More tests and fix submodule index refresh

There was a little bug where the submodule cache thought that the
index date was out of date even when it wasn't that was resulting
in some extra scans of index data even when not needed.

Mostly this commit adds a bunch of new tests including adding and
removing submodules in the index and in the HEAD and seeing if we
can automatically pick them up when refreshing.

1 files changed, 29 insertions, 7 deletions

diff --git a/tests/submodule/submodule_helpers.c b/tests/submodule/submodule_helpers.c
index 546f0913a..50aa97568 100644
--- a/tests/submodule/submodule_helpers.c
+++ b/tests/submodule/submodule_helpers.c
@@ -126,20 +126,26 @@ git_repository *setup_fixture_submod2(void)
 	return repo;
 }
 
-void assert_submodule_exists(git_repository *repo, const char *name)
+void assert__submodule_exists(
+	git_repository *repo, const char *name,
+	const char *msg, const char *file, int line)
 {
 	git_submodule *sm;
-	cl_git_pass(git_submodule_lookup(&sm, repo, name));
-	cl_assert(sm);
+	int error = git_submodule_lookup(&sm, repo, name);
+	if (error)
+		cl_git_report_failure(error, file, line, msg);
+	cl_assert_at_line(sm != NULL, file, line);
 	git_submodule_free(sm);
 }
 
-void refute_submodule_exists(
-	git_repository *repo, const char *name, int expected_error)
+void refute__submodule_exists(
+	git_repository *repo, const char *name, int expected_error,
+	const char *msg, const char *file, int line)
 {
 	git_submodule *sm;
-	cl_assert_equal_i(
-		expected_error, git_submodule_lookup(&sm, repo, name));
+	clar__assert_equal(
+		file, line, msg, 1, "%i",
+		expected_error, (int)(git_submodule_lookup(&sm, repo, name)));
 }
 
 unsigned int get_submodule_status(git_repository *repo, const char *name)
@@ -154,3 +160,19 @@ unsigned int get_submodule_status(git_repository *repo, const char *name)
 
 	return status;
 }
+
+static int print_submodules(git_submodule *sm, const char *name, void *p)
+{
+	unsigned int loc = 0;
+	GIT_UNUSED(p);
+	git_submodule_location(&loc, sm);
+	fprintf(stderr, "# submodule %s (at %s) flags %x\n",
+		name, git_submodule_path(sm), loc);
+	return 0;
+}
+
+void dump_submodules(git_repository *repo)
+{
+	git_submodule_foreach(repo, print_submodules, NULL);
+}
+