def test_setModVec_accepts_v3d(self):
unit = UnitCell(3, 3, 3)
vectors = (V3D(1, 2, 3), V3D(2, 1, 3), V3D(3, 2, 1))
unit.setModVec1(vectors[0])
unit.setModVec2(vectors[1])
unit.setModVec3(vectors[2])
for index, expected in enumerate(vectors):
self.assertEquals(vectors[index], unit.getModVec(index))
