p1 := newPoint().Double(p)
	p2 := newPoint().Add(p, p)
	p3, err := newPoint().ScalarMult(p, two)
	fatalIfErr(t, err)
	p4, err := newPoint().ScalarBaseMult(two)
	fatalIfErr(t, err)
	p5, err := newPoint().ScalarMult(p, nPlusTwo)
	fatalIfErr(t, err)
	p6, err := newPoint().ScalarBaseMult(nPlusTwo)
	fatalIfErr(t, err)

	if !bytes.Equal(p1.Bytes(), p2.Bytes()) {
		t.Error("P+P != 2*P")
	}