The standard test run looks like this

SAMPLE_CONFIG = {"api_key": "test"}


# Run standard built-in tap tests from the SDK:
def test_standard_tap_tests():
    """Run standard tap tests from the SDK."""
    tests = get_standard_tap_tests(TapKrow, config=SAMPLE_CONFIG)
    for test in tests:
        test()

It appears one of the standard tests is attempting to call the real API. Which of course fails, because "test" is not a valid API key.