thodg/libgit2/tests/odb/loose.c

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• Hash : e6ed0d2f
  Author :
  Date : 2016-12-13T11:31:38
  

  odb_loose: fsync tests Introduce a simple counter that `p_fsync` implements. This is useful for ensuring that `p_fsync` is called when we expect it to be, for example when we have enabled an odb backend to perform `fsync`s when writing objects.

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• tests/odb/loose.c

• #include "clar_libgit2.h"
  #include "odb.h"
  #include "git2/odb_backend.h"
  #include "posix.h"
  #include "loose_data.h"
  
  #ifdef __ANDROID_API__
  # define S_IREAD        S_IRUSR
  # define S_IWRITE       S_IWUSR
  #endif
  
  static void write_object_files(object_data *d)
  {
  	int fd;
  
  	if (p_mkdir(d->dir, GIT_OBJECT_DIR_MODE) < 0)
  		cl_assert(errno == EEXIST);
  
  	cl_assert((fd = p_creat(d->file, S_IREAD | S_IWRITE)) >= 0);
  	cl_must_pass(p_write(fd, d->bytes, d->blen));
  
  	p_close(fd);
  }
  
  static void cmp_objects(git_rawobj *o, object_data *d)
  {
  	cl_assert(o->type == git_object_string2type(d->type));
  	cl_assert(o->len == d->dlen);
  
  	if (o->len > 0)
  		cl_assert(memcmp(o->data, d->data, o->len) == 0);
  }
  
  static void test_read_object(object_data *data)
  {
      git_oid id;
      git_odb_object *obj;
  	git_odb *odb;
  	git_rawobj tmp;
  
      write_object_files(data);
  
      cl_git_pass(git_odb_open(&odb, "test-objects"));
      cl_git_pass(git_oid_fromstr(&id, data->id));
      cl_git_pass(git_odb_read(&obj, odb, &id));
  
  	tmp.data = obj->buffer;
  	tmp.len = obj->cached.size;
  	tmp.type = obj->cached.type;
  
      cmp_objects(&tmp, data);
  
      git_odb_object_free(obj);
  	git_odb_free(odb);
  }
  
  void test_odb_loose__initialize(void)
  {
  	p_fsync__cnt = 0;
  	cl_must_pass(p_mkdir("test-objects", GIT_OBJECT_DIR_MODE));
  }
  
  void test_odb_loose__cleanup(void)
  {
  	cl_git_pass(git_libgit2_opts(GIT_OPT_ENABLE_SYNCHRONIZED_OBJECT_CREATION, 0));
  	cl_fixture_cleanup("test-objects");
  }
  
  void test_odb_loose__exists(void)
  {
  	git_oid id, id2;
  	git_odb *odb;
  
  	write_object_files(&one);
  	cl_git_pass(git_odb_open(&odb, "test-objects"));
  
  	cl_git_pass(git_oid_fromstr(&id, one.id));
  	cl_assert(git_odb_exists(odb, &id));
  
  	cl_git_pass(git_oid_fromstrp(&id, "8b137891"));
  	cl_git_pass(git_odb_exists_prefix(&id2, odb, &id, 8));
  	cl_assert_equal_i(0, git_oid_streq(&id2, one.id));
  
  	/* Test for a missing object */
  	cl_git_pass(git_oid_fromstr(&id, "8b137891791fe96927ad78e64b0aad7bded08baa"));
  	cl_assert(!git_odb_exists(odb, &id));
  
  	cl_git_pass(git_oid_fromstrp(&id, "8b13789a"));
  	cl_assert_equal_i(GIT_ENOTFOUND, git_odb_exists_prefix(&id2, odb, &id, 8));
  
  	git_odb_free(odb);
  }
  
  void test_odb_loose__simple_reads(void)
  {
  	test_read_object(&commit);
  	test_read_object(&tree);
  	test_read_object(&tag);
  	test_read_object(&zero);
  	test_read_object(&one);
  	test_read_object(&two);
  	test_read_object(&some);
  }
  
  void test_write_object_permission(
  	mode_t dir_mode, mode_t file_mode,
  	mode_t expected_dir_mode, mode_t expected_file_mode)
  {
  	git_odb *odb;
  	git_odb_backend *backend;
  	git_oid oid;
  	struct stat statbuf;
  	mode_t mask, os_mask;
  
  	/* Windows does not return group/user bits from stat,
  	* files are never executable.
  	*/
  #ifdef GIT_WIN32
  	os_mask = 0600;
  #else
  	os_mask = 0777;
  #endif
  
  	mask = p_umask(0);
  	p_umask(mask);
  
  	cl_git_pass(git_odb_new(&odb));
  	cl_git_pass(git_odb_backend_loose(&backend, "test-objects", -1, 0, dir_mode, file_mode));
  	cl_git_pass(git_odb_add_backend(odb, backend, 1));
  	cl_git_pass(git_odb_write(&oid, odb, "Test data\n", 10, GIT_OBJ_BLOB));
  
  	cl_git_pass(p_stat("test-objects/67", &statbuf));
  	cl_assert_equal_i(statbuf.st_mode & os_mask, (expected_dir_mode & ~mask) & os_mask);
  
  	cl_git_pass(p_stat("test-objects/67/b808feb36201507a77f85e6d898f0a2836e4a5", &statbuf));
  	cl_assert_equal_i(statbuf.st_mode & os_mask, (expected_file_mode & ~mask) & os_mask);
  
  	git_odb_free(odb);
  }
  
  void test_odb_loose__permissions_standard(void)
  {
  	test_write_object_permission(0, 0, GIT_OBJECT_DIR_MODE, GIT_OBJECT_FILE_MODE);
  }
  
  void test_odb_loose_permissions_readonly(void)
  {
  	test_write_object_permission(0777, 0444, 0777, 0444);
  }
  
  void test_odb_loose__permissions_readwrite(void)
  {
  	test_write_object_permission(0777, 0666, 0777, 0666);
  }
  
  static void write_object_to_loose_odb(int fsync)
  {
  	git_odb *odb;
  	git_odb_backend *backend;
  	git_oid oid;
  
  	cl_git_pass(git_odb_new(&odb));
  	cl_git_pass(git_odb_backend_loose(&backend, "test-objects", -1, fsync, 0777, 0666));
  	cl_git_pass(git_odb_add_backend(odb, backend, 1));
  	cl_git_pass(git_odb_write(&oid, odb, "Test data\n", 10, GIT_OBJ_BLOB));
  	git_odb_free(odb);
  }
  
  void test_odb_loose__does_not_fsync_by_default(void)
  {
  	write_object_to_loose_odb(0);
  	cl_assert_equal_sz(0, p_fsync__cnt);
  }
  
  void test_odb_loose__fsync_obeys_odb_option(void)
  {
  	write_object_to_loose_odb(1);
  	cl_assert(p_fsync__cnt > 0);
  }
  
  void test_odb_loose__fsync_obeys_global_setting(void)
  {
  	cl_git_pass(git_libgit2_opts(GIT_OPT_ENABLE_SYNCHRONIZED_OBJECT_CREATION, 1));
  	write_object_to_loose_odb(0);
  	cl_assert(p_fsync__cnt > 0);
  }
  

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