Example with nosetest test generator and a typo in the function.

test_second_broken.py

def support_http_method(method):
    if method in ('POST', 'GETT'):
        return True
    else:
        return False

def test_support():
    expected_values = {
        'POST': True,
        'GET': True,
        'PUT': False,
        'DELETE': False
    }
    for method, expected in expected_values.items():
        yield check_support, method, expected

def check_support(method, expected):
    assert support_http_method(method) == expected