def test_is_alive_at_not_dependent_on_location_instance(self):
coordinates = (0, 0)
self.location = Location(*coordinates)
world = World()
world.set_living_at(self.location)
location = Location(*coordinates)
self.assertTrue(world.is_alive_at(location))
def test_a_cell_can_be_added_to_the_world(self):
world = World()
world.set_living_at(self.location)
self.assertTrue(world.is_alive_at(self.location))
def test_a_cell_can_be_set_dead_at_location_if_never_set_living(self):
world = World()
world.set_dead_at(self.location)
self.assertFalse(world.is_alive_at(self.location))
def test_a_new_worlds_cell_is_not_alive(self):
world = World()
self.assertFalse(world.is_alive_at(self.location))
