.. include:: global.rst

***********************
Python Testing Notes
***********************

* Create a test_projectName.py file in the same directory

.. code-block:: python
    
    #assume project name is calc.py
    # the project has add, subtract, multiply, and divide functions
    #test_calc.py
    import unittest
    import calc

    class TestCalc(unittest.TestCase):
        
        def test_add(self):
            result = calc.add(10,5)
            self.assertEqual(result, 15)

.. code-block:: console

    python -m unittest test_calc.py

Lets setup an easier way to run the test_add

.. code-block:: python

    #test_calc.py
    # makes python3 test_calc.py work

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


.. code-block:: python

    #test_calc.py
    #more testing
    import unittest
    import calc

    class TestCalc(unittest.TestCase):
        
        def test_add(self): #add enough test methods to make the test worth it
            self.assertEqual(calc.add(10,5), 15)
            self.assertEqual(calc.add(-1,1), 0)
            self.assertEqual(calc.add(-1,-1), -2)


        def test_subtract(self): #add enough test methods to make the test worth it
            self.assertEqual(calc.add(10,5), 5)
            self.assertEqual(calc.add(-1,1), -2)
            self.assertEqual(calc.add(-1,-1), 0)
        
        def test_multiply(self): #add enough test methods to make the test worth it
            self.assertEqual(calc.add(10,5), 50)
            self.assertEqual(calc.add(-1,1), -1)
            self.assertEqual(calc.add(-1,-1), 1)

        def test_divide(self): #add enough test methods to make the test worth it
            self.assertEqual(calc.add(10,5), 2)
            self.assertEqual(calc.add(-1,1), -1)
            self.assertEqual(calc.add(-1,-1), 1)

        # 4 tests


Find yourself repeating code?

.. code-block:: python

    import unittest


    class TestEmployee(unitest.TestCase):
        def setUp(self):
            pass
            self.emp_1 = Employee ("Corey", "Shaefer", 500000) # the repeated code
        
        def tearDown(self):
            pass