def METHOD_NAME(self):
    """Check if Molden Style number rounding works as expected."""
    # If the 6th digit after dot is greater than 5, but is not 7,
    # round the number upto 6th place.
    # Else truncate at 6th digit after dot.
    assert round_molden(1) == 1
    assert round_molden(-1) == -1
    assert round_molden(0.999995789) == 0.999995
    assert round_molden(-0.999995789) == -0.999995
    assert round_molden(0.999996789) == 0.999997
    assert round_molden(-0.999997789) == -0.999997
    assert round_molden(0.999997789) == 0.999997
    assert round_molden(-0.999998789) == -0.999999
    assert round_molden(-0.999999999) == -1.0