#include "clar_libgit2.h"

#include "repository.h"

static git_repository *g_repo;

void test_object_lookup__initialize(void)

{

	g_repo = cl_git_sandbox_init("testrepo.git");

}

void test_object_lookup__cleanup(void)

{

	cl_git_sandbox_cleanup();

}

void test_object_lookup__lookup_wrong_type_returns_enotfound(void)

{

	const char *commit = "e90810b8df3e80c413d903f631643c716887138d";

	git_oid oid;

	git_object *object;

	cl_git_pass(git_oid_fromstr(&oid, commit));

	cl_assert_equal_i(

		GIT_ENOTFOUND, git_object_lookup(&object, g_repo, &oid, GIT_OBJ_TAG));

}

void test_object_lookup__lookup_nonexisting_returns_enotfound(void)

{

	const char *unknown = "deadbeefdeadbeefdeadbeefdeadbeefdeadbeef";

	git_oid oid;

	git_object *object;

	cl_git_pass(git_oid_fromstr(&oid, unknown));

	cl_assert_equal_i(

		GIT_ENOTFOUND, git_object_lookup(&object, g_repo, &oid, GIT_OBJ_ANY));

}

void test_object_lookup__lookup_wrong_type_by_abbreviated_id_returns_enotfound(void)

{

	const char *commit = "e90810b";

	git_oid oid;

	git_object *object;

	cl_git_pass(git_oid_fromstrn(&oid, commit, strlen(commit)));

	cl_assert_equal_i(

		GIT_ENOTFOUND, git_object_lookup_prefix(&object, g_repo, &oid, strlen(commit), GIT_OBJ_TAG));

}

void test_object_lookup__lookup_wrong_type_eventually_returns_enotfound(void)

{

	const char *commit = "e90810b8df3e80c413d903f631643c716887138d";

	git_oid oid;

	git_object *object;

	cl_git_pass(git_oid_fromstr(&oid, commit));

	cl_git_pass(git_object_lookup(&object, g_repo, &oid, GIT_OBJ_COMMIT));

	git_object_free(object);

	cl_assert_equal_i(

		GIT_ENOTFOUND, git_object_lookup(&object, g_repo, &oid, GIT_OBJ_TAG));

}

void test_object_lookup__lookup_corrupt_object_returns_error(void)

{

	const char *commit = "8e73b769e97678d684b809b163bebdae2911720f",

	      *file = "objects/8e/73b769e97678d684b809b163bebdae2911720f";

	git_buf path = GIT_BUF_INIT, contents = GIT_BUF_INIT;

	git_oid oid;

	git_object *object;

	size_t i;

	cl_git_pass(git_oid_fromstr(&oid, commit));

	cl_git_pass(git_buf_joinpath(&path, git_repository_path(g_repo), file));

	cl_git_pass(git_futils_readbuffer(&contents, path.ptr));

	/* Corrupt and try to read the object */

	for (i = 0; i < contents.size; i++) {

		contents.ptr[i] ^= 0x1;

		cl_git_pass(git_futils_writebuffer(&contents, path.ptr, O_RDWR, 0644));

		cl_git_fail(git_object_lookup(&object, g_repo, &oid, GIT_OBJ_COMMIT));

		contents.ptr[i] ^= 0x1;

	}

	/* Restore original content and assert we can read the object */

	cl_git_pass(git_futils_writebuffer(&contents, path.ptr, O_RDWR, 0644));

	cl_git_pass(git_object_lookup(&object, g_repo, &oid, GIT_OBJ_COMMIT));

	git_object_free(object);

	git_buf_free(&path);

	git_buf_free(&contents);

}

void test_object_lookup__lookup_object_with_wrong_hash_returns_error(void)

{

	const char *oldloose = "objects/8e/73b769e97678d684b809b163bebdae2911720f",

	      *newloose = "objects/8e/73b769e97678d684b809b163bebdae2911720e",

	      *commit = "8e73b769e97678d684b809b163bebdae2911720e";

	git_buf oldpath = GIT_BUF_INIT, newpath = GIT_BUF_INIT;

	git_object *object;

	git_oid oid;

	cl_git_pass(git_oid_fromstr(&oid, commit));

	/* Copy object to another location with wrong hash */

	cl_git_pass(git_buf_joinpath(&oldpath, git_repository_path(g_repo), oldloose));

	cl_git_pass(git_buf_joinpath(&newpath, git_repository_path(g_repo), newloose));

	cl_git_pass(git_futils_cp(oldpath.ptr, newpath.ptr, 0644));

	/* Verify that lookup fails due to a hashsum mismatch */

	cl_git_fail_with(GIT_EMISMATCH, git_object_lookup(&object, g_repo, &oid, GIT_OBJ_COMMIT));

	/* Disable verification and try again */

	cl_git_pass(git_libgit2_opts(GIT_OPT_ENABLE_STRICT_HASH_VERIFICATION, 0));

	cl_git_pass(git_object_lookup(&object, g_repo, &oid, GIT_OBJ_COMMIT));

	cl_git_pass(git_libgit2_opts(GIT_OPT_ENABLE_STRICT_HASH_VERIFICATION, 1));

	git_object_free(object);

	git_buf_free(&oldpath);

	git_buf_free(&newpath);

}