human
I wrote the below code

    def dumb():
        pass
    definition = core.StepDefinition('FOO    BAR', dumb)
    assert_equals(definition.function, dumb)
    assert_equals(definition.file, core.fs.relpath(__file__).rstrip('c'))
    assert_equals(definition.line, 39)

What's a good function header?
assistant
#Here's a good function header.

def test_step_definition():