import unittest


class TestMathActions(unittest.TestCase):
    def setUp(self):
        self.calc = MathActions()

    def tearDown(self):
        del self.calc

    def test_plus(self):
        result = self.calc.sum(5, 5)
        self.assertEqual(result, 10)

    def test_subt(self):
        result = self.calc.subt(6, 5)
        self.assertEqual(result, 1)

    def test_multy(self):
        result = self.calc.multy(5, 5)
        self.assertEqual(result, 25)

    def test_divide(self):
        result = self.calc.divide(6, 3)
        self.assertEqual(result, 2)

    def test_sum_is_string(self):
        result = self.calc.sum(5, '5')
        self.assertFalse(result)

    def test_subt_is_string(self):
        result = self.calc.subt(5, '5')
        self.assertFalse(result)

    def test_multy_is_string(self):
        result = self.calc.multy(5, '5')
        self.assertFalse(result)

    def test_divide_is_string(self):
        result = self.calc.divide(5, '5')
        self.assertFalse(result)


class MathActions:
    def sum(self, num1, num2):
        if type(num1) is str or type(num2) is str:
            return False
        return num1 + num2

    def subt(self, num1, num2):
        if type(num1) is str or type(num2) is str:
            return False
        return num1 - num2

    def multy(self, num1, num2):
        if type(num1) is str or type(num2) is str:
            return False
        return num1 * num2

    def divide(self, num1, num2):
        if type(num1) is str or type(num2) is str:
            return False
        return num1 / num2


# calc = MathActions()
# print calc.subt(4, 5)

if __name__ == '__main__':
    unittest.main()