Testing

Copy testing.py to your practicals project, then follow the TODO instructions in it, taking note that the code shows you examples to learn form.

Fix the repeat_string function so that it passes the assert test.

Don't change the test! The failing test shows that the function is broken; fix the function.

Write at least two assert statements to show if Car sets the fuel correctly.

Uncomment the doctest.runmod() line to see how the doctests run.

Note: PyCharm might detect your tests and automatically run your program in doctest mode.

Fix the failing is_long_word function.

Write and test (using doctest) a function to format a phrase as a sentence - starting with a capital and ending with a single full stop. See the comments for how to do this step by step, taking note that you should write your tests _ before_ your code. E.g., the function should change "hello" into "Hello."

""" CP1404/CP5632 Practical Testing demo using assert and doctest """ import doctest from prac_06.car import Car def repeat_string(s, n): """Repeat string s, n times, with spaces in between.""" return s * n def is_long_word(word, length=5): """ Determine if the word is as long or longer than the length passed in >>> is_long_word("not") False >>> is_long_word("supercalifrag") True >>> is_long_word("Python", 6) True """ return len(word) > length def run_tests(): """Run the tests on the functions.""" # assert test with no message - used to see if the function works properly assert repeat_string("Python", 1) == "Python" # the test below should fail assert repeat_string("hi", 2) == "hi hi" # TODO: 1. fix the repeat_string function above so that it passes the failing test # Hint: "-".join(["yo", "yo"] -> "yo-yo" # assert test with custom message, # used to see if Car's init method sets the odometer correctly # this should pass (no output) test_car = Car() assert test_car._odometer == 0, "Car does not set odometer correctly" # TODO: 2. write assert statements to show if Car sets the fuel correctly # Note that Car's __init__ function sets the fuel in one of two ways: # using the value passed in or the default # You should test both of these test_car = Car(fuel=10) run_tests() # TODO: 3. Uncomment the following line and run the doctests # (PyCharm may see your >>> doctest comments and run doctests anyway.) # doctest.testmod() # TODO: 4. Fix the failing is_long_word function # (don't change the tests, change the function!) # TODO: 5. Write and test a function to format a phrase as a sentence, # starting with a capital and ending with a single full stop. # Important: start with a function header and just use pass as the body # then add doctests for 3 tests: # 'hello' -> 'Hello.' # 'It is an ex parrot.' -> 'It is an ex parrot.' # and one more you decide (one that is valid!) # test this and watch the tests fail # then write the body of the function so that the tests pass