1 files changed, 99 insertions, 0 deletions
diff --git a/tests/libgit2/odb/sorting.c b/tests/libgit2/odb/sorting.c
new file mode 100644
index 000000000..e027230fa
--- /dev/null
+++ b/tests/libgit2/odb/sorting.c
@@ -0,0 +1,99 @@
+#include "clar_libgit2.h"
+#include "git2/sys/odb_backend.h"
+#include "odb.h"
+
+typedef struct {
+	git_odb_backend base;
+	size_t position;
+} fake_backend;
+
+static git_odb_backend *new_backend(size_t position)
+{
+	fake_backend *b;
+
+	b = git__calloc(1, sizeof(fake_backend));
+	if (b == NULL)
+		return NULL;
+
+	b->base.free = (void (*)(git_odb_backend *)) git__free;
+	b->base.version = GIT_ODB_BACKEND_VERSION;
+	b->position = position;
+	return (git_odb_backend *)b;
+}
+
+static void check_backend_sorting(git_odb *odb)
+{
+	size_t i, max_i = git_odb_num_backends(odb);
+	fake_backend *internal;
+
+	for (i = 0; i < max_i; ++i) {
+		cl_git_pass(git_odb_get_backend((git_odb_backend **)&internal, odb, i));
+		cl_assert(internal != NULL);
+		cl_assert_equal_sz(i, internal->position);
+	}
+}
+
+static git_odb *_odb;
+
+void test_odb_sorting__initialize(void)
+{
+	cl_git_pass(git_odb_new(&_odb));
+}
+
+void test_odb_sorting__cleanup(void)
+{
+	git_odb_free(_odb);
+	_odb = NULL;
+
+	cl_git_pass(git_libgit2_opts(GIT_OPT_SET_ODB_LOOSE_PRIORITY,
+	                             GIT_ODB_DEFAULT_LOOSE_PRIORITY));
+	cl_git_pass(git_libgit2_opts(GIT_OPT_SET_ODB_PACKED_PRIORITY,
+	                             GIT_ODB_DEFAULT_PACKED_PRIORITY));
+}
+
+void test_odb_sorting__basic_backends_sorting(void)
+{
+	cl_git_pass(git_odb_add_backend(_odb, new_backend(0), 5));
+	cl_git_pass(git_odb_add_backend(_odb, new_backend(2), 3));
+	cl_git_pass(git_odb_add_backend(_odb, new_backend(1), 4));
+	cl_git_pass(git_odb_add_backend(_odb, new_backend(3), 1));
+
+	check_backend_sorting(_odb);
+}
+
+void test_odb_sorting__alternate_backends_sorting(void)
+{
+	cl_git_pass(git_odb_add_backend(_odb, new_backend(1), 5));
+	cl_git_pass(git_odb_add_backend(_odb, new_backend(5), 3));
+	cl_git_pass(git_odb_add_backend(_odb, new_backend(3), 4));
+	cl_git_pass(git_odb_add_backend(_odb, new_backend(7), 1));
+	cl_git_pass(git_odb_add_alternate(_odb, new_backend(0), 5));
+	cl_git_pass(git_odb_add_alternate(_odb, new_backend(4), 3));
+	cl_git_pass(git_odb_add_alternate(_odb, new_backend(2), 4));
+	cl_git_pass(git_odb_add_alternate(_odb, new_backend(6), 1));
+
+	check_backend_sorting(_odb);
+}
+
+void test_odb_sorting__override_default_backend_priority(void)
+{
+	git_odb *new_odb;
+	git_odb_backend *loose, *packed, *backend;
+	cl_git_pass(git_libgit2_opts(GIT_OPT_SET_ODB_LOOSE_PRIORITY, 5));
+	cl_git_pass(git_libgit2_opts(GIT_OPT_SET_ODB_PACKED_PRIORITY, 3));
+	git_odb_backend_pack(&packed, "./testrepo.git/objects");
+	git_odb_backend_loose(&loose, "./testrepo.git/objects", -1, 0, 0, 0);
+
+	cl_git_pass(git_odb_open(&new_odb, cl_fixture("testrepo.git/objects")));
+	cl_assert_equal_sz(2, git_odb_num_backends(new_odb));
+
+	cl_git_pass(git_odb_get_backend(&backend, new_odb, 0));
+	cl_assert_equal_p(loose->read, backend->read);
+
+	cl_git_pass(git_odb_get_backend(&backend, new_odb, 1));
+	cl_assert_equal_p(packed->read, backend->read);
+
+	git_odb_free(new_odb);
+	loose->free(loose);
+	packed->free(packed);
+}