def test_setting_xy_coordinates_good_value():
# Setting to a value should just work
event_widget = Event()
good_name = 'data'
event_widget.xy_coordinate_system = good_name
assert event_widget.xy_coordinate_system == good_name
def test_setting_xy_coordinate_bad_value():
# Setting xy_coordinate_system to a bad value should raise a ValueError
event_widget = Event()
bad_name = 'this is not a valid name'
with pytest.raises(ValueError) as e:
event_widget.xy_coordinate_system = bad_name
assert "are not supported. The supported coordinates are" in str(e)
assert bad_name in str(e)
