def testCyclicDependency(self):
inDoc = """
<maplayers>
<maplayer>
<id>layerB</id>
<layerDependencies>
<layer id="layerA"/>
</layerDependencies>
</maplayer>
<maplayer>
<id>layerA</id>
<layerDependencies>
<layer id="layerB"/>
</layerDependencies>
</maplayer>
</maplayers>"""
doc = QDomDocument("testdoc")
doc.setContent(inDoc)
dep = QgsLayerDefinition.DependencySorter(doc)
self.assertTrue(dep.hasCycle())
def testDependency(self):
inDoc = """
<maplayers>
<maplayer>
<id>layerB</id>
<layerDependencies>
<layer id="layerA"/>
</layerDependencies>
</maplayer>
<maplayer>
<id>layerA</id>
</maplayer>
</maplayers>"""
doc = QDomDocument("testdoc")
doc.setContent(inDoc)
dep = QgsLayerDefinition.DependencySorter(doc)
nodes = dep.sortedLayerNodes()
self.assertTrue(not dep.hasCycle())
self.assertTrue(not dep.hasMissingDependency())
self.assertEqual(nodes[0].firstChildElement("id").text(), "layerA")
self.assertEqual(nodes[1].firstChildElement("id").text(), "layerB")
def testMissingDependency(self):
inDoc = """
<maplayers>
<maplayer>
<id>layerB</id>
<layerDependencies>
<layer id="layerA"/>
</layerDependencies>
</maplayer>
<maplayer>
<id>layerA</id>
<layerDependencies>
<layer id="layerC"/>
</layerDependencies>
</maplayer>
</maplayers>"""
doc = QDomDocument("testdoc")
doc.setContent(inDoc)
dep = QgsLayerDefinition.DependencySorter(doc)
nodes = dep.sortedLayerNodes()
self.assertTrue(not dep.hasCycle())
self.assertTrue(dep.hasMissingDependency())
def testDependencyQgz(self):
path = os.path.join(TEST_DATA_DIR, "embedded_groups", "project1.qgz")
dep = QgsLayerDefinition.DependencySorter(path)
ids = dep.sortedLayerIds()
self.assertEqual(len(ids), 3)
