def testGR(self):
"basic equalities"
r1 = R(1)
r2 = R(2)
r3 = R(3)
r7 = R(7)
g1 = G(1)
g2 = G(2)
g3 = G(3)
g7 = G(7)
self.assertEqual(str(R(r1)), str(g1))
self.assertEqual(str(R(r1/r3)), str(g1/g3))
self.assertEqual(str(R(r2/r3)), str(g2/g3))
self.assertEqual(str(R(R.mul(r2, r3))), str(G.mul(g2, g3)))
self.assertEqual(str(R(R.div(r2, r3))), str(G.div(g2, g3)))
self.assertEqual(str(R(R.muldiv(r2, r3, r7))), str(G.muldiv(g2, g3, g7)))
def testMulDiv(self):
"rational muldiv is the same as multiply followed by divide"
self.assertEqual(R.muldiv(self.f13, self.f15, self.f17), self.f13*self.f15/self.f17)
