def test_nextPoint_with_0_0(self): centralPoint = Point(0, 0) nxPoint = centralPoint.nextPoint('R8') self.assertEqual(nxPoint.x, 8) self.assertEqual(nxPoint.y, 0) nxPoint = centralPoint.nextPoint('U5') self.assertEqual(nxPoint.x, 0) self.assertEqual(nxPoint.y, 5) nxPoint = centralPoint.nextPoint('L8') self.assertEqual(nxPoint.x, -8) self.assertEqual(nxPoint.y, 0) nxPoint = centralPoint.nextPoint('D5') self.assertEqual(nxPoint.x, 0) self.assertEqual(nxPoint.y, -5)