}
	}
}

func TestFormatDirEntry(t *testing.T) {
	for i, test := range formatTests {
		got := FormatDirEntry(&test.input)
		if got != test.wantDirEntry {
			t.Errorf("%d: FormatDirEntry(%#v) = %q, want %q", i, test.input, got, test.wantDirEntry)
		}
	}

	if info.IsDir() {
		b = append(b, '/')
	}

	return string(b)
}

// FormatDirEntry returns a formatted version of dir for human readability.
// Implementations of [DirEntry] can call this from a String method.
// The outputs for a directory named subdir and a file named hello.go are:
//
//	d subdir/
//	- hello.go
func FormatDirEntry(dir DirEntry) string {
	name := dir.Name()
	b := make([]byte, 0, 5+len(name))

func (de dirEntry) Type() FileMode          { return de.fs.Mode().Type() }
func (de dirEntry) Info() (FileInfo, error) { return de.fs, nil }

func (de dirEntry) String() string {
	return fs.FormatDirEntry(de)

}

func (di dirInfo) Info() (FileInfo, error) {
	return di.fileInfo, nil
}

func (di dirInfo) Name() string {
	return di.fileInfo.Name()
}

func (di dirInfo) String() string {
	return FormatDirEntry(di)
}

// FileInfoToDirEntry returns a [DirEntry] that returns information from info.
// If info is nil, FileInfoToDirEntry returns nil.
func FileInfoToDirEntry(info FileInfo) DirEntry {
	if info == nil {

func (de dirEntry) Type() FileMode          { return de.fs.Mode().Type() }
func (de dirEntry) Info() (FileInfo, error) { return de.fs, nil }

func (de dirEntry) String() string {
	return fs.FormatDirEntry(de)