1 files changed, 367 insertions, 0 deletions
diff --git a/tests/refs/rename.c b/tests/refs/rename.c
new file mode 100644
index 000000000..543bc4d62
--- /dev/null
+++ b/tests/refs/rename.c
@@ -0,0 +1,367 @@
+#include "clar_libgit2.h"
+
+#include "fileops.h"
+#include "git2/reflog.h"
+#include "reflog.h"
+#include "refs.h"
+#include "ref_helpers.h"
+
+static const char *loose_tag_ref_name = "refs/tags/e90810b";
+static const char *packed_head_name = "refs/heads/packed";
+static const char *packed_test_head_name = "refs/heads/packed-test";
+static const char *ref_one_name = "refs/heads/one/branch";
+static const char *ref_one_name_new = "refs/heads/two/branch";
+static const char *ref_two_name = "refs/heads/two";
+static const char *ref_master_name = "refs/heads/master";
+static const char *ref_two_name_new = "refs/heads/two/two";
+
+static git_repository *g_repo;
+
+
+
+void test_refs_rename__initialize(void)
+{
+	g_repo = cl_git_sandbox_init("testrepo");
+}
+
+void test_refs_rename__cleanup(void)
+{
+	cl_git_sandbox_cleanup();
+}
+
+
+
+void test_refs_rename__loose(void)
+{
+	// rename a loose reference
+	git_reference *looked_up_ref, *new_ref, *another_looked_up_ref;
+	git_buf temp_path = GIT_BUF_INIT;
+	const char *new_name = "refs/tags/Nemo/knows/refs.kung-fu";
+
+	/* Ensure the ref doesn't exist on the file system */
+	cl_git_pass(git_buf_joinpath(&temp_path, git_repository_path(g_repo), new_name));
+	cl_assert(!git_path_exists(temp_path.ptr));
+
+	/* Retrieval of the reference to rename */
+	cl_git_pass(git_reference_lookup(&looked_up_ref, g_repo, loose_tag_ref_name));
+
+	/* ... which is indeed loose */
+	cl_assert(reference_is_packed(looked_up_ref) == 0);
+
+	/* Now that the reference is renamed... */
+	cl_git_pass(git_reference_rename(&new_ref, looked_up_ref, new_name, 0));
+	cl_assert_equal_s(new_ref->name, new_name);
+	git_reference_free(looked_up_ref);
+
+	/* ...It can't be looked-up with the old name... */
+	cl_git_fail(git_reference_lookup(&another_looked_up_ref, g_repo, loose_tag_ref_name));
+
+	/* ...but the new name works ok... */
+	cl_git_pass(git_reference_lookup(&another_looked_up_ref, g_repo, new_name));
+	cl_assert_equal_s(new_ref->name, new_name);
+
+	/* .. the new ref is loose... */
+	cl_assert(reference_is_packed(another_looked_up_ref) == 0);
+	cl_assert(reference_is_packed(new_ref) == 0);
+
+	/* ...and the ref can be found in the file system */
+	cl_git_pass(git_buf_joinpath(&temp_path, git_repository_path(g_repo), new_name));
+	cl_assert(git_path_exists(temp_path.ptr));
+
+	git_reference_free(new_ref);
+	git_reference_free(another_looked_up_ref);
+	git_buf_free(&temp_path);
+}
+
+void test_refs_rename__packed(void)
+{
+	// rename a packed reference (should make it loose)
+	git_reference *looked_up_ref, *new_ref, *another_looked_up_ref;
+	git_buf temp_path = GIT_BUF_INIT;
+	const char *brand_new_name = "refs/heads/brand_new_name";
+
+	/* Ensure the ref doesn't exist on the file system */
+	cl_git_pass(git_buf_joinpath(&temp_path, git_repository_path(g_repo), packed_head_name));
+	cl_assert(!git_path_exists(temp_path.ptr));
+
+	/* The reference can however be looked-up... */
+	cl_git_pass(git_reference_lookup(&looked_up_ref, g_repo, packed_head_name));
+
+	/* .. and it's packed */
+	cl_assert(reference_is_packed(looked_up_ref) != 0);
+
+	/* Now that the reference is renamed... */
+	cl_git_pass(git_reference_rename(&new_ref, looked_up_ref, brand_new_name, 0));
+	cl_assert_equal_s(new_ref->name, brand_new_name);
+	git_reference_free(looked_up_ref);
+
+	/* ...It can't be looked-up with the old name... */
+	cl_git_fail(git_reference_lookup(&another_looked_up_ref, g_repo, packed_head_name));
+
+	/* ...but the new name works ok... */
+	cl_git_pass(git_reference_lookup(&another_looked_up_ref, g_repo, brand_new_name));
+	cl_assert_equal_s(another_looked_up_ref->name, brand_new_name);
+
+	/* .. the ref is no longer packed... */
+	cl_assert(reference_is_packed(another_looked_up_ref) == 0);
+	cl_assert(reference_is_packed(new_ref) == 0);
+
+	/* ...and the ref now happily lives in the file system */
+	cl_git_pass(git_buf_joinpath(&temp_path, git_repository_path(g_repo), brand_new_name));
+	cl_assert(git_path_exists(temp_path.ptr));
+
+	git_reference_free(new_ref);
+	git_reference_free(another_looked_up_ref);
+	git_buf_free(&temp_path);
+}
+
+void test_refs_rename__packed_doesnt_pack_others(void)
+{
+	// renaming a packed reference does not pack another reference which happens to be in both loose and pack state
+	git_reference *looked_up_ref, *another_looked_up_ref, *renamed_ref;
+	git_buf temp_path = GIT_BUF_INIT;
+	const char *brand_new_name = "refs/heads/brand_new_name";
+
+	/* Ensure the other reference exists on the file system */
+	cl_git_pass(git_buf_joinpath(&temp_path, git_repository_path(g_repo), packed_test_head_name));
+	cl_assert(git_path_exists(temp_path.ptr));
+
+	/* Lookup the other reference */
+	cl_git_pass(git_reference_lookup(&another_looked_up_ref, g_repo, packed_test_head_name));
+
+	/* Ensure it's loose */
+	cl_assert(reference_is_packed(another_looked_up_ref) == 0);
+	git_reference_free(another_looked_up_ref);
+
+	/* Lookup the reference to rename */
+	cl_git_pass(git_reference_lookup(&looked_up_ref, g_repo, packed_head_name));
+
+	/* Ensure it's packed */
+	cl_assert(reference_is_packed(looked_up_ref) != 0);
+
+	/* Now that the reference is renamed... */
+	cl_git_pass(git_reference_rename(&renamed_ref, looked_up_ref, brand_new_name, 0));
+	git_reference_free(looked_up_ref);
+
+	/* Lookup the other reference */
+	cl_git_pass(git_reference_lookup(&another_looked_up_ref, g_repo, packed_test_head_name));
+
+	/* Ensure it's loose */
+	cl_assert(reference_is_packed(another_looked_up_ref) == 0);
+
+	/* Ensure the other ref still exists on the file system */
+	cl_assert(git_path_exists(temp_path.ptr));
+
+	git_reference_free(renamed_ref);
+	git_reference_free(another_looked_up_ref);
+	git_buf_free(&temp_path);
+}
+
+void test_refs_rename__name_collision(void)
+{
+	// can not rename a reference with the name of an existing reference
+	git_reference *looked_up_ref, *renamed_ref;
+
+	/* An existing reference... */
+	cl_git_pass(git_reference_lookup(&looked_up_ref, g_repo, packed_head_name));
+
+	/* Can not be renamed to the name of another existing reference. */
+	cl_git_fail(git_reference_rename(&renamed_ref, looked_up_ref, packed_test_head_name, 0));
+	git_reference_free(looked_up_ref);
+
+	/* Failure to rename it hasn't corrupted its state */
+	cl_git_pass(git_reference_lookup(&looked_up_ref, g_repo, packed_head_name));
+	cl_assert_equal_s(looked_up_ref->name, packed_head_name);
+
+	git_reference_free(looked_up_ref);
+}
+
+void test_refs_rename__invalid_name(void)
+{
+	// can not rename a reference with an invalid name
+	git_reference *looked_up_ref, *renamed_ref;
+
+	/* An existing oid reference... */
+	cl_git_pass(git_reference_lookup(&looked_up_ref, g_repo, packed_test_head_name));
+
+	/* Can not be renamed with an invalid name. */
+	cl_assert_equal_i(
+		GIT_EINVALIDSPEC,
+		git_reference_rename(&renamed_ref, looked_up_ref, "Hello! I'm a very invalid name.", 0));
+
+	/* Can not be renamed outside of the refs hierarchy
+	 * unless it's ALL_CAPS_AND_UNDERSCORES.
+	 */
+	cl_assert_equal_i(GIT_EINVALIDSPEC, git_reference_rename(&renamed_ref, looked_up_ref, "i-will-sudo-you", 0));
+
+	/* Failure to rename it hasn't corrupted its state */
+	git_reference_free(looked_up_ref);
+	cl_git_pass(git_reference_lookup(&looked_up_ref, g_repo, packed_test_head_name));
+	cl_assert_equal_s(looked_up_ref->name, packed_test_head_name);
+
+	git_reference_free(looked_up_ref);
+}
+
+void test_refs_rename__force_loose_packed(void)
+{
+	// can force-rename a packed reference with the name of an existing loose and packed reference
+	git_reference *looked_up_ref, *renamed_ref;
+	git_oid oid;
+
+	/* An existing reference... */
+	cl_git_pass(git_reference_lookup(&looked_up_ref, g_repo, packed_head_name));
+	git_oid_cpy(&oid, git_reference_target(looked_up_ref));
+
+	/* Can be force-renamed to the name of another existing reference. */
+	cl_git_pass(git_reference_rename(&renamed_ref, looked_up_ref, packed_test_head_name, 1));
+	git_reference_free(looked_up_ref);
+	git_reference_free(renamed_ref);
+
+	/* Check we actually renamed it */
+	cl_git_pass(git_reference_lookup(&looked_up_ref, g_repo, packed_test_head_name));
+	cl_assert_equal_s(looked_up_ref->name, packed_test_head_name);
+	cl_assert(!git_oid_cmp(&oid, git_reference_target(looked_up_ref)));
+	git_reference_free(looked_up_ref);
+
+	/* And that the previous one doesn't exist any longer */
+	cl_git_fail(git_reference_lookup(&looked_up_ref, g_repo, packed_head_name));
+}
+
+void test_refs_rename__force_loose(void)
+{
+	// can force-rename a loose reference with the name of an existing loose reference
+	git_reference *looked_up_ref, *renamed_ref;
+	git_oid oid;
+
+	/* An existing reference... */
+	cl_git_pass(git_reference_lookup(&looked_up_ref, g_repo, "refs/heads/br2"));
+	git_oid_cpy(&oid, git_reference_target(looked_up_ref));
+
+	/* Can be force-renamed to the name of another existing reference. */
+	cl_git_pass(git_reference_rename(&renamed_ref, looked_up_ref, "refs/heads/test", 1));
+	git_reference_free(looked_up_ref);
+	git_reference_free(renamed_ref);
+
+	/* Check we actually renamed it */
+	cl_git_pass(git_reference_lookup(&looked_up_ref, g_repo, "refs/heads/test"));
+	cl_assert_equal_s(looked_up_ref->name,  "refs/heads/test");
+	cl_assert(!git_oid_cmp(&oid, git_reference_target(looked_up_ref)));
+	git_reference_free(looked_up_ref);
+
+	/* And that the previous one doesn't exist any longer */
+	cl_git_fail(git_reference_lookup(&looked_up_ref, g_repo, "refs/heads/br2"));
+
+	git_reference_free(looked_up_ref);
+}
+
+
+void test_refs_rename__overwrite(void)
+{
+	// can not overwrite name of existing reference
+	git_reference *ref, *ref_one, *ref_one_new, *ref_two;
+	git_refdb *refdb;
+	git_oid id;
+
+	cl_git_pass(git_reference_lookup(&ref, g_repo, ref_master_name));
+	cl_assert(git_reference_type(ref) & GIT_REF_OID);
+
+	git_oid_cpy(&id, git_reference_target(ref));
+
+	/* Create loose references */
+	cl_git_pass(git_reference_create(&ref_one, g_repo, ref_one_name, &id, 0));
+	cl_git_pass(git_reference_create(&ref_two, g_repo, ref_two_name, &id, 0));
+
+	/* Pack everything */
+	cl_git_pass(git_repository_refdb(&refdb, g_repo));
+	cl_git_pass(git_refdb_compress(refdb));
+
+	/* Attempt to create illegal reference */
+	cl_git_fail(git_reference_create(&ref_one_new, g_repo, ref_one_name_new, &id, 0));
+
+	/* Illegal reference couldn't be created so this is supposed to fail */
+	cl_git_fail(git_reference_lookup(&ref_one_new, g_repo, ref_one_name_new));
+
+	git_reference_free(ref);
+	git_reference_free(ref_one);
+	git_reference_free(ref_one_new);
+	git_reference_free(ref_two);
+	git_refdb_free(refdb);
+}
+
+
+void test_refs_rename__prefix(void)
+{
+	// can be renamed to a new name prefixed with the old name
+	git_reference *ref, *ref_two, *looked_up_ref, *renamed_ref;
+	git_oid id;
+
+	cl_git_pass(git_reference_lookup(&ref, g_repo, ref_master_name));
+	cl_assert(git_reference_type(ref) & GIT_REF_OID);
+
+	git_oid_cpy(&id, git_reference_target(ref));
+
+	/* Create loose references */
+	cl_git_pass(git_reference_create(&ref_two, g_repo, ref_two_name, &id, 0));
+
+	/* An existing reference... */
+	cl_git_pass(git_reference_lookup(&looked_up_ref, g_repo, ref_two_name));
+
+	/* Can be rename to a new name starting with the old name. */
+	cl_git_pass(git_reference_rename(&renamed_ref, looked_up_ref, ref_two_name_new, 0));
+	git_reference_free(looked_up_ref);
+	git_reference_free(renamed_ref);
+
+	/* Check we actually renamed it */
+	cl_git_pass(git_reference_lookup(&looked_up_ref, g_repo, ref_two_name_new));
+	cl_assert_equal_s(looked_up_ref->name, ref_two_name_new);
+	git_reference_free(looked_up_ref);
+	cl_git_fail(git_reference_lookup(&looked_up_ref, g_repo, ref_two_name));
+
+	git_reference_free(ref);
+	git_reference_free(ref_two);
+	git_reference_free(looked_up_ref);
+}
+
+void test_refs_rename__move_up(void)
+{
+	// can move a reference to a upper reference hierarchy
+	git_reference *ref, *ref_two, *looked_up_ref, *renamed_ref;
+	git_oid id;
+
+	cl_git_pass(git_reference_lookup(&ref, g_repo, ref_master_name));
+	cl_assert(git_reference_type(ref) & GIT_REF_OID);
+
+	git_oid_cpy(&id, git_reference_target(ref));
+
+	/* Create loose references */
+	cl_git_pass(git_reference_create(&ref_two, g_repo, ref_two_name_new, &id, 0));
+	git_reference_free(ref_two);
+
+	/* An existing reference... */
+	cl_git_pass(git_reference_lookup(&looked_up_ref, g_repo, ref_two_name_new));
+
+	/* Can be renamed upward the reference tree. */
+	cl_git_pass(git_reference_rename(&renamed_ref, looked_up_ref, ref_two_name, 0));
+	git_reference_free(looked_up_ref);
+	git_reference_free(renamed_ref);
+
+	/* Check we actually renamed it */
+	cl_git_pass(git_reference_lookup(&looked_up_ref, g_repo, ref_two_name));
+	cl_assert_equal_s(looked_up_ref->name, ref_two_name);
+	git_reference_free(looked_up_ref);
+
+	cl_git_fail(git_reference_lookup(&looked_up_ref, g_repo, ref_two_name_new));
+	git_reference_free(ref);
+	git_reference_free(looked_up_ref);
+}
+
+void test_refs_rename__propagate_eexists(void)
+{
+	git_reference *ref, *new_ref;
+
+	cl_git_pass(git_reference_lookup(&ref, g_repo, packed_head_name));
+
+	cl_assert_equal_i(GIT_EEXISTS, git_reference_rename(&new_ref, ref, packed_test_head_name, 0));
+
+	git_reference_free(ref);
+}