def testLayerDataSourceReset(self):
"""When adding a layer with the same id to the store make sure
the data source is also updated in case the layer validity has
changed from False to True"""
p = QgsProject()
store = p.layerStore()
vl1 = createLayer('valid')
vl2 = QgsVectorLayer('/not_a_valid_path.shp', 'invalid', 'ogr')
self.assertTrue(vl1.isValid())
self.assertFalse(vl2.isValid())
store.addMapLayers([vl1, vl2])
self.assertEqual(store.validCount(), 1)
self.assertEqual(len(store.mapLayers()), 2)
# Re-add the bad layer
store.addMapLayers([vl2])
self.assertEqual(store.validCount(), 1)
self.assertEqual(len(store.mapLayers()), 2)
doc = QDomDocument()
doc.setContent(
'<maplayer><provider encoding="UTF-8">ogr</provider><layername>fixed</layername><id>%s</id></maplayer>'
% vl2.id())
layer_node = QDomNode(doc.firstChild())
self.assertTrue(vl2.writeXml(layer_node, doc, QgsReadWriteContext()))
datasource_node = doc.createElement("datasource")
datasource_node.appendChild(
doc.createTextNode(os.path.join(TEST_DATA_DIR, 'points.shp')))
layer_node.appendChild(datasource_node)
p.readLayer(layer_node)
self.assertEqual(store.validCount(), 2)
self.assertEqual(len(store.mapLayers()), 2)
self.assertEqual(store.mapLayers()[vl2.id()].name(), 'fixed')
def _change_data_source(self, layer, datasource, provider_key):
"""Due to the fact that a project r/w context is not available inside
the map layers classes, the original style and subset string restore
happens in app, this function replicates app behavior"""
options = QgsDataProvider.ProviderOptions()
subset_string = ''
if not layer.isValid():
try:
subset_string = layer.dataProvider().subsetString()
except:
pass
layer.setDataSource(datasource, layer.name(), provider_key, options)
if subset_string:
layer.setSubsetString(subset_string)
self.assertTrue(layer.originalXmlProperties(), layer.name())
context = QgsReadWriteContext()
context.setPathResolver(QgsProject.instance().pathResolver())
errorMsg = ''
doc = QDomDocument()
self.assertTrue(doc.setContent(layer.originalXmlProperties()))
layer_node = QDomNode(doc.firstChild())
self.assertTrue(layer.readSymbology(layer_node, errorMsg, context))
def __init__(self, path):
"""
Initatlize class variables
"""
self.file_path = path
self.file = None
self.new_list = []
self.doc = QDomDocument()
self.node = QDomNode()