submodule: test updating a submodule w/ a path

Test that `git_submodule_update` can handle a submodule that is
freshly cloned and has a path differing from its name.

tests/resources/submodule_with_path/.gitmodules

+[submodule "testrepo"]
+	path = lib/testrepo
+	url = ../testrepo.git

tests/resources/submodule_with_path/.gitted/HEAD

+ref: refs/heads/master

tests/resources/submodule_with_path/.gitted/config

+[core]
+	repositoryformatversion = 0
+	filemode = false
+	bare = false
+	logallrefupdates = true
+	symlinks = false
+	ignorecase = true
+	hideDotFiles = dotGitOnly

tests/resources/submodule_with_path/.gitted/refs/heads/master

+89ca686bb21bfb75dda99a02313831a0c418f921

tests/submodule/submodule_helpers.c

@@ -156,6 +156,21 @@ git_repository *setup_fixture_submodule_simple(void)
 	return repo;
 }
 
+git_repository *setup_fixture_submodule_with_path(void)
+{
+	git_repository *repo = cl_git_sandbox_init("submodule_with_path");
+
+	cl_fixture_sandbox("testrepo.git");
+	p_mkdir("submodule_with_path/lib", 0777);
+	p_mkdir("submodule_with_path/lib/testrepo", 0777);
+
+	cl_set_cleanup(cleanup_fixture_submodules, "testrepo.git");
+
+	cl_git_pass(git_repository_reinit_filesystem(repo, 1));
+
+	return repo;
+}
+
 void assert__submodule_exists(
 	git_repository *repo, const char *name,
 	const char *msg, const char *file, int line)

tests/submodule/submodule_helpers.h

@@ -5,6 +5,7 @@ extern git_repository *setup_fixture_submodules(void);
 extern git_repository *setup_fixture_submod2(void);
 extern git_repository *setup_fixture_submodule_simple(void);
 extern git_repository *setup_fixture_super(void);
+extern git_repository *setup_fixture_submodule_with_path(void);
 
 extern unsigned int get_submodule_status(git_repository *, const char *);
 

tests/submodule/update.c

@@ -131,6 +131,53 @@ void test_submodule_update__update_submodule(void)
 	git_submodule_free(sm);
 }
 
+void test_submodule_update__update_submodule_with_path(void)
+{
+	git_submodule *sm;
+	git_submodule_update_options update_options = GIT_SUBMODULE_UPDATE_OPTIONS_INIT;
+	unsigned int submodule_status = 0;
+	struct update_submodule_cb_payload update_payload = { 0 };
+
+	g_repo = setup_fixture_submodule_with_path();
+
+	update_options.checkout_opts.progress_cb = checkout_progress_cb;
+	update_options.checkout_opts.progress_payload = &update_payload;
+
+	update_options.fetch_opts.callbacks.update_tips = update_tips;
+	update_options.fetch_opts.callbacks.payload = &update_payload;
+
+	/* get the submodule */
+	cl_git_pass(git_submodule_lookup(&sm, g_repo, "testrepo"));
+
+	/* verify the initial state of the submodule */
+	cl_git_pass(git_submodule_status(&submodule_status, g_repo, "testrepo", GIT_SUBMODULE_IGNORE_UNSPECIFIED));
+	cl_assert_equal_i(submodule_status, GIT_SUBMODULE_STATUS_IN_HEAD |
+		GIT_SUBMODULE_STATUS_IN_INDEX |
+		GIT_SUBMODULE_STATUS_IN_CONFIG |
+		GIT_SUBMODULE_STATUS_WD_UNINITIALIZED);
+
+	/* initialize and update the submodule */
+	cl_git_pass(git_submodule_init(sm, 0));
+	cl_git_pass(git_submodule_update(sm, 0, &update_options));
+
+	/* verify state */
+	cl_git_pass(git_submodule_status(&submodule_status, g_repo, "testrepo", GIT_SUBMODULE_IGNORE_UNSPECIFIED));
+	cl_assert_equal_i(submodule_status, GIT_SUBMODULE_STATUS_IN_HEAD |
+		GIT_SUBMODULE_STATUS_IN_INDEX |
+		GIT_SUBMODULE_STATUS_IN_CONFIG |
+		GIT_SUBMODULE_STATUS_IN_WD);
+
+	cl_assert(git_oid_streq(git_submodule_head_id(sm), "a65fedf39aefe402d3bb6e24df4d4f5fe4547750") == 0);
+	cl_assert(git_oid_streq(git_submodule_wd_id(sm), "a65fedf39aefe402d3bb6e24df4d4f5fe4547750") == 0);
+	cl_assert(git_oid_streq(git_submodule_index_id(sm), "a65fedf39aefe402d3bb6e24df4d4f5fe4547750") == 0);
+
+	/* verify that the expected callbacks have been called. */
+	cl_assert_equal_i(1, update_payload.checkout_progress_called);
+	cl_assert_equal_i(1, update_payload.update_tips_called);
+
+	git_submodule_free(sm);
+}
+
 void test_submodule_update__update_and_init_submodule(void)
 {
 	git_submodule *sm;
@@ -390,3 +437,4 @@ void test_submodule_update__can_force_update(void)
 	git_object_free(branch_commit);
 	git_reference_free(branch_reference);
 }
+