def test_unknown_client():
    """Simple test to get coverage to 100%!"""
    matrix = layout.Matrix()

    # The layout will not configure an unknown client.
    # Without the return statement in "configure" the following
    # code would result in an error
    assert matrix.configure("fakeclient", None) is None
Simple test to get coverage to 100%!
test/layouts/test_matrix.py