}

		if result.String() != c.content {
			t.Errorf("Case %d failed: expected %v result %v", i, c.content, result.String())
		}
	}
}

type tester interface {
	Fatal(...interface{})
}

func openTestFile(t tester, file string) []byte {
	f, err := os.ReadFile("testdata/testdata.zip")
	if err != nil {
		t.Fatal(err)
	}
	z, err := zip.NewReader(bytes.NewReader(f), int64(len(f)))
	if err != nil {
		t.Fatal(err)
	}