Tests a model provided by the constructor
(t *testing.T, N int, model func() Model)
| 8 | |
| 9 | // Tests a model provided by the constructor |
| 10 | func WriterReaderTest(t *testing.T, N int, model func() Model) { |
| 11 | data := make([]byte, N) |
| 12 | for i := range data { |
| 13 | data[i] = byte(rand.Int()) |
| 14 | } |
| 15 | |
| 16 | w := NewWriter(model()) |
| 17 | n, err := w.Write(data) |
| 18 | if n != N || err != nil { |
| 19 | t.Fatalf("failed write (%v,%v): %v", n, N, err) |
| 20 | } |
| 21 | |
| 22 | if err := w.Close(); err != nil { |
| 23 | t.Fatalf("failed close: %v", err) |
| 24 | } |
| 25 | |
| 26 | got := make([]byte, N) |
| 27 | |
| 28 | r := NewReader(w.Bytes(), model()) |
| 29 | n, err = r.Read(got) |
| 30 | if n != N || err != nil { |
| 31 | t.Fatalf("failed read (%v,%v): %v", n, N, err) |
| 32 | } |
| 33 | |
| 34 | if !bytes.Equal(got, data) { |
| 35 | t.Fatalf("different content: %v, %v", got, data) |
| 36 | } |
| 37 | } |
| 38 | |
| 39 | func TestShiftWriter(t *testing.T) { |
| 40 | WriterReaderTest(t, 3, func() Model { return &Shift{Prob(0.5), 3} }) |