go/src/internal/zstd/window_test.go

func makeSequence(start, n int) (seq []byte) { … }

func TestWindow(t *testing.T) { … }

// testWindow tests window by saving three sequences of bytes to it.
// Third sequence tests read offset that can become non-zero only after second save.
func testWindow(t *testing.T, size int, a, b, c []byte) { … }