def test_rotate_translate(self):
c = Coordinates()
c.translate(0, 10)
self.assertEqual(c.x, 0)
self.assertEqual(c.y, 10)
c.reset()
c.rotate(math.pi / 2)
c.translate(0, 10)
self.assertEqual(c.x, -10)
self.assertEqual(c.y, 0)
def test_reset(self):
c = Coordinates()
pos = c.pos
self.assertEqual(pos[0], 0)
self.assertEqual(pos[1], 0)
c.translate(1, 2)
pos = c.pos
self.assertNotEqual(pos[0], 0)
self.assertNotEqual(pos[1], 0)
c.reset()
pos = c.pos
self.assertEqual(pos[0], 0)
self.assertEqual(pos[1], 0)