def test_subtract_three_operands(self):
     result = Builtins.subtract([3, 2, 1])
     self.assertEqual(0, result)
 def test_subtract_one_operand_negation(self):
     result = Builtins.subtract([1])
     self.assertEqual(-1, result)
 def test_subtract_two_operands(self):
     result = Builtins.subtract([3, 2])
     self.assertEqual(1, result)