zw := gzip.NewWriter(&buf)
	if _, err := zw.Write(b); err != nil {
		t.Fatal(err)
	}

	if err := zw.Close(); err != nil {
		t.Fatal(err)
	}

	return buf.Bytes()
}

func TestWasmHTTPFetchCompressedOrTarFile(t *testing.T) {
	wasmBinary := append(wasmMagicNumber, 0x00, 0x00, 0x00, 0x00)
	tarball := createTar(t, wasmBinary)
	gz := createGZ(t, wasmBinary)
	gzTarball := createGZ(t, tarball)
	cases := []struct {