{1, 2, nil, io.ErrShortWrite},
	{1, 1, nil, nil},
	{0, 1, io.ErrClosedPipe, io.ErrClosedPipe},
	{1, 2, io.ErrClosedPipe, io.ErrClosedPipe},
	{1, 1, io.ErrClosedPipe, io.ErrClosedPipe},
}

func TestWriteErrors(t *testing.T) {
	for _, w := range errorWriterTests {
		buf := NewWriter(w)
		_, e := buf.Write([]byte("hello world"))
		if e != nil {
			t.Errorf("Write hello to %v: %v", w, e)
			continue
		}