wantSize: 01234,
	}, {
		input: makeInput(FormatGNU, "1234",
			append(makeSparseStrings(sparseDatas{{0, 0}, {1, 1}}), []string{"", "blah"}...)...),
		wantMap:  sparseDatas{{0, 0}, {1, 1}},
		wantSize: 01234,
	}, {
		input: makeInput(FormatGNU, "3333",
			makeSparseStrings(sparseDatas{{0, 1}, {2, 1}, {4, 1}, {6, 1}})...),
		wantMap:  sparseDatas{{0, 1}, {2, 1}, {4, 1}, {6, 1}},
		wantSize: 03333,
	}, {

func TestWriterDirAttributes(t *testing.T) {
	var buf bytes.Buffer
	w := NewWriter(&buf)
	if _, err := w.CreateHeader(&FileHeader{
		Name:               "dir/",
		Method:             Deflate,
		CompressedSize64:   1234,
		UncompressedSize64: 5678,
	}); err != nil {
		t.Fatal(err)
	}
	if err := w.Close(); err != nil {
		t.Fatal(err)
	}
	b := buf.Bytes()

	var sig [4]byte

	var buf bytes.Buffer
	for i := 0; i < 4; i++ {
		b := buf.AvailableBuffer()
		b = strconv.AppendInt(b, int64(i), 10)
		b = append(b, ' ')
		buf.Write(b)
	}
	os.Stdout.Write(buf.Bytes())
	// Output: 0 1 2 3
}

func ExampleBuffer_Cap() {
	buf1 := bytes.NewBuffer(make([]byte, 10))
	buf2 := bytes.NewBuffer(make([]byte, 0, 10))
	fmt.Println(buf1.Cap())
	fmt.Println(buf2.Cap())
	// Output:
	// 10
	// 10
}

	PLHA 1234(R1), $0, R3                   // 06000000a86104d2
	PLHZ 1234(R1), $0, R3                   // 06000000a06104d2
	PLQ 1234(R1), $0, R4                    // 04000000e08104d2
	PLWA 1234(R1), $0, R3                   // 04000000a46104d2
	PLWZ 1234567890(R4), $0, R3             // 06004996806402d2
	PLWZ 1234567890(R0), $1, R3             // 06104996806002d2
	PLXSD 1234(R1), $0, V1                  // 04000000a82104d2