if err != nil {
			t.Fatal(err)
		}

		data, err := io.ReadAll(tr)
		if err != nil {
			t.Fatal(err)
		}

		if hdr.Name != curfname {
			t.Fatalf("got filename %v, want %v",
				curfname, hdr.Name)
		}

		origdata := fsys[curfname].Data
		if string(data) != string(origdata) {
			t.Fatalf("got file content %v, want %v",
				data, origdata)
		}
	}
}

type WriteTest struct {
	Name   string
	Data   []byte
	Method uint16
	Mode   fs.FileMode
}

var writeTests = []WriteTest{
	{
		Name:   "foo",
		Data:   []byte("Rabbits, guinea pigs, gophers, marsupial rats, and quolls."),
		Method: Store,
		Mode:   0666,
	},
	{
		Name:   "bar",
		Data:   nil, // large data set in the test
		Method: Deflate,
		Mode:   0644,
	},
	{