@then(u'it should fail because "{reason}"')
def then_it_should_fail_because(context, reason):
    """
    Self documenting step that indicates why this step should fail.
    """
    assert False, reason % "FAILED: %s"

# @step(u'an error should fail because "{reason}"')
# def then_it_should_fail_because(context, reason):
#     """
#    Self documenting step that indicates why this step should fail.
#    """
#    assert False, reason
dataset/ETHPy150Open behave/behave/behave4cmd0/failing_steps.py/then_it_should_fail_because/swapped operands of `%`