def testGettersSetters(self):
""" test combo getters/setters """
m = QgsMapLayerComboBox()
l1 = create_layer('l1')
QgsProject.instance().addMapLayer(l1)
l2 = create_layer('l2')
QgsProject.instance().addMapLayer(l2)
m.setFilters(QgsMapLayerProxyModel.LineLayer | QgsMapLayerProxyModel.WritableLayer)
self.assertEqual(m.filters(), QgsMapLayerProxyModel.LineLayer | QgsMapLayerProxyModel.WritableLayer)
m.setExceptedLayerList([l2])
self.assertEqual(m.exceptedLayerList(), [l2])
m.setExcludedProviders(['a', 'b'])
self.assertEqual(m.excludedProviders(), ['a', 'b'])
