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Diffstat (limited to 'tests/clar_libgit2.c')
-rw-r--r-- | tests/clar_libgit2.c | 483 |
1 files changed, 483 insertions, 0 deletions
diff --git a/tests/clar_libgit2.c b/tests/clar_libgit2.c new file mode 100644 index 000000000..50762cdb8 --- /dev/null +++ b/tests/clar_libgit2.c @@ -0,0 +1,483 @@ +#include "clar_libgit2.h" +#include "posix.h" +#include "path.h" +#include "git2/sys/repository.h" + +void cl_git_report_failure( + int error, const char *file, int line, const char *fncall) +{ + char msg[4096]; + const git_error *last = giterr_last(); + p_snprintf(msg, 4096, "error %d - %s", + error, last ? last->message : "<no message>"); + clar__assert(0, file, line, fncall, msg, 1); +} + +void cl_git_mkfile(const char *filename, const char *content) +{ + int fd; + + fd = p_creat(filename, 0666); + cl_assert(fd != 0); + + if (content) { + cl_must_pass(p_write(fd, content, strlen(content))); + } else { + cl_must_pass(p_write(fd, filename, strlen(filename))); + cl_must_pass(p_write(fd, "\n", 1)); + } + + cl_must_pass(p_close(fd)); +} + +void cl_git_write2file( + const char *path, const char *content, size_t content_len, + int flags, unsigned int mode) +{ + int fd; + cl_assert(path && content); + cl_assert((fd = p_open(path, flags, mode)) >= 0); + if (!content_len) + content_len = strlen(content); + cl_must_pass(p_write(fd, content, content_len)); + cl_must_pass(p_close(fd)); +} + +void cl_git_append2file(const char *path, const char *content) +{ + cl_git_write2file(path, content, 0, O_WRONLY | O_CREAT | O_APPEND, 0644); +} + +void cl_git_rewritefile(const char *path, const char *content) +{ + cl_git_write2file(path, content, 0, O_WRONLY | O_CREAT | O_TRUNC, 0644); +} + +#ifdef GIT_WIN32 + +#include "win32/utf-conv.h" + +char *cl_getenv(const char *name) +{ + git_win32_path name_utf16; + DWORD alloc_len; + wchar_t *value_utf16; + char *value_utf8; + + git_win32_path_from_c(name_utf16, name); + alloc_len = GetEnvironmentVariableW(name_utf16, NULL, 0); + if (alloc_len <= 0) + return NULL; + + cl_assert(value_utf16 = git__calloc(alloc_len, sizeof(wchar_t))); + + GetEnvironmentVariableW(name_utf16, value_utf16, alloc_len); + + alloc_len = alloc_len * 4 + 1; /* worst case UTF16->UTF8 growth */ + cl_assert(value_utf8 = git__calloc(alloc_len, 1)); + + git__utf16_to_8(value_utf8, alloc_len, value_utf16); + + git__free(value_utf16); + + return value_utf8; +} + +int cl_setenv(const char *name, const char *value) +{ + git_win32_path name_utf16; + git_win32_path value_utf16; + + git_win32_path_from_c(name_utf16, name); + + if (value) { + git_win32_path_from_c(value_utf16, value); + cl_assert(SetEnvironmentVariableW(name_utf16, value_utf16)); + } else { + /* Windows XP returns 0 (failed) when passing NULL for lpValue when + * lpName does not exist in the environment block. This behavior + * seems to have changed in later versions. Don't check return value + * of SetEnvironmentVariable when passing NULL for lpValue. + */ + SetEnvironmentVariableW(name_utf16, NULL); + } + + return 0; +} + +/* This function performs retries on calls to MoveFile in order + * to provide enhanced reliability in the face of antivirus + * agents that may be scanning the source (or in the case that + * the source is a directory, a child of the source). */ +int cl_rename(const char *source, const char *dest) +{ + git_win32_path source_utf16; + git_win32_path dest_utf16; + unsigned retries = 1; + + git_win32_path_from_c(source_utf16, source); + git_win32_path_from_c(dest_utf16, dest); + + while (!MoveFileW(source_utf16, dest_utf16)) { + /* Only retry if the error is ERROR_ACCESS_DENIED; + * this may indicate that an antivirus agent is + * preventing the rename from source to target */ + if (retries > 5 || + ERROR_ACCESS_DENIED != GetLastError()) + return -1; + + /* With 5 retries and a coefficient of 10ms, the maximum + * delay here is 550 ms */ + Sleep(10 * retries * retries); + retries++; + } + + return 0; +} + +#else + +#include <stdlib.h> +char *cl_getenv(const char *name) +{ + return getenv(name); +} + +int cl_setenv(const char *name, const char *value) +{ + return (value == NULL) ? unsetenv(name) : setenv(name, value, 1); +} + +int cl_rename(const char *source, const char *dest) +{ + return p_rename(source, dest); +} + +#endif + +static const char *_cl_sandbox = NULL; +static git_repository *_cl_repo = NULL; + +git_repository *cl_git_sandbox_init(const char *sandbox) +{ + /* Copy the whole sandbox folder from our fixtures to our test sandbox + * area. After this it can be accessed with `./sandbox` + */ + cl_fixture_sandbox(sandbox); + _cl_sandbox = sandbox; + + cl_git_pass(p_chdir(sandbox)); + + /* If this is not a bare repo, then rename `sandbox/.gitted` to + * `sandbox/.git` which must be done since we cannot store a folder + * named `.git` inside the fixtures folder of our libgit2 repo. + */ + if (p_access(".gitted", F_OK) == 0) + cl_git_pass(cl_rename(".gitted", ".git")); + + /* If we have `gitattributes`, rename to `.gitattributes`. This may + * be necessary if we don't want the attributes to be applied in the + * libgit2 repo, but just during testing. + */ + if (p_access("gitattributes", F_OK) == 0) + cl_git_pass(cl_rename("gitattributes", ".gitattributes")); + + /* As with `gitattributes`, we may need `gitignore` just for testing. */ + if (p_access("gitignore", F_OK) == 0) + cl_git_pass(cl_rename("gitignore", ".gitignore")); + + cl_git_pass(p_chdir("..")); + + /* Now open the sandbox repository and make it available for tests */ + cl_git_pass(git_repository_open(&_cl_repo, sandbox)); + + /* Adjust configs after copying to new filesystem */ + cl_git_pass(git_repository_reinit_filesystem(_cl_repo, 0)); + + return _cl_repo; +} + +git_repository *cl_git_sandbox_reopen(void) +{ + if (_cl_repo) { + git_repository_free(_cl_repo); + _cl_repo = NULL; + + cl_git_pass(git_repository_open(&_cl_repo, _cl_sandbox)); + } + + return _cl_repo; +} + +void cl_git_sandbox_cleanup(void) +{ + if (_cl_repo) { + git_repository_free(_cl_repo); + _cl_repo = NULL; + } + if (_cl_sandbox) { + cl_fixture_cleanup(_cl_sandbox); + _cl_sandbox = NULL; + } +} + +bool cl_toggle_filemode(const char *filename) +{ + struct stat st1, st2; + + cl_must_pass(p_stat(filename, &st1)); + cl_must_pass(p_chmod(filename, st1.st_mode ^ 0100)); + cl_must_pass(p_stat(filename, &st2)); + + return (st1.st_mode != st2.st_mode); +} + +bool cl_is_chmod_supported(void) +{ + static int _is_supported = -1; + + if (_is_supported < 0) { + cl_git_mkfile("filemode.t", "Test if filemode can be modified"); + _is_supported = cl_toggle_filemode("filemode.t"); + cl_must_pass(p_unlink("filemode.t")); + } + + return _is_supported; +} + +const char* cl_git_fixture_url(const char *fixturename) +{ + return cl_git_path_url(cl_fixture(fixturename)); +} + +const char* cl_git_path_url(const char *path) +{ + static char url[4096]; + + const char *in_buf; + git_buf path_buf = GIT_BUF_INIT; + git_buf url_buf = GIT_BUF_INIT; + + cl_git_pass(git_path_prettify_dir(&path_buf, path, NULL)); + cl_git_pass(git_buf_puts(&url_buf, "file://")); + +#ifdef GIT_WIN32 + /* + * A FILE uri matches the following format: file://[host]/path + * where "host" can be empty and "path" is an absolute path to the resource. + * + * In this test, no hostname is used, but we have to ensure the leading triple slashes: + * + * *nix: file:///usr/home/... + * Windows: file:///C:/Users/... + */ + cl_git_pass(git_buf_putc(&url_buf, '/')); +#endif + + in_buf = git_buf_cstr(&path_buf); + + /* + * A very hacky Url encoding that only takes care of escaping the spaces + */ + while (*in_buf) { + if (*in_buf == ' ') + cl_git_pass(git_buf_puts(&url_buf, "%20")); + else + cl_git_pass(git_buf_putc(&url_buf, *in_buf)); + + in_buf++; + } + + strncpy(url, git_buf_cstr(&url_buf), 4096); + git_buf_free(&url_buf); + git_buf_free(&path_buf); + return url; +} + +typedef struct { + const char *filename; + size_t filename_len; +} remove_data; + +static int remove_placeholders_recurs(void *_data, git_buf *path) +{ + remove_data *data = (remove_data *)_data; + size_t pathlen; + + if (git_path_isdir(path->ptr) == true) + return git_path_direach(path, 0, remove_placeholders_recurs, data); + + pathlen = path->size; + + if (pathlen < data->filename_len) + return 0; + + /* if path ends in '/'+filename (or equals filename) */ + if (!strcmp(data->filename, path->ptr + pathlen - data->filename_len) && + (pathlen == data->filename_len || + path->ptr[pathlen - data->filename_len - 1] == '/')) + return p_unlink(path->ptr); + + return 0; +} + +int cl_git_remove_placeholders(const char *directory_path, const char *filename) +{ + int error; + remove_data data; + git_buf buffer = GIT_BUF_INIT; + + if (git_path_isdir(directory_path) == false) + return -1; + + if (git_buf_sets(&buffer, directory_path) < 0) + return -1; + + data.filename = filename; + data.filename_len = strlen(filename); + + error = remove_placeholders_recurs(&data, &buffer); + + git_buf_free(&buffer); + + return error; +} + +#define CL_COMMIT_NAME "Libgit2 Tester" +#define CL_COMMIT_EMAIL "libgit2-test@github.com" +#define CL_COMMIT_MSG "Test commit of tree " + +void cl_repo_commit_from_index( + git_oid *out, + git_repository *repo, + git_signature *sig, + git_time_t time, + const char *msg) +{ + git_index *index; + git_oid commit_id, tree_id; + git_object *parent = NULL; + git_reference *ref = NULL; + git_tree *tree = NULL; + char buf[128]; + int free_sig = (sig == NULL); + + /* it is fine if looking up HEAD fails - we make this the first commit */ + git_revparse_ext(&parent, &ref, repo, "HEAD"); + + /* write the index content as a tree */ + cl_git_pass(git_repository_index(&index, repo)); + cl_git_pass(git_index_write_tree(&tree_id, index)); + cl_git_pass(git_index_write(index)); + git_index_free(index); + + cl_git_pass(git_tree_lookup(&tree, repo, &tree_id)); + + if (sig) + cl_assert(sig->name && sig->email); + else if (!time) + cl_git_pass(git_signature_now(&sig, CL_COMMIT_NAME, CL_COMMIT_EMAIL)); + else + cl_git_pass(git_signature_new( + &sig, CL_COMMIT_NAME, CL_COMMIT_EMAIL, time, 0)); + + if (!msg) { + strcpy(buf, CL_COMMIT_MSG); + git_oid_tostr(buf + strlen(CL_COMMIT_MSG), + sizeof(buf) - strlen(CL_COMMIT_MSG), &tree_id); + msg = buf; + } + + cl_git_pass(git_commit_create_v( + &commit_id, repo, ref ? git_reference_name(ref) : "HEAD", + sig, sig, NULL, msg, tree, parent ? 1 : 0, parent)); + + if (out) + git_oid_cpy(out, &commit_id); + + git_object_free(parent); + git_reference_free(ref); + if (free_sig) + git_signature_free(sig); + git_tree_free(tree); +} + +void cl_repo_set_bool(git_repository *repo, const char *cfg, int value) +{ + git_config *config; + cl_git_pass(git_repository_config(&config, repo)); + cl_git_pass(git_config_set_bool(config, cfg, value != 0)); + git_config_free(config); +} + +int cl_repo_get_bool(git_repository *repo, const char *cfg) +{ + int val = 0; + git_config *config; + cl_git_pass(git_repository_config(&config, repo)); + cl_git_pass(git_config_get_bool(&val, config, cfg));; + git_config_free(config); + return val; +} + +/* this is essentially the code from git__unescape modified slightly */ +static size_t strip_cr_from_buf(char *start, size_t len) +{ + char *scan, *trail, *end = start + len; + + for (scan = trail = start; scan < end; trail++, scan++) { + while (*scan == '\r') + scan++; /* skip '\r' */ + + if (trail != scan) + *trail = *scan; + } + + *trail = '\0'; + + return (trail - start); +} + +void clar__assert_equal_file( + const char *expected_data, + size_t expected_bytes, + int ignore_cr, + const char *path, + const char *file, + int line) +{ + char buf[4000]; + ssize_t bytes, total_bytes = 0; + int fd = p_open(path, O_RDONLY | O_BINARY); + cl_assert(fd >= 0); + + if (expected_data && !expected_bytes) + expected_bytes = strlen(expected_data); + + while ((bytes = p_read(fd, buf, sizeof(buf))) != 0) { + clar__assert( + bytes > 0, file, line, "error reading from file", path, 1); + + if (ignore_cr) + bytes = strip_cr_from_buf(buf, bytes); + + if (memcmp(expected_data, buf, bytes) != 0) { + int pos; + for (pos = 0; pos < bytes && expected_data[pos] == buf[pos]; ++pos) + /* find differing byte offset */; + p_snprintf( + buf, sizeof(buf), "file content mismatch at byte %d", + (int)(total_bytes + pos)); + clar__fail(file, line, buf, path, 1); + } + + expected_data += bytes; + total_bytes += bytes; + } + + p_close(fd); + + clar__assert(!bytes, file, line, "error reading from file", path, 1); + clar__assert_equal(file, line, "mismatched file length", 1, "%"PRIuZ, + (size_t)expected_bytes, (size_t)total_bytes); +} |