dataScannerCompactAtFolders      = dataScannerCompactAtChildren / 4 // Compact when this many subfolders in a single folder.
	dataScannerForceCompactAtFolders = 1_000_000                        // Compact when this many subfolders in a single folder (even top level).
	dataScannerStartDelay            = 1 * time.Minute                  // Time to wait on startup and between cycles.

func TestWriterAddFS(t *testing.T) {
	buf := new(bytes.Buffer)
	w := NewWriter(buf)
	tests := []WriteTest{
		{
			Name: "file.go",
			Data: []byte("hello"),
			Mode: 0644,
		},
		{
			Name: "subfolder/another.go",
			Data: []byte("world"),
			Mode: 0644,
		},
	}
	err := w.AddFS(writeTestsToFS(tests))
	if err != nil {
		t.Fatal(err)
	}

	if err := w.Close(); err != nil {
		t.Fatal(err)

			t.Fatalf("test %d, String() = %q, want %q", i, got, wantStr)
		}
	}
}

func TestWriterAddFS(t *testing.T) {
	fsys := fstest.MapFS{
		"file.go":              {Data: []byte("hello")},
		"subfolder/another.go": {Data: []byte("world")},
	}
	var buf bytes.Buffer
	tw := NewWriter(&buf)
	if err := tw.AddFS(fsys); err != nil {
		t.Fatal(err)
	}