def METHOD_NAME():
    """
    test default properties
    use _defaults helper function defined in test_wind_mover.py
    """
    # ==========================================================================
    # assert w_grid.active == True  # timespan is as big as possible
    # assert w_grid.uncertain_duration == 3.0
    # assert w_grid.uncertain_time_delay == 0
    # assert w_grid.uncertain_speed_scale == 2
    # assert w_grid.uncertain_angle_scale == 0.4
    # assert w_grid.uncertain_angle_units == 'rad'
    # ==========================================================================
    assert w_grid.wind_scale == 1
    assert w_grid.extrapolate is False
    assert w_grid.time_offset == 0
    _defaults(w_grid)