Parametrization

Test parametrization allows us to avoid redundant code by writing one test function/fixture that tries to test the same logic with different values/parameters. pytest will generate tests for us by calling the same test function/fixture passing different combination of parameters each time. Example:

pytest.mark.parametrize(
    ["param_name1", "param_name2", "param_name3"],
        [
        (1, "a", 3),
        (1, "x", 0),
        (5, "d", 100),
    ]
)
def test_func(param_name1, param_name2, param_name3):
    pass

• The first argument to pytest.mark.parametrize should either be a list of parameter names or a string of parameter names separated by “,”
• The second argument to pytest.mark.parametrize should be a list of test cases
• The arguments’ names to the test function should match the names in the first argument to pytest.mark.parametrize