git update-ref refs/notes/m refs/notes/y && + git config core.notesRef refs/notes/m && + test_must_fail git notes merge z >output && + # Output should point to where to resolve conflicts + grep -q "\\.git/NOTES_MERGE_WORKTREE" output && + # Inspect merge conflicts + ls .git/NOTES_MERGE_WORKTREE >output_conflicts && + test_cmp expect_conflicts output_conflicts && + ( for f in $(cat expect_conflicts); do + test_cmp "expect_conflict_$f" ".git/NOTES_MERGE_WORKTREE/$f" || + exit 1 + done ) && + # Verify that current notes tree (pre-merge) has not changed (m == y) + verify_notes y && + verify_notes m && + test "$(git rev-parse refs/notes/m)" = "$(cat pre_merge_y)" +' + +test_expect_success 'abort notes merge' ' + git notes merge --abort && + # No .git/NOTES_MERGE_* files left + test_must_fail ls .git/NOTES_MERGE_* >output 2>/dev/null && + test_cmp /dev/null output && + # m has not moved (still == y) + test "$(git rev-parse refs/notes/m)" = "$(cat pre_merge_y)" + # Verify that other notes refs has not changed (w, x, y and z) + verify_notes w && + verify_notes x && + verify_notes y && + verify_notes z +' + +git rev-parse refs/notes/y > pre_merge_y +git rev-parse refs/notes/z > pre_merge_z + +test_expect_success 'redo merge of z into m (== y) with default ("manual") resolver => Conflicting 3-way merge' ' + test_must_fail git notes merge z >output && + # Output should point to where to resolve conflicts + grep -q "\\.git/NOTES_MERGE_WORKTREE" output && + # Inspect merge conflicts + ls .git/NOTES_MERGE_WORKTREE >output_conflicts && + test_cmp expect_conflicts output_conflicts && + ( for f in $(cat expect_conflicts); do + test_cmp "expect_conflict_$f" ".git/NOTES_MERGE_WORKTREE/$f" || + exit 1 + done ) && + # Verify that current notes tree (pre-merge) has not changed (m == y) + verify_notes y && + verify_notes m && + test "$(git rev-parse refs/notes/m)" = "$(cat pre_merge_y)" +' + +cat <<EOF | sort >expect_notes_m +304dfb4325cf243025b9957486eb605a9b51c199 $commit_sha5 +283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2 +0a59e787e6d688aa6309e56e8c1b89431a0fc1c1 $commit_sha1 +EOF + +cat >expect_log_m <<EOF +$commit_sha5 5th +new note on 5th commit + +$commit_sha4 4th + +$commit_sha3 3rd + +$commit_sha2 2nd +z notes on 2nd commit + +$commit_sha1 1st +y and z notes on 1st commit + +EOF + +test_expect_success 'add + remove notes in finalized merge (z => m)' ' + # Resolve one conflict + cat >.git/NOTES_MERGE_WORKTREE/$commit_sha1 <<EOF && +y and z notes on 1st commit +EOF + # Remove another conflict + rm .git/NOTES_MERGE_WORKTREE/$commit_sha4 && + # Remove a D/F conflict + rm .git/NOTES_MERGE_WORKTREE/$commit_sha3 && + # Add a new note + echo "new note on 5th commit" > .git/NOTES_MERGE_WORKTREE/$commit_sha5 && + # Finalize merge + git notes merge --commit && + # No .git/NOTES_MERGE_* files left + test_must_fail ls .git/NOTES_MERGE_* >output 2>/dev/null && + test_cmp /dev/null output && + # Merge commit has pre-merge y and pre-merge z as parents + test "$(git rev-parse refs/notes/m^1)" = "$(cat pre_merge_y)" && + test "$(git rev-parse refs/notes/m^2)" = "$(cat pre_merge_z)" && + # Merge commit mentions the notes refs merged + git log -1 --format=%B refs/notes/m > merge_commit_msg && + grep -q refs/notes/m merge_commit_msg && + grep -q refs/notes/z merge_commit_msg && + # Merge commit mentions conflicting notes + grep -q "Conflicts" merge_commit_msg && + ( for sha1 in $(cat expect_conflicts); do + grep -q "$sha1" merge_commit_msg || + exit 1 + done ) && + # Verify contents of merge result + verify_notes m && + # Verify that other notes refs has not changed (w, x, y and z) + verify_notes w && + verify_notes x && + verify_notes y && + verify_notes z +' + +cp expect_notes_y expect_notes_m +cp expect_log_y expect_log_m + +test_expect_success 'redo merge of z into m (== y) with default ("manual") resolver => Conflicting 3-way merge' ' + git update-ref refs/notes/m refs/notes/y && + test_must_fail git notes merge z >output && + # Output should point to where to resolve conflicts + grep -q "\\.git/NOTES_MERGE_WORKTREE" output && + # Inspect merge conflicts + ls .git/NOTES_MERGE_WORKTREE >output_conflicts && + test_cmp expect_conflicts output_conflicts && + ( for f in $(cat expect_conflicts); do + test_cmp "expect_conflict_$f" ".git/NOTES_MERGE_WORKTREE/$f" || + exit 1 + done ) && + # Verify that current notes tree (pre-merge) has not changed (m == y) + verify_notes y && + verify_notes m && + test "$(git rev-parse refs/notes/m)" = "$(cat pre_merge_y)" +' + +cp expect_notes_w expect_notes_m +cp expect_log_w expect_log_m + +test_expect_success 'reset notes ref m to somewhere else (w)' ' + git update-ref refs/notes/m refs/notes/w && + verify_notes m && + test "$(git rev-parse refs/notes/m)" = "$(git rev-parse refs/notes/w)" +' + +test_expect_success 'fail to finalize conflicting merge if underlying ref has moved in the meantime (m != NOTES_MERGE_PARTIAL^1)' ' + # Resolve conflicts + cat >.git/NOTES_MERGE_WORKTREE/$commit_sha1 <<EOF && +y and z notes on 1st commit +EOF + cat >.git/NOTES_MERGE_WORKTREE/$commit_sha4 <<EOF && +y and z notes on 4th commit +EOF + # Fail to finalize merge + test_must_fail git notes merge --commit >output 2>&1 && + # .git/NOTES_MERGE_* must remain + test -f .git/NOTES_MERGE_PARTIAL && + test -f .git/NOTES_MERGE_REF && + test -f .git/NOTES_MERGE_WORKTREE/$commit_sha1 && + test -f .git/NOTES_MERGE_WORKTREE/$commit_sha2 && + test -f .git/NOTES_MERGE_WORKTREE/$commit_sha3 && + test -f .git/NOTES_MERGE_WORKTREE/$commit_sha4 && + # Refs are unchanged + test "$(git rev-parse refs/notes/m)" = "$(git rev-parse refs/notes/w)" + test "$(git rev-parse refs/notes/y)" = "$(git rev-parse NOTES_MERGE_PARTIAL^1)" + test "$(git rev-parse refs/notes/m)" != "$(git rev-parse NOTES_MERGE_PARTIAL^1)" + # Mention refs/notes/m, and its current and expected value in output + grep -q "refs/notes/m" output && + grep -q "$(git rev-parse refs/notes/m)" output && + grep -q "$(git rev-parse NOTES_MERGE_PARTIAL^1)" output && + # Verify that other notes refs has not changed (w, x, y and z) + verify_notes w && + verify_notes x && + verify_notes y && + verify_notes z +' + +test_expect_success 'resolve situation by aborting the notes merge' ' + git notes merge --abort && + # No .git/NOTES_MERGE_* files left + test_must_fail ls .git/NOTES_MERGE_* >output 2>/dev/null && + test_cmp /dev/null output && + # m has not moved (still == w) + test "$(git rev-parse refs/notes/m)" = "$(git rev-parse refs/notes/w)" + # Verify that other notes refs has not changed (w, x, y and z) + verify_notes w && + verify_notes x && + verify_notes y && + verify_notes z +' + +test_done diff --git a/t/t3311-notes-merge-fanout.sh b/t/t3311-notes-merge-fanout.sh new file mode 100755 index 0000000000..93516ef67c --- /dev/null +++ b/t/t3311-notes-merge-fanout.sh @@ -0,0 +1,436 @@ +#!/bin/sh +# +# Copyright (c) 2010 Johan Herland +# + +test_description='Test notes merging at various fanout levels' + +. ./test-lib.sh + +verify_notes () { + notes_ref="$1" + commit="$2" + if test -f "expect_notes_$notes_ref" + then + git -c core.notesRef="refs/notes/$notes_ref" notes | + sort >"output_notes_$notes_ref" && + test_cmp "expect_notes_$notes_ref" "output_notes_$notes_ref" || + return 1 + fi && + git -c core.notesRef="refs/notes/$notes_ref" log --format="%H %s%n%N" \ + "$commit" >"output_log_$notes_ref" && + test_cmp "expect_log_$notes_ref" "output_log_$notes_ref" +} + +verify_fanout () { + notes_ref="$1" + # Expect entire notes tree to have a fanout == 1 + git rev-parse --quiet --verify "refs/notes/$notes_ref" >/dev/null && + git ls-tree -r --name-only "refs/notes/$notes_ref" | + while read path + do + case "$path" in + ??/??????????????????????????????????????) + : true + ;; + *) + echo "Invalid path \"$path\"" && + return 1 + ;; + esac + done +} + +verify_no_fanout () { + notes_ref="$1" + # Expect entire notes tree to have a fanout == 0 + git rev-parse --quiet --verify "refs/notes/$notes_ref" >/dev/null && + git ls-tree -r --name-only "refs/notes/$notes_ref" | + while read path + do + case "$path" in + ????????????????????????????????????????) + : true + ;; + *) + echo "Invalid path \"$path\"" && + return 1 + ;; + esac + done +} + +# Set up a notes merge scenario with different kinds of conflicts +test_expect_success 'setup a few initial commits with notes (notes ref: x)' ' + git config core.notesRef refs/notes/x && + for i in 1 2 3 4 5 + do + test_commit "commit$i" >/dev/null && + git notes add -m "notes for commit$i" || return 1 + done +' + +commit_sha1=$(git rev-parse commit1^{commit}) +commit_sha2=$(git rev-parse commit2^{commit}) +commit_sha3=$(git rev-parse commit3^{commit}) +commit_sha4=$(git rev-parse commit4^{commit}) +commit_sha5=$(git rev-parse commit5^{commit}) + +cat <<EOF | sort >expect_notes_x +aed91155c7a72c2188e781fdf40e0f3761b299db $commit_sha5 +99fab268f9d7ee7b011e091a436c78def8eeee69 $commit_sha4 +953c20ae26c7aa0b428c20693fe38bc687f9d1a9 $commit_sha3 +6358796131b8916eaa2dde6902642942a1cb37e1 $commit_sha2 +b02d459c32f0e68f2fe0981033bb34f38776ba47 $commit_sha1 +EOF + +cat >expect_log_x <<EOF +$commit_sha5 commit5 +notes for commit5 + +$commit_sha4 commit4 +notes for commit4 + +$commit_sha3 commit3 +notes for commit3 + +$commit_sha2 commit2 +notes for commit2 + +$commit_sha1 commit1 +notes for commit1 + +EOF + +test_expect_success 'sanity check (x)' ' + verify_notes x commit5 && + verify_no_fanout x +' + +num=300 + +cp expect_log_x expect_log_y + +test_expect_success 'Add a few hundred commits w/notes to trigger fanout (x -> y)' ' + git update-ref refs/notes/y refs/notes/x && + git config core.notesRef refs/notes/y && + i=5 && + while test $i -lt $num + do + i=$(($i + 1)) && + test_commit "commit$i" >/dev/null && + git notes add -m "notes for commit$i" || return 1 + done && + test "$(git rev-parse refs/notes/y)" != "$(git rev-parse refs/notes/x)" && + # Expected number of commits and notes + test $(git rev-list HEAD | wc -l) = $num && + test $(git notes list | wc -l) = $num && + # 5 first notes unchanged + verify_notes y commit5 +' + +test_expect_success 'notes tree has fanout (y)' 'verify_fanout y' + +test_expect_success 'No-op merge (already included) (x => y)' ' + git update-ref refs/notes/m refs/notes/y && + git config core.notesRef refs/notes/m && + git notes merge x && + test "$(git rev-parse refs/notes/m)" = "$(git rev-parse refs/notes/y)" +' + +test_expect_success 'Fast-forward merge (y => x)' ' + git update-ref refs/notes/m refs/notes/x && + git notes merge y && + test "$(git rev-parse refs/notes/m)" = "$(git rev-parse refs/notes/y)" +' + +cat <<EOF | sort >expect_notes_z +9f506ee70e20379d7f78204c77b334f43d77410d $commit_sha3 +23a47d6ea7d589895faf800752054818e1e7627b $commit_sha2 +b02d459c32f0e68f2fe0981033bb34f38776ba47 $commit_sha1 +EOF + +cat >expect_log_z <<EOF +$commit_sha5 commit5 + +$commit_sha4 commit4 + +$commit_sha3 commit3 +notes for commit3 + +appended notes for commit3 + +$commit_sha2 commit2 +new notes for commit2 + +$commit_sha1 commit1 +notes for commit1 + +EOF + +test_expect_success 'change some of the initial 5 notes (x -> z)' ' + git update-ref refs/notes/z refs/notes/x && + git config core.notesRef refs/notes/z && + git notes add -f -m "new notes for commit2" commit2 && + git notes append -m "appended notes for commit3" commit3 && + git notes remove commit4 && + git notes remove commit5 && + verify_notes z commit5 +' + +test_expect_success 'notes tree has no fanout (z)' 'verify_no_fanout z' + +cp expect_log_z expect_log_m + +test_expect_success 'successful merge without conflicts (y => z)' ' + git update-ref refs/notes/m refs/notes/z && + git config core.notesRef refs/notes/m && + git notes merge y && + verify_notes m commit5 && + # x/y/z unchanged + verify_notes x commit5 && + verify_notes y commit5 && + verify_notes z commit5 +' + +test_expect_success 'notes tree still has fanout after merge (m)' 'verify_fanout m' + +cat >expect_log_w <<EOF +$commit_sha5 commit5 + +$commit_sha4 commit4 +other notes for commit4 + +$commit_sha3 commit3 +other notes for commit3 + +$commit_sha2 commit2 +notes for commit2 + +$commit_sha1 commit1 +other notes for commit1 + +EOF + +test_expect_success 'introduce conflicting changes (y -> w)' ' + git update-ref refs/notes/w refs/notes/y && + git config core.notesRef refs/notes/w && + git notes add -f -m "other notes for commit1" commit1 && + git notes add -f -m "other notes for commit3" commit3 && + git notes add -f -m "other notes for commit4" commit4 && + git notes remove commit5 && + verify_notes w commit5 +' + +cat >expect_log_m <<EOF +$commit_sha5 commit5 + +$commit_sha4 commit4 +other notes for commit4 + +$commit_sha3 commit3 +other notes for commit3 + +$commit_sha2 commit2 +new notes for commit2 + +$commit_sha1 commit1 +other notes for commit1 + +EOF + +test_expect_success 'successful merge using "ours" strategy (z => w)' ' + git update-ref refs/notes/m refs/notes/w && + git config core.notesRef refs/notes/m && + git notes merge -s ours z && + verify_notes m commit5 && + # w/x/y/z unchanged + verify_notes w commit5 && + verify_notes x commit5 && + verify_notes y commit5 && + verify_notes z commit5 +' + +test_expect_success 'notes tree still has fanout after merge (m)' 'verify_fanout m' + +cat >expect_log_m <<EOF +$commit_sha5 commit5 + +$commit_sha4 commit4 + +$commit_sha3 commit3 +notes for commit3 + +appended notes for commit3 + +$commit_sha2 commit2 +new notes for commit2 + +$commit_sha1 commit1 +other notes for commit1 + +EOF + +test_expect_success 'successful merge using "theirs" strategy (z => w)' ' + git update-ref refs/notes/m refs/notes/w && + git notes merge -s theirs z && + verify_notes m commit5 && + # w/x/y/z unchanged + verify_notes w commit5 && + verify_notes x commit5 && + verify_notes y commit5 && + verify_notes z commit5 +' + +test_expect_success 'notes tree still has fanout after merge (m)' 'verify_fanout m' + +cat >expect_log_m <<EOF +$commit_sha5 commit5 + +$commit_sha4 commit4 +other notes for commit4 + +$commit_sha3 commit3 +other notes for commit3 + +notes for commit3 + +appended notes for commit3 + +$commit_sha2 commit2 +new notes for commit2 + +$commit_sha1 commit1 +other notes for commit1 + +EOF + +test_expect_success 'successful merge using "union" strategy (z => w)' ' + git update-ref refs/notes/m refs/notes/w && + git notes merge -s union z && + verify_notes m commit5 && + # w/x/y/z unchanged + verify_notes w commit5 && + verify_notes x commit5 && + verify_notes y commit5 && + verify_notes z commit5 +' + +test_expect_success 'notes tree still has fanout after merge (m)' 'verify_fanout m' + +cat >expect_log_m <<EOF +$commit_sha5 commit5 + +$commit_sha4 commit4 +other notes for commit4 + +$commit_sha3 commit3 +appended notes for commit3 +notes for commit3 +other notes for commit3 + +$commit_sha2 commit2 +new notes for commit2 + +$commit_sha1 commit1 +other notes for commit1 + +EOF + +test_expect_success 'successful merge using "cat_sort_uniq" strategy (z => w)' ' + git update-ref refs/notes/m refs/notes/w && + git notes merge -s cat_sort_uniq z && + verify_notes m commit5 && + # w/x/y/z unchanged + verify_notes w commit5 && + verify_notes x commit5 && + verify_notes y commit5 && + verify_notes z commit5 +' + +test_expect_success 'notes tree still has fanout after merge (m)' 'verify_fanout m' + +# We're merging z into w. Here are the conflicts we expect: +# +# commit | x -> w | x -> z | conflict? +# -------|-----------|-----------|---------- +# 1 | changed | unchanged | no, use w +# 2 | unchanged | changed | no, use z +# 3 | changed | changed | yes (w, then z in conflict markers) +# 4 | changed | deleted | yes (w) +# 5 | deleted | deleted | no, deleted + +test_expect_success 'fails to merge using "manual" strategy (z => w)' ' + git update-ref refs/notes/m refs/notes/w && + test_must_fail git notes merge z +' + +test_expect_success 'notes tree still has fanout after merge (m)' 'verify_fanout m' + +cat <<EOF | sort >expect_conflicts +$commit_sha3 +$commit_sha4 +EOF + +cat >expect_conflict_$commit_sha3 <<EOF +<<<<<<< refs/notes/m +other notes for commit3 +======= +notes for commit3 + +appended notes for commit3 +>>>>>>> refs/notes/z +EOF + +cat >expect_conflict_$commit_sha4 <<EOF +other notes for commit4 +EOF + +test_expect_success 'verify conflict entries (with no fanout)' ' + ls .git/NOTES_MERGE_WORKTREE >output_conflicts && + test_cmp expect_conflicts output_conflicts && + ( for f in $(cat expect_conflicts); do + test_cmp "expect_conflict_$f" ".git/NOTES_MERGE_WORKTREE/$f" || + exit 1 + done ) && + # Verify that current notes tree (pre-merge) has not changed (m == w) + test "$(git rev-parse refs/notes/m)" = "$(git rev-parse refs/notes/w)" +' + +cat >expect_log_m <<EOF +$commit_sha5 commit5 + +$commit_sha4 commit4 +other notes for commit4 + +$commit_sha3 commit3 +other notes for commit3 + +appended notes for commit3 + +$commit_sha2 commit2 +new notes for commit2 + +$commit_sha1 commit1 +other notes for commit1 + +EOF + +test_expect_success 'resolve and finalize merge (z => w)' ' + cat >.git/NOTES_MERGE_WORKTREE/$commit_sha3 <<EOF && +other notes for commit3 + +appended notes for commit3 +EOF + git notes merge --commit && + verify_notes m commit5 && + # w/x/y/z unchanged + verify_notes w commit5 && + verify_notes x commit5 && + verify_notes y commit5 && + verify_notes z commit5 +' + +test_expect_success 'notes tree still has fanout after merge (m)' 'verify_fanout m' + +test_done diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh index 5cb7e70d54..d3a3bd2679 100755 --- a/t/t3404-rebase-interactive.sh +++ b/t/t3404-rebase-interactive.sh @@ -647,6 +647,7 @@ test_expect_success 'rebase -i can copy notes' ' cat >expect <<EOF an earlier note + a note EOF diff --git a/t/t7609-merge-abort.sh b/t/t7609-merge-abort.sh new file mode 100755 index 0000000000..61890bc892 --- /dev/null +++ b/t/t7609-merge-abort.sh @@ -0,0 +1,313 @@ +#!/bin/sh + +test_description='test aborting in-progress merges + +Set up repo with conflicting and non-conflicting branches: + +There are three files foo/bar/baz, and the following graph illustrates the +content of these files in each commit: + +# foo/bar/baz --- foo/bar/bazz <-- master +# \ +# --- foo/barf/bazf <-- conflict_branch +# \ +# --- foo/bart/baz <-- clean_branch + +Next, test git merge --abort with the following variables: +- before/after successful merge (should fail when not in merge context) +- with/without conflicts +- clean/dirty index before merge +- clean/dirty worktree before merge +- dirty index before merge matches contents on remote branch +- changed/unchanged worktree after merge +- changed/unchanged index after merge +' +. ./test-lib.sh + +test_expect_success 'setup' ' + # Create the above repo + echo foo > foo && + echo bar > bar && + echo baz > baz && + git add foo bar baz && + git commit -m initial && + echo bazz > baz && + git commit -a -m "second" && + git checkout -b conflict_branch HEAD^ && + echo barf > bar && + echo bazf > baz && + git commit -a -m "conflict" && + git checkout -b clean_branch HEAD^ && + echo bart > bar && + git commit -a -m "clean" && + git checkout master +' + +pre_merge_head="$(git rev-parse HEAD)" + +test_expect_success 'fails without MERGE_HEAD (unstarted merge)' ' + test_must_fail git merge --abort 2>output && + grep -q MERGE_HEAD output && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" +' + +test_expect_success 'fails without MERGE_HEAD (completed merge)' ' + git merge clean_branch && + test ! -f .git/MERGE_HEAD && + # Merge successfully completed + post_merge_head="$(git rev-parse HEAD)" && + test_must_fail git merge --abort 2>output && + grep -q MERGE_HEAD output && + test ! -f .git/MERGE_HEAD && + test "$post_merge_head" = "$(git rev-parse HEAD)" +' + +test_expect_success 'Forget previous merge' ' + git reset --hard "$pre_merge_head" +' + +test_expect_success 'Abort after --no-commit' ' + # Redo merge, but stop before creating merge commit + git merge --no-commit clean_branch && + test -f .git/MERGE_HEAD && + # Abort non-conflicting merge + git merge --abort && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + test -z "$(git diff)" && + test -z "$(git diff --staged)" +' + +test_expect_success 'Abort after conflicts' ' + # Create conflicting merge + test_must_fail git merge conflict_branch && + test -f .git/MERGE_HEAD && + # Abort conflicting merge + git merge --abort && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + test -z "$(git diff)" && + test -z "$(git diff --staged)" +' + +test_expect_success 'Clean merge with dirty index fails' ' + echo xyzzy >> foo && + git add foo && + git diff --staged > expect && + test_must_fail git merge clean_branch && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + test -z "$(git diff)" && + git diff --staged > actual && + test_cmp expect actual +' + +test_expect_success 'Conflicting merge with dirty index fails' ' + test_must_fail git merge conflict_branch && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + test -z "$(git diff)" && + git diff --staged > actual && + test_cmp expect actual +' + +test_expect_success 'Reset index (but preserve worktree changes)' ' + git reset "$pre_merge_head" && + git diff > actual && + test_cmp expect actual +' + +test_expect_success 'Abort clean merge with non-conflicting dirty worktree' ' + git merge --no-commit clean_branch && + test -f .git/MERGE_HEAD && + # Abort merge + git merge --abort && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + test -z "$(git diff --staged)" && + git diff > actual && + test_cmp expect actual +' + +test_expect_success 'Abort conflicting merge with non-conflicting dirty worktree' ' + test_must_fail git merge conflict_branch && + test -f .git/MERGE_HEAD && + # Abort merge + git merge --abort && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + test -z "$(git diff --staged)" && + git diff > actual && + test_cmp expect actual +' + +test_expect_success 'Reset worktree changes' ' + git reset --hard "$pre_merge_head" +' + +test_expect_success 'Fail clean merge with conflicting dirty worktree' ' + echo xyzzy >> bar && + git diff > expect && + test_must_fail git merge --no-commit clean_branch && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + test -z "$(git diff --staged)" && + git diff > actual && + test_cmp expect actual +' + +test_expect_success 'Fail conflicting merge with conflicting dirty worktree' ' + test_must_fail git merge conflict_branch && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + test -z "$(git diff --staged)" && + git diff > actual && + test_cmp expect actual +' + +test_expect_success 'Reset worktree changes' ' + git reset --hard "$pre_merge_head" +' + +test_expect_success 'Fail clean merge with matching dirty worktree' ' + echo bart > bar && + git diff > expect && + test_must_fail git merge --no-commit clean_branch && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + test -z "$(git diff --staged)" && + git diff > actual && + test_cmp expect actual +' + +test_expect_success 'Abort clean merge with matching dirty index' ' + git add bar && + git diff --staged > expect && + git merge --no-commit clean_branch && + test -f .git/MERGE_HEAD && + ### When aborting the merge, git will discard all staged changes, + ### including those that were staged pre-merge. In other words, + ### --abort will LOSE any staged changes (the staged changes that + ### are lost must match the merge result, or the merge would not + ### have been allowed to start). Change expectations accordingly: + rm expect && + touch expect && + # Abort merge + git merge --abort && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + git diff --staged > actual && + test_cmp expect actual && + test -z "$(git diff)" +' + +test_expect_success 'Reset worktree changes' ' + git reset --hard "$pre_merge_head" +' + +test_expect_success 'Fail conflicting merge with matching dirty worktree' ' + echo barf > bar && + git diff > expect && + test_must_fail git merge conflict_branch && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + test -z "$(git diff --staged)" && + git diff > actual && + test_cmp expect actual +' + +test_expect_success 'Abort conflicting merge with matching dirty index' ' + git add bar && + git diff --staged > expect && + test_must_fail git merge conflict_branch && + test -f .git/MERGE_HEAD && + ### When aborting the merge, git will discard all staged changes, + ### including those that were staged pre-merge. In other words, + ### --abort will LOSE any staged changes (the staged changes that + ### are lost must match the merge result, or the merge would not + ### have been allowed to start). Change expectations accordingly: + rm expect && + touch expect && + # Abort merge + git merge --abort && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + git diff --staged > actual && + test_cmp expect actual && + test -z "$(git diff)" +' + +test_expect_success 'Reset worktree changes' ' + git reset --hard "$pre_merge_head" +' + +test_expect_success 'Abort merge with pre- and post-merge worktree changes' ' + # Pre-merge worktree changes + echo xyzzy > foo && + echo barf > bar && + git add bar && + git diff > expect && + git diff --staged > expect-staged && + # Perform merge + test_must_fail git merge conflict_branch && + test -f .git/MERGE_HEAD && + # Post-merge worktree changes + echo yzxxz > foo && + echo blech > baz && + ### When aborting the merge, git will discard staged changes (bar) + ### and unmerged changes (baz). Other changes that are neither + ### staged nor marked as unmerged (foo), will be preserved. For + ### these changed, git cannot tell pre-merge changes apart from + ### post-merge changes, so the post-merge changes will be + ### preserved. Change expectations accordingly: + git diff -- foo > expect && + rm expect-staged && + touch expect-staged && + # Abort merge + git merge --abort && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + git diff > actual && + test_cmp expect actual && + git diff --staged > actual-staged && + test_cmp expect-staged actual-staged +' + +test_expect_success 'Reset worktree changes' ' + git reset --hard "$pre_merge_head" +' + +test_expect_success 'Abort merge with pre- and post-merge index changes' ' + # Pre-merge worktree changes + echo xyzzy > foo && + echo barf > bar && + git add bar && + git diff > expect && + git diff --staged > expect-staged && + # Perform merge + test_must_fail git merge conflict_branch && + test -f .git/MERGE_HEAD && + # Post-merge worktree changes + echo yzxxz > foo && + echo blech > baz && + git add foo bar && + ### When aborting the merge, git will discard all staged changes + ### (foo, bar and baz), and no changes will be preserved. Whether + ### the changes were staged pre- or post-merge does not matter + ### (except for not preventing starting the merge). + ### Change expectations accordingly: + rm expect expect-staged && + touch expect && + touch expect-staged && + # Abort merge + git merge --abort && + test ! -f .git/MERGE_HEAD && + test "$pre_merge_head" = "$(git rev-parse HEAD)" && + git diff > actual && + test_cmp expect actual && + git diff --staged > actual-staged && + test_cmp expect-staged actual-staged +' + +test_done diff --git a/t/t9301-fast-import-notes.sh b/t/t9301-fast-import-notes.sh index a5c99d8507..7cf8cd8a2f 100755 --- a/t/t9301-fast-import-notes.sh +++ b/t/t9301-fast-import-notes.sh @@ -255,13 +255,18 @@ EOF INPUT_END +whitespace=" " + cat >expect <<EXPECT_END fourth commit pre-prefix of note for fourth commit +$whitespace prefix of note for fourth commit +$whitespace third note for fourth commit third commit prefix of note for third commit +$whitespace third note for third commit second commit third note for second commit |