tests: don't leak objects

If we don't create any leaks in the tests, we can use them to search
for leaks in the implementation.

Signed-off-by: Carlos Martín Nieto <cmn@elego.de>

tests/t04-commit.c

@@ -368,7 +368,7 @@ BEGIN_TEST(details0, "query the details on a parsed commit")
 		const char *message, *message_short;
 		git_time_t commit_time;
 		unsigned int parents, p;
-		git_commit *parent;
+		git_commit *parent = NULL, *old_parent = NULL;
 
 		git_oid_mkstr(&id, commit_ids[i]);
 
@@ -390,11 +390,19 @@ BEGIN_TEST(details0, "query the details on a parsed commit")
 		must_be_true(commit_time > 0);
 		must_be_true(parents <= 2);
 		for (p = 0;p < parents;p++) {
+			if (old_parent != NULL)
+				git_commit_close(old_parent);
+
+			old_parent = parent;
 			must_pass(git_commit_parent(&parent, commit, p));
 			must_be_true(parent != NULL);
 			must_be_true(git_commit_author(parent) != NULL); // is it really a commit?
 		}
+		git_commit_close(old_parent);
+		git_commit_close(parent);
+
 		must_fail(git_commit_parent(&parent, commit, parents));
+		git_commit_close(commit);
 	}
 
 	git_repository_free(repo);
@@ -462,6 +470,7 @@ BEGIN_TEST(write0, "write a new commit object from memory to disk")
 
 	must_pass(remove_loose_object(REPOSITORY_FOLDER, (git_object *)commit));
 
+	git_commit_close(commit);
 	git_repository_free(repo);
 END_TEST
 

tests/t09-tree.c

@@ -82,6 +82,7 @@ BEGIN_TEST(read0, "acces randomly the entries on a loaded tree")
 	must_be_true(git_tree_entry_byindex(tree, 3) == NULL);
 	must_be_true(git_tree_entry_byindex(tree, -1) == NULL);
 
+	git_tree_close(tree);
 	git_repository_free(repo);
 END_TEST
 
@@ -102,7 +103,9 @@ BEGIN_TEST(read1, "read a tree from the repository")
 
 	/* GH-86: git_object_lookup() should also check the type if the object comes from the cache */
 	must_be_true(git_object_lookup(&obj, repo, &id, GIT_OBJ_TREE) == 0);
+	git_object_close(obj);
 	must_be_true(git_object_lookup(&obj, repo, &id, GIT_OBJ_BLOB) == GIT_EINVALIDTYPE);
+	git_object_close(obj);
 
 	entry = git_tree_entry_byname(tree, "README");
 	must_be_true(entry != NULL);
@@ -111,6 +114,8 @@ BEGIN_TEST(read1, "read a tree from the repository")
 
 	must_pass(git_tree_entry_2object(&obj, repo, entry));
 
+	git_object_close(obj);
+	git_tree_close(tree);
 	git_repository_free(repo);
 END_TEST
 
@@ -148,6 +153,9 @@ BEGIN_TEST(write2, "write a tree from a memory")
 	must_pass(git_treebuilder_write(&rid,repo,builder));
 
 	must_be_true(git_oid_cmp(&rid, &id2) == 0);
+
+	git_treebuilder_free(builder);
+	git_tree_close(tree);
 	close_temp_repo(repo);
 END_TEST
 

tests/t10-refs.c

@@ -51,6 +51,7 @@ BEGIN_TEST(readtag0, "lookup a loose tag reference")
 	git__joinpath(ref_name_from_tag_name, GIT_REFS_TAGS_DIR, git_tag_name((git_tag *)object));
 	must_be_true(strcmp(ref_name_from_tag_name, loose_tag_ref_name) == 0);
 
+	git_object_close(object);
 	git_repository_free(repo);
 END_TEST
 
@@ -91,6 +92,7 @@ BEGIN_TEST(readsym0, "lookup a symbolic reference")
 	git_oid_mkstr(&id, current_master_tip);
 	must_be_true(git_oid_cmp(&id, git_object_id(object)) == 0);
 
+	git_object_close(object);
 	git_repository_free(repo);
 END_TEST
 
@@ -117,6 +119,7 @@ BEGIN_TEST(readsym1, "lookup a nested symbolic reference")
 	git_oid_mkstr(&id, current_master_tip);
 	must_be_true(git_oid_cmp(&id, git_object_id(object)) == 0);
 
+	git_object_close(object);
 	git_repository_free(repo);
 END_TEST
 
@@ -175,6 +178,7 @@ BEGIN_TEST(readpacked0, "lookup a packed reference")
 	must_be_true(object != NULL);
 	must_be_true(git_object_type(object) == GIT_OBJ_COMMIT);
 
+	git_object_close(object);
 	git_repository_free(repo);
 END_TEST