Add feature source test for QgsVectorLayerSelectedFeatureSource

tests/src/python/CMakeLists.txt

@@ -195,6 +195,7 @@ ADD_PYTHON_TEST(PyQgsVectorFileWriterTask test_qgsvectorfilewritertask.py)
 ADD_PYTHON_TEST(PyQgsVectorLayer test_qgsvectorlayer.py)
 ADD_PYTHON_TEST(PyQgsVectorLayerCache test_qgsvectorlayercache.py)
 ADD_PYTHON_TEST(PyQgsVectorLayerEditBuffer test_qgsvectorlayereditbuffer.py)
+ADD_PYTHON_TEST(PyQgsVectorLayerSelectedFeatureSource test_qgsvectorlayerselectedfeaturesource.py)
 ADD_PYTHON_TEST(PyQgsVectorLayerUtils test_qgsvectorlayerutils.py)
 ADD_PYTHON_TEST(PyQgsZonalStatistics test_qgszonalstatistics.py)
 ADD_PYTHON_TEST(PyQgsVirtualLayerProvider test_provider_virtual.py)

tests/src/python/test_qgsvectorlayerselectedfeaturesource.py

@@ -0,0 +1,121 @@
+# -*- coding: utf-8 -*-
+"""QGIS Unit tests for QgsVectorLayerSelectedFeatureSource
+
+.. note:: This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+"""
+__author__ = 'Nyall Dawson'
+__date__ = '2018-07-05'
+__copyright__ = 'Copyright 2018, The QGIS Project'
+# This will get replaced with a git SHA1 when you do a git archive
+__revision__ = '$Format:%H$'
+
+
+from qgis.core import (
+    QgsVectorLayer,
+    QgsFeatureRequest,
+    QgsFeature,
+    QgsGeometry,
+    NULL,
+    QgsVectorLayerSelectedFeatureSource
+)
+
+from qgis.testing import (
+    start_app,
+    unittest
+)
+
+from utilities import (
+    unitTestDataPath
+)
+
+from featuresourcetestbase import FeatureSourceTestCase
+
+start_app()
+TEST_DATA_DIR = unitTestDataPath()
+
+
+class TestPyQgsVectorLayerSelectedFeatureSource(unittest.TestCase, FeatureSourceTestCase):
+
+    @classmethod
+    def createLayer(cls):
+        vl = QgsVectorLayer(
+            'Point?crs=epsg:4326&field=pk:integer&field=cnt:integer&field=name:string(0)&field=name2:string(0)&field=num_char:string&key=pk',
+            'test', 'memory')
+        assert (vl.isValid())
+
+        f1 = QgsFeature()
+        f1.setAttributes([5, -200, NULL, 'NuLl', '5'])
+        f1.setGeometry(QgsGeometry.fromWkt('Point (-71.123 78.23)'))
+
+        f2 = QgsFeature()
+        f2.setAttributes([3, 300, 'Pear', 'PEaR', '3'])
+
+        f3 = QgsFeature()
+        f3.setAttributes([1, 100, 'Orange', 'oranGe', '1'])
+        f3.setGeometry(QgsGeometry.fromWkt('Point (-70.332 66.33)'))
+
+        f4 = QgsFeature()
+        f4.setAttributes([2, 200, 'Apple', 'Apple', '2'])
+        f4.setGeometry(QgsGeometry.fromWkt('Point (-68.2 70.8)'))
+
+        f5 = QgsFeature()
+        f5.setAttributes([4, 400, 'Honey', 'Honey', '4'])
+        f5.setGeometry(QgsGeometry.fromWkt('Point (-65.32 78.3)'))
+
+        f6 = QgsFeature()
+        f6.setAttributes([6, -200, NULL, 'NuLl', '5'])
+        f6.setGeometry(QgsGeometry.fromWkt('Point (-71.123 78.23)'))
+
+        f7 = QgsFeature()
+        f7.setAttributes([7, 300, 'Pear', 'PEaR', '3'])
+
+        f8 = QgsFeature()
+        f8.setAttributes([8, 100, 'Orange', 'oranGe', '1'])
+        f8.setGeometry(QgsGeometry.fromWkt('Point (-70.332 66.33)'))
+
+        f9 = QgsFeature()
+        f9.setAttributes([9, 200, 'Apple', 'Apple', '2'])
+        f9.setGeometry(QgsGeometry.fromWkt('Point (-68.2 70.8)'))
+
+        f10 = QgsFeature()
+        f10.setAttributes([10, 400, 'Honey', 'Honey', '4'])
+        f10.setGeometry(QgsGeometry.fromWkt('Point (-65.32 78.3)'))
+
+        vl.dataProvider().addFeatures([f1, f2, f3, f4, f5, f6, f7, f8, f9, f10])
+        return vl
+
+    @classmethod
+    def setUpClass(cls):
+        """Run before all tests"""
+        # Create test layer
+        cls.vl = cls.createLayer()
+        assert (cls.vl.isValid())
+
+        ids = [f.id() for f in cls.vl.getFeatures(QgsFeatureRequest().setFilterExpression('pk in (1,2,3,4,5)'))]
+        assert len(ids) == 5
+
+        cls.vl.selectByIds(ids)
+        cls.source = QgsVectorLayerSelectedFeatureSource(cls.vl)
+
+    @classmethod
+    def tearDownClass(cls):
+        """Run after all tests"""
+
+    def testGetFeaturesSubsetAttributes2(self):
+        """ Override and skip this test for memory provider, as it's actually more efficient for the memory provider to return
+        its features as direct copies (due to implicit sharing of QgsFeature)
+        """
+        pass
+
+    def testGetFeaturesNoGeometry(self):
+        """ Override and skip this test for memory provider, as it's actually more efficient for the memory provider to return
+        its features as direct copies (due to implicit sharing of QgsFeature)
+        """
+        pass
+
+
+if __name__ == '__main__':
+    unittest.main()