}
			if test.wantErr && !sawErr {
				t.Error("succeeded but want error")
			} else if !test.wantErr && sawErr {
				t.Error("unexpected error")
			}
			if test.want != nil && !reflect.DeepEqual(files, test.want) {
				t.Errorf("got %v want %v", files, test.want)
			}
		})
	}
}

func TestFSModTime(t *testing.T) {
	t.Parallel()
	z, err := OpenReader("testdata/subdir.zip")

		// Remove it if present.
		fname = strings.TrimPrefix(fname, "cmd/cgo/internal/")
		if !strings.HasPrefix(fname, "test.") {
			continue
		}
		got = append(got, fname)
	}
	if !reflect.DeepEqual(want, got) {
		t.Errorf("incorrect backtrace:\nwant:\t%v\ngot:\t%v", want, got)
	}

			}

			for i, hdr := range hdrs {
				if i >= len(v.headers) {
					t.Fatalf("entry %d: unexpected header:\ngot %+v", i, *hdr)
				}
				if !reflect.DeepEqual(*hdr, *v.headers[i]) {
					t.Fatalf("entry %d: incorrect header:\ngot  %+v\nwant %+v", i, *hdr, *v.headers[i])
				}
			}
			if len(hdrs) != len(v.headers) {

	case TypeXGlobalHeader:
		h2 := Header{Name: h.Name, Typeflag: h.Typeflag, Xattrs: h.Xattrs, PAXRecords: h.PAXRecords, Format: h.Format}
		if !reflect.DeepEqual(h, h2) {
			return FormatUnknown, nil, headerError{"only PAXRecords should be set for TypeXGlobalHeader"}
		}
		whyOnlyPAX = "only PAX supports TypeXGlobalHeader"
		format.mayOnlyBe(FormatPAX)
	}

		s := Join(a, []byte(tt.sep))
		if string(s) != tt.s {
			t.Errorf(`Join(Split(%q, %q, %d), %q) = %q`, tt.s, tt.sep, tt.n, tt.sep, s)
		}
		if tt.n < 0 {
			b := Split([]byte(tt.s), []byte(tt.sep))
			if !reflect.DeepEqual(a, b) {
				t.Errorf("Split disagrees withSplitN(%q, %q, %d) = %v; want %v", tt.s, tt.sep, tt.n, b, a)
			}
		}
		if len(a) > 0 {
			in, out := a[0], s
			if cap(in) == cap(out) && &in[:1][0] == &out[:1][0] {

	}
	f.pos += s
	f.ops = f.ops[1:]
	return f.pos, nil
}

func equalSparseEntries(x, y []sparseEntry) bool {
	return (len(x) == 0 && len(y) == 0) || reflect.DeepEqual(x, y)
}

func TestSparseEntries(t *testing.T) {
	vectors := []struct {
		in   []sparseEntry
		size int64

		wantValid    bool          // Result of validateSparseEntries

pkg reflect, const UnsafePointer Kind
pkg reflect, func Append(Value, ...Value) Value
pkg reflect, func AppendSlice(Value, Value) Value
pkg reflect, func Copy(Value, Value) int
pkg reflect, func DeepEqual(interface{}, interface{}) bool
pkg reflect, func Indirect(Value) Value
pkg reflect, func MakeChan(Type, int) Value
pkg reflect, func MakeMap(Type) Value
pkg reflect, func MakeSlice(Type, int, int) Value

		t.Fatal(err)
	}
	// Test that we can get the xattrs back out of the archive.
	reader := NewReader(&buf)
	hdr, err = reader.Next()
	if err != nil {
		t.Fatal(err)
	}
	if !reflect.DeepEqual(hdr.Xattrs, xattrs) {
		t.Fatalf("xattrs did not survive round trip: got %+v, want %+v",
			hdr.Xattrs, xattrs)
	}
}

func TestPaxHeadersSorted(t *testing.T) {
	fileinfo, err := os.Stat("testdata/small.txt")