def test_get_cell(self):
m = Map()
m.add_cell(0, 1)
m.add_cell(1, 1)
self.assertIsNotNone(m.get_cell(0, 1))
self.assertIsNone(m.get_cell(0, 0))
self.assertIsNotNone(m.get_cell(1, 1))
self.assertIsNone(m.get_cell(1, 0))
def test_add_cell(self):
m = Map()
m.add_cell(0, 0)
self.assertIsNotNone(m.cells[0])
pass