def test_translate_decreases_x_for_dir_of_left(self):
ant = AntGrid()
ant.x, ant.y = 0, 0
ant.translate("left")
self.assertEqual(-1, ant.x)
self.assertEqual(0, ant.y)
def test_translate_decreases_y_for_dir_of_down(self):
ant = AntGrid()
ant.x, ant.y = 0, 0
ant.translate("down")
self.assertEqual(0, ant.x)
self.assertEqual(-1, ant.y)
def test_translate_increases_x_for_dir_of_right(self):
ant = AntGrid()
ant.x, ant.y = 0, 0
ant.translate("right")
self.assertEqual(1, ant.x)
self.assertEqual(0, ant.y)
def test_translate_increases_y_for_dir_of_up(self):
ant = AntGrid()
ant.x, ant.y = 0, 0
ant.translate("up")
self.assertEqual(0, ant.x)
self.assertEqual(1, ant.y)
def test_translate_decreases_x_for_dir_of_left(self):
ant = AntGrid()
ant.x, ant.y = 0, 0
ant.translate("left")
self.assertEqual(-1, ant.x)
self.assertEqual(0, ant.y)
def test_translate_increases_x_for_dir_of_right(self):
ant = AntGrid()
ant.x, ant.y = 0, 0
ant.translate("right")
self.assertEqual(1, ant.x)
self.assertEqual(0, ant.y)
def test_translate_decreases_y_for_dir_of_down(self):
ant = AntGrid()
ant.x, ant.y = 0, 0
ant.translate("down")
self.assertEqual(0, ant.x)
self.assertEqual(-1, ant.y)
def test_translate_increases_y_for_dir_of_up(self):
ant = AntGrid()
ant.x, ant.y = 0, 0
ant.translate("up")
self.assertEqual(0, ant.x)
self.assertEqual(1, ant.y)
