fetch: add a test for local fetching

src/remote.c

@@ -1822,7 +1822,8 @@ static int update_one_tip(
 	if (error < 0 && error != GIT_ENOTFOUND)
 		goto done;
 
-	if (!spec->force &&
+	if (!(error || error == GIT_ENOTFOUND) &&
+	    !spec->force &&
 	    !git_graph_descendant_of(remote->repo, &head->oid, &old)) {
 		error = 0;
 		goto done;
@@ -1856,6 +1857,7 @@ static int update_one_tip(
 
 done:
 	git_reference_free(ref);
+	git_str_dispose(&refname);
 	return error;
 }
 

tests/fetch/local.c

+#include "clar_libgit2.h"
+#include "futils.h"
+
+static git_repository *repo;
+
+void test_fetch_local__initialize(void)
+{
+	cl_git_pass(git_repository_init(&repo, "./fetch", 0));
+}
+
+void test_fetch_local__cleanup(void)
+{
+	git_repository_free(repo);
+	repo = NULL;
+
+	cl_fixture_cleanup("./fetch");
+}
+
+void test_fetch_local__defaults(void)
+{
+	git_remote *remote;
+	git_object *obj;
+	git_oid expected_id;
+
+	cl_git_pass(git_remote_create(&remote, repo, "test",
+		cl_fixture("testrepo.git")));
+	cl_git_pass(git_remote_fetch(remote, NULL, NULL, NULL));
+
+	git_oid_fromstr(&expected_id, "258f0e2a959a364e40ed6603d5d44fbb24765b10");
+
+	cl_git_pass(git_revparse_single(&obj, repo, "refs/remotes/test/haacked"));
+	cl_assert_equal_oid(&expected_id, git_object_id(obj));
+
+	git_object_free(obj);
+	git_remote_free(remote);
+}