fsys := fstest.MapFS{}
	for _, wt := range tests {
		fsys[wt.Name] = &fstest.MapFile{
			Data: wt.Data,
			Mode: wt.Mode,
		}
	}
	return fsys
}

func TestWriterAddFS(t *testing.T) {
	buf := new(bytes.Buffer)
	w := NewWriter(buf)
	tests := []WriteTest{
		{Name: "emptyfolder", Mode: 0o755 | os.ModeDir},
		{Name: "file.go", Data: []byte("hello"), Mode: 0644},

			}
		}

		if got := bb.String(); got != wantStr {
			t.Fatalf("test %d, String() = %q, want %q", i, got, wantStr)
		}
	}
}

func TestWriterAddFS(t *testing.T) {
	fsys := fstest.MapFS{
		"emptyfolder":          {Mode: 0o755 | os.ModeDir},
		"file.go":              {Data: []byte("hello")},
		"subfolder/another.go": {Data: []byte("world")},