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March 10, 2017 02:37
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Python Testing 101 unittest Example: CalculatorTest Class
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from com.automationpanda.example.calc import Calculator | |
NUMBER_1 = 3.0 | |
NUMBER_2 = 2.0 | |
FAILURE = 'incorrect value' | |
class CalculatorTest(unittest.TestCase): | |
def setUp(self): | |
self.calc = Calculator() | |
def test_last_answer_init(self): | |
value = self.calc.last_answer | |
self.assertEqual(value, 0.0, FAILURE) | |
def test_add(self): | |
value = self.calc.add(NUMBER_1, NUMBER_2) | |
self.assertEqual(value, 5.0, FAILURE) | |
self.assertEqual(value, self.calc.last_answer, FAILURE) | |
def test_subtract(self): | |
value = self.calc.subtract(NUMBER_1, NUMBER_2) | |
self.assertEqual(value, 1.0, FAILURE) | |
self.assertEqual(value, self.calc.last_answer, FAILURE) | |
def test_subtract_negative(self): | |
value = self.calc.subtract(NUMBER_2, NUMBER_1) | |
self.assertEqual(value, -1.0, FAILURE) | |
self.assertEqual(value, self.calc.last_answer, FAILURE) | |
def test_multiply(self): | |
value = self.calc.multiply(NUMBER_1, NUMBER_2) | |
self.assertEqual(value, 6.0, FAILURE) | |
self.assertEqual(value, self.calc.last_answer, FAILURE) | |
def test_divide(self): | |
value = self.calc.divide(NUMBER_1, NUMBER_2) | |
self.assertEqual(value, 1.5, FAILURE) | |
self.assertEqual(value, self.calc.last_answer, FAILURE) | |
def test_divide_by_zero(self): | |
self.assertRaises(ZeroDivisionError, self.calc.divide, NUMBER_1, 0) | |
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