},
}

var sysValue int

type readFileOnly struct{ ReadFileFS }

func (readFileOnly) Open(name string) (File, error) { return nil, ErrNotExist }

type openOnly struct{ FS }

func TestReadFile(t *testing.T) {
	// Test that ReadFile uses the method when present.
	data, err := ReadFile(readFileOnly{testFsys}, "hello.txt")
	if string(data) != "hello, world" || err != nil {

	if err != nil {
		t.Fatalf("Stat %q (looking for size %d): %s", path, size, err)
	}
	if dir.Size() != size {
		t.Errorf("Stat %q: size %d want %d", path, dir.Size(), size)
	}
}

func TestReadFile(t *testing.T) {
	filename := "rumpelstilzchen"
	contents, err := ReadFile(filename)
	if err == nil {
		t.Fatalf("ReadFile %s: error expected, none found", filename)
	}

	filename = "ioutil_test.go"

	dir, err := Stat(path)
	if err != nil {
		t.Fatalf("Stat %q (looking for size %d): %s", path, size, err)
	}
	if dir.Size() != size {
		t.Errorf("Stat %q: size %d want %d", path, dir.Size(), size)
	}
}

func TestReadFile(t *testing.T) {
	t.Parallel()

	filename := "rumpelstilzchen"
	contents, err := ReadFile(filename)
	if err == nil {
		t.Fatalf("ReadFile %s: error expected, none found", filename)
	}

// TestReadFile confirms that ReadFile can read build information from binaries
// on supported target platforms. It builds a trivial binary on the current
// platforms (or all platforms if -all is set) in various configurations and
// checks that build information can or cannot be read.
func TestReadFile(t *testing.T) {
	if testing.Short() {

	expectedID = "abcdefghijklmnopqrstuvwxyz.1234567890123456789012345678901234567890123456789012345678901234"
	newID      = "bcdefghijklmnopqrstuvwxyza.2345678901234567890123456789012345678901234567890123456789012341"
)

func TestReadFile(t *testing.T) {
	f, err := os.CreateTemp("", "buildid-test-")
	if err != nil {
		t.Fatal(err)
	}
	tmp := f.Name()
	defer os.Remove(tmp)
	f.Close()

			info := *tt.info
			tt.info = &info
			o := *info.Origin
			info.Origin = &o
			o.URL = localGitURL(t)
			t.Run(path.Base(tt.repo), runTest(tt))
		}
	}
}

func TestReadFile(t *testing.T) {
	t.Parallel()

	type readFileTest struct {
		repo string
		rev  string
		file string
		err  string
		data string
	}
	runTest := func(tt readFileTest) func(*testing.T) {

  std::unique_ptr<WritableFile> same_file;
  status = env_->NewAppendableFile(new_path, &same_file);
  EXPECT_PRED2(UnimplementedOrReturnsCode, status, Code::FAILED_PRECONDITION);
}

TEST_P(ModularFileSystemTest, TestReadFile) {
  const std::string filepath = GetURIForPath("a_file");
  std::unique_ptr<RandomAccessFile> new_file;
  Status status = env_->NewRandomAccessFile(filepath, &new_file);