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test_calculator.py
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test_calculator.py
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import unittest
from calculator import addition, subtraction, multiplication, division
class TestCalculator(unittest.TestCase):
def test_addition(self):
self.assertEqual(addition(3, 3), 6)
def test_additionFloat(self):
self.assertAlmostEqual(addition(3.5, 4.24), 7.74)
def test_additionNegative(self):
self.assertAlmostEqual(addition(3.5, -3.5), 0)
def test_invalidAddition(self):
self.assertEqual(addition("bad input", 4), None)
def test_subtraction(self):
self.assertEqual(subtraction(3, 2), 1)
def test_subtractionNegative(self):
self.assertEqual(subtraction(3, -2), 5)
def test_subtractionFloat(self):
self.assertAlmostEqual(subtraction(3, -0.5), 3.5)
def test_invalidSubtraction(self):
self.assertEqual(subtraction(5, "bad input"), None)
def test_multiplication(self):
self.assertEqual(multiplication(3, 2), 6)
def test_multiplicationNegative(self):
self.assertEqual(multiplication(3, -2), -6)
def test_multiplicationFloat(self):
self.assertAlmostEqual(multiplication(3, -0.5), -1.5)
def test_invalidMultiplication(self):
self.assertEqual(multiplication(5, "bad input"), None)
def test_division(self):
self.assertEqual(division(3, 1), 3)
def test_divisionNegative(self):
self.assertEqual(division(3, -1), -3)
def test_divisionFloat(self):
self.assertAlmostEqual(division(3, -2), -1.5)
def test_invalidDivision(self):
self.assertEqual(division(5, "bad input"), None)
def test_divideByZeroDivision(self):
self.assertEqual(division(5, 0), None)
if __name__ == "__main__":
unittest.main()