hdr1, hdr2 := hdrs[i+0], hdrs[i+8]
		hdr1.Size, hdr2.Size = 0, 0
		if !reflect.DeepEqual(*hdr1, *hdr2) {
			t.Errorf("incorrect header:\ngot  %+v\nwant %+v", *hdr1, *hdr2)
		}
	}
}

func TestMergePAX(t *testing.T) {
	vectors := []struct {
		in   map[string]string
		want *Header
		ok   bool
	}{{
		in: map[string]string{
			"path":  "a/b/c",
			"uid":   "1000",
			"mtime": "1350244992.023960108",