def test_drop_dims(self):
self.assertEqual(self.square1.drop_dims('x'), self.dropped)
self.assertEqual(self.square1.drop_dims('x y'), self.universe)
self.assertEqual(self.universe.drop_dims(' '), self.universe)
self.assertEqual(self.empty.drop_dims(' '), Empty)
def test_drop_dims(self):
self.assertEqual(self.square1.drop_dims('x'), self.dropped)
self.assertEqual(self.square1.drop_dims('x y'), self.universe)
self.assertEqual(self.universe.drop_dims(' '), self.universe)
self.assertEqual(self.empty.drop_dims(' '), Empty)