def testOpenIteratorAfterLayerRemoval(self):
"""
Test that removing layer after opening an iterator does not crash. All required
information should be captured in the iterator's source and there MUST be no
links between the iterators and the layer's data provider
"""
if not getattr(self, 'getEditableLayer', None):
return
l = self.getEditableLayer()
self.assertTrue(l.isValid())
# store the source
source = QgsVectorLayerFeatureSource(l)
# delete the layer
del l
# get the features
pks = []
for f in source.getFeatures():
pks.append(f['pk'])
self.assertEqual(set(pks), {1, 2, 3, 4, 5})
def testOpenIteratorAfterLayerRemoval(self):
"""
Test that removing layer after opening an iterator does not crash. All required
information should be captured in the iterator's source and there MUST be no
links between the iterators and the layer's data provider
"""
if not getattr(self, 'getEditableLayer', None):
return
l = self.getEditableLayer()
self.assertTrue(l.isValid())
# store the source
source = QgsVectorLayerFeatureSource(l)
# delete the layer
del l
# get the features
pks = []
for f in source.getFeatures():
pks.append(f['pk'])
self.assertEqual(set(pks), {1, 2, 3, 4, 5})
def createRenderer(self) -> QgsSingleSymbolRenderer: # pylint: disable=missing-function-docstring
filtering = SettingsRegistry.label_filtering()
topological = self.topological and self.layer.selectedFeatureCount(
) == 2
if filtering == SettingsRegistry.LABEL_NONE:
return QgsNullSymbolRenderer()
if filtering == SettingsRegistry.LABEL_SELECTED:
if self.feature_id is None or self.vertex_number is None:
# labeling selected vertex only, and no selection => no renderer
return QgsNullSymbolRenderer()
selection = {self.feature_id}
vertex_number = self.vertex_number
else:
selection = self.layer.selectedFeatureIds()
vertex_number = None
if topological:
request = QgsFeatureRequest().setFilterFids(
self.layer.selectedFeatureIds()).setNoAttributes()
topological_geometries = {
f.id(): f.geometry()
for f in self.layer.getFeatures(request)
}
else:
topological_geometries = None
layer_source = QgsVectorLayerFeatureSource(self.layer)
return VertexHighlighterRenderer(
source=layer_source,
layer_type=self.layer_type,
selection=selection,
vertex_number=vertex_number,
topological_geometries=topological_geometries,
)
