}
}

type appendMarshaler interface {
	encoding.TextMarshaler
	AppendTo([]byte) []byte
}

// checkTextMarshalMatchesAppendTo checks that x's MarshalText matches x's AppendTo.
func checkTextMarshalMatchesAppendTo(t *testing.T, x appendMarshaler) {
	buf, err := x.MarshalText()
	if err != nil {
		t.Fatal(err)
	}

	buf2 := make([]byte, 0, len(buf))