Unit Tests

Testing my twttr

Using pytest library to write tests.
Using assert statements to do comparisons between the expected and actual output.
Separating different tests into different functions.
Using pytest.main() to run the tests instead of main().

Back to the Bank

Same as Testing my twttr

Re-requesting a Vanity Plate

Using pytest.mark.parametrize to run the same test with different inputs.
Using Black formatter to format my inputs.

Refueling

Using pytest.raises(...) to check if the function raises an Exception when it should