+
+ def test_num_parameters(self):
+ self.assertEqual(self.square1.num_parameters(), 2)
+ self.assertEqual(self.empty.num_parameters(), 0)
+ self.assertEqual(self.universe.num_parameters(), 0)
+
+ def test_involves_dims(self):
+ self.assertTrue(self.square1.involves_dims(symbols('x y')))
+ self.assertFalse(self.empty.involves_dims(symbols('x')))
+ self.assertFalse(self.universe.involves_dims(symbols('x')))