How to use the betelgeuse.map_steps function in Betelgeuse

def test_get_multiple_steps_diff_items():
    """Check if parsing multiple steps of different items works."""
    multiple_steps = '\n'.join(MULTIPLE_STEPS.splitlines()[:-2] + ['\n'])
    assert map_steps(
        multiple_steps, MULTIPLE_EXPECTEDRESULTS) == [(
            '<ol>\n  <li><p>First step</p></li>\n  '
            '<li><p>Second step</p></li>\n</ol>\n',
            MULTIPLE_EXPECTEDRESULTS
        )]

def test_map_multiple_steps():
    """Check if mapping multiple steps works."""
    assert map_steps(MULTIPLE_STEPS, MULTIPLE_EXPECTEDRESULTS) == [
        ('<p>First step</p>', '<p>First step expected result.</p>'),
        ('<p>Second step</p>', '<p>Second step expected result.</p>'),
        ('<p>Third step</p>', '<p>Third step expected result.</p>'),
    ]

def test_map_single_step():
    """Check if mapping single step works."""
    mapped = [(SINGLE_STEP, SINGLE_EXPECTEDRESULT)]
    assert map_steps(SINGLE_STEP, SINGLE_EXPECTEDRESULT) == mapped