commit: add test to ensure predictability of generation of commit, tree and blob object ids

tests-clay/clay.h

@@ -129,6 +129,9 @@ extern void test_network_remotes__initialize(void);
 extern void test_network_remotes__parsing(void);
 extern void test_network_remotes__refspec_parsing(void);
 extern void test_network_remotes__transform(void);
+extern void test_object_commit_commitstagedfile__cleanup(void);
+extern void test_object_commit_commitstagedfile__generate_predictable_object_ids(void);
+extern void test_object_commit_commitstagedfile__initialize(void);
 extern void test_object_raw_chars__build_valid_oid_from_raw_bytes(void);
 extern void test_object_raw_chars__find_invalid_chars_in_oid(void);
 extern void test_object_raw_compare__compare_allocfmt_oids(void);
@@ -159,9 +162,6 @@ extern void test_object_raw_size__validate_oid_size(void);
 extern void test_object_raw_type2string__check_type_is_loose(void);
 extern void test_object_raw_type2string__convert_string_to_type(void);
 extern void test_object_raw_type2string__convert_type_to_string(void);
-extern void test_object_tree_buildfromindex__cleanup(void);
-extern void test_object_tree_buildfromindex__generate_predictable_object_ids(void);
-extern void test_object_tree_buildfromindex__initialize(void);
 extern void test_object_tree_diff__addition(void);
 extern void test_object_tree_diff__cleanup(void);
 extern void test_object_tree_diff__deletion(void);

tests-clay/clay_main.c

@@ -200,6 +200,9 @@ static const struct clay_func _clay_cb_network_remotes[] = {
 	{"refspec_parsing", &test_network_remotes__refspec_parsing},
 	{"transform", &test_network_remotes__transform}
 };
+static const struct clay_func _clay_cb_object_commit_commitstagedfile[] = {
+    {"generate_predictable_object_ids", &test_object_commit_commitstagedfile__generate_predictable_object_ids}
+};
 static const struct clay_func _clay_cb_object_raw_chars[] = {
     {"build_valid_oid_from_raw_bytes", &test_object_raw_chars__build_valid_oid_from_raw_bytes},
 	{"find_invalid_chars_in_oid", &test_object_raw_chars__find_invalid_chars_in_oid}
@@ -246,9 +249,6 @@ static const struct clay_func _clay_cb_object_raw_type2string[] = {
 	{"convert_string_to_type", &test_object_raw_type2string__convert_string_to_type},
 	{"convert_type_to_string", &test_object_raw_type2string__convert_type_to_string}
 };
-static const struct clay_func _clay_cb_object_tree_buildfromindex[] = {
-    {"generate_predictable_object_ids", &test_object_tree_buildfromindex__generate_predictable_object_ids}
-};
 static const struct clay_func _clay_cb_object_tree_diff[] = {
     {"addition", &test_object_tree_diff__addition},
 	{"deletion", &test_object_tree_diff__deletion},
@@ -400,6 +400,12 @@ static const struct clay_suite _clay_suites[] = {
         _clay_cb_network_remotes, 4
     },
 	{
+        "object::commit::commitstagedfile",
+        {"initialize", &test_object_commit_commitstagedfile__initialize},
+        {"cleanup", &test_object_commit_commitstagedfile__cleanup},
+        _clay_cb_object_commit_commitstagedfile, 1
+    },
+	{
         "object::raw::chars",
         {NULL, NULL},
         {NULL, NULL},
@@ -448,12 +454,6 @@ static const struct clay_suite _clay_suites[] = {
         _clay_cb_object_raw_type2string, 3
     },
 	{
-        "object::tree::buildfromindex",
-        {"initialize", &test_object_tree_buildfromindex__initialize},
-        {"cleanup", &test_object_tree_buildfromindex__cleanup},
-        _clay_cb_object_tree_buildfromindex, 1
-    },
-	{
         "object::tree::diff",
         {"initialize", &test_object_tree_diff__initialize},
         {"cleanup", &test_object_tree_diff__cleanup},

tests-clay/object/tree/buildfromindex.c → tests-clay/object/commit/commitstagedfile.c

@@ -13,7 +13,7 @@ static void file_create(const char *filename, const char *content)
 	cl_git_pass(p_close(fd));
 }
 
-void test_object_tree_buildfromindex__initialize(void)
+void test_object_commit_commitstagedfile__initialize(void)
 {
 	cl_fixture("treebuilder");
 	cl_git_pass(git_repository_init(&repo, "treebuilder/", 0));
@@ -21,40 +21,98 @@ void test_object_tree_buildfromindex__initialize(void)
 	cl_assert(repo != NULL);
 }
 
-void test_object_tree_buildfromindex__cleanup(void)
+void test_object_commit_commitstagedfile__cleanup(void)
 {
 	git_repository_free(repo);
 	cl_fixture_cleanup("treebuilder");
 }
 
-void test_object_tree_buildfromindex__generate_predictable_object_ids(void)
+void test_object_commit_commitstagedfile__generate_predictable_object_ids(void)
 {
 	git_index *index;
-	git_oid blob_oid, tree_oid, expected_tree_oid;
 	git_index_entry *entry;
+	git_oid expected_blob_oid, tree_oid, expected_tree_oid, commit_oid, expected_commit_oid;
+	git_signature *signature;
+	git_tree *tree;
 
 	/*
-	 * Add a new file to the index
+	 * The test below replicates the following git scenario
+	 *
+	 * $ echo "test" > test.txt
+	 * $ git hash-object test.txt
+	 * 9daeafb9864cf43055ae93beb0afd6c7d144bfa4
+	 *
+	 * $ git add .
+	 * $ git commit -m "Initial commit"
+	 *
+	 * $ git log
+	 * commit 1fe3126578fc4eca68c193e4a3a0a14a0704624d
+	 * Author: nulltoken <emeric.fermas@gmail.com>
+	 * Date:   Wed Dec 14 08:29:03 2011 +0100
+	 *
+	 *     Initial commit
+	 *
+	 * $ git show 1fe3 --format=raw
+	 * commit 1fe3126578fc4eca68c193e4a3a0a14a0704624d
+	 * tree 2b297e643c551e76cfa1f93810c50811382f9117
+	 * author nulltoken <emeric.fermas@gmail.com> 1323847743 +0100
+	 * committer nulltoken <emeric.fermas@gmail.com> 1323847743 +0100
+	 * 
+	 *     Initial commit
+	 * 
+	 * diff --git a/test.txt b/test.txt
+	 * new file mode 100644
+	 * index 0000000..9daeafb
+	 * --- /dev/null
+	 * +++ b/test.txt
+	 * @@ -0,0 +1 @@
+	 * +test
+	 *
+	 * $ git ls-tree 2b297
+	 * 100644 blob 9daeafb9864cf43055ae93beb0afd6c7d144bfa4    test.txt
 	 */
-	cl_git_pass(git_repository_index(&index, repo));
 
+	cl_git_pass(git_oid_fromstr(&expected_commit_oid, "1fe3126578fc4eca68c193e4a3a0a14a0704624d"));
+	cl_git_pass(git_oid_fromstr(&expected_tree_oid, "2b297e643c551e76cfa1f93810c50811382f9117"));
+	cl_git_pass(git_oid_fromstr(&expected_blob_oid, "9daeafb9864cf43055ae93beb0afd6c7d144bfa4"));
+
+	/*
+	 * Add a new file to the index
+	 */
 	file_create("treebuilder/test.txt", "test\n");
+	cl_git_pass(git_repository_index(&index, repo));
 	cl_git_pass(git_index_add(index, "test.txt", 0));
 
 	entry = git_index_get(index, 0);
 
-	/* $ echo "test" | git hash-object --stdin */
-	cl_git_pass(git_oid_fromstr(&blob_oid, "9daeafb9864cf43055ae93beb0afd6c7d144bfa4"));
-
-	cl_assert(git_oid_cmp(&blob_oid, &entry->oid) == 0);
+	cl_assert(git_oid_cmp(&expected_blob_oid, &entry->oid) == 0);
 
 	/*
 	 * Build the tree from the index
 	 */
 	cl_git_pass(git_tree_create_fromindex(&tree_oid, index));
 
-	cl_git_pass(git_oid_fromstr(&expected_tree_oid, "2b297e643c551e76cfa1f93810c50811382f9117"));
 	cl_assert(git_oid_cmp(&expected_tree_oid, &tree_oid) == 0);
 
+	/*
+	 * Commit the staged file
+	 */
+	cl_git_pass(git_signature_new(&signature, "nulltoken", "emeric.fermas@gmail.com", 1323847743, 60));
+	cl_git_pass(git_tree_lookup(&tree, repo, &tree_oid));
+	cl_git_pass(git_commit_create_v(
+		&commit_oid,
+		repo,
+		"HEAD",
+		signature,
+		signature,
+		NULL,
+		"Initial commit\n",		// Note: the trailing linefeed is mandatory to replicate git behavior
+		tree,
+		0));
+
+	cl_assert(git_oid_cmp(&expected_commit_oid, &commit_oid) == 0);
+
+	git_signature_free(signature);
+	git_tree_free(tree);
 	git_index_free(index);
 }