Add shapefile provider tests

+ Fix OGR provider so it does not return features without geometry when
filtering with a FilterRect

src/providers/ogr/qgsogrfeatureiterator.cpp

@@ -74,15 +74,9 @@ QgsOgrFeatureIterator::QgsOgrFeatureIterator( QgsOgrFeatureSource* source, bool
   // spatial query to select features
   if ( mRequest.filterType() == QgsFeatureRequest::FilterRect )
   {
-    OGRGeometryH filter = 0;
-    QString wktExtent = QString( "POLYGON((%1))" ).arg( mRequest.filterRect().asPolygon() );
-    QByteArray ba = wktExtent.toAscii();
-    const char *wktText = ba;
-
-    OGR_G_CreateFromWkt(( char ** )&wktText, NULL, &filter );
-    QgsDebugMsg( "Setting spatial filter using " + wktExtent );
-    OGR_L_SetSpatialFilter( ogrLayer, filter );
-    OGR_G_DestroyGeometry( filter );
+    const QgsRectangle& rect = mRequest.filterRect();
+
+    OGR_L_SetSpatialFilterRect( ogrLayer, rect.xMinimum(), rect.yMinimum(), rect.xMaximum(), rect.yMaximum() );
   }
   else
   {
@@ -186,6 +180,9 @@ bool QgsOgrFeatureIterator::fetchFeature( QgsFeature& feature )
     if ( !readFeature( fet, feature ) )
       continue;
 
+    if ( mRequest.filterType() == QgsFeatureRequest::FilterRect && !feature.constGeometry() )
+      continue;
+
     // we have a feature, end this cycle
     feature.setValid( true );
     OGR_F_Destroy( fet );

src/providers/spatialite/qgsspatialitefeatureiterator.cpp

@@ -144,6 +144,9 @@ bool QgsSpatiaLiteFeatureIterator::close()
 
 bool QgsSpatiaLiteFeatureIterator::prepareStatement( QString whereClause )
 {
+  if ( !mHandle )
+    return false;
+
   try
   {
     QString sql = QString( "SELECT %1" ).arg( mHasPrimaryKey ? quotedPrimaryKey() : "0" );

tests/src/python/CMakeLists.txt

@@ -45,6 +45,7 @@ ADD_PYTHON_TEST(PyQgsEditWidgets test_qgseditwidgets.py)
 ADD_PYTHON_TEST(PyQgsRangeWidgets test_qgsrangewidgets.py)
 ADD_PYTHON_TEST(PyQgsPostgresProvider test_provider_postgres.py)
 ADD_PYTHON_TEST(PyQgsSpatialiteProvider test_provider_spatialite.py)
+ADD_PYTHON_TEST(PyQgsShapefileProvider test_provider_shapefile.py)
 ADD_PYTHON_TEST(PyQgsSpatialiteProviderOther test_qgsspatialiteprovider.py)
 IF (WITH_APIDOC)
   ADD_PYTHON_TEST(PyQgsDocCoverage test_qgsdoccoverage.py)

tests/src/python/providertestbase.py

@@ -15,19 +15,23 @@
 from qgis.core import QgsRectangle, QgsFeatureRequest, QgsGeometry, NULL
 from utilities import TestCase
 
-class ProviderTestCase(object):
 
+class ProviderTestCase(object):
     def runGetFeatureTests(self, provider):
-        assert len( [f for f in provider.getFeatures()] ) == 5
-        assert len( [f for f in provider.getFeatures( QgsFeatureRequest().setFilterExpression( 'name IS NOT NULL' ) )] ) == 4
-        assert len( [f for f in provider.getFeatures( QgsFeatureRequest().setFilterExpression('name LIKE \'Apple\'' ) )] ) == 1
-        assert len( [f for f in provider.getFeatures( QgsFeatureRequest().setFilterExpression('name ILIKE \'aPple\'' ) )] ) == 1
-        assert len( [f for f in provider.getFeatures( QgsFeatureRequest().setFilterExpression('name ILIKE \'%pp%\'' ) )] ) == 1
-        assert len( [f for f in provider.getFeatures( QgsFeatureRequest().setFilterExpression('cnt > 0' ) ) ] ) == 4
-        assert len( [f for f in provider.getFeatures( QgsFeatureRequest().setFilterExpression('cnt < 0' ) ) ] ) == 1
-        assert len( [f for f in provider.getFeatures( QgsFeatureRequest().setFilterExpression('cnt >= 100' ) ) ] ) == 4
-        assert len( [f for f in provider.getFeatures( QgsFeatureRequest().setFilterExpression('cnt <= 100' ) ) ] ) == 2
-        assert len( [f for f in provider.getFeatures( QgsFeatureRequest().setFilterExpression('pk IN (1, 2, 4, 8)' ) )] ) == 3
+        assert len([f for f in provider.getFeatures()]) == 5
+        assert len([f for f in provider.getFeatures(QgsFeatureRequest().setFilterExpression('name IS NOT NULL'))]) == 4
+        assert len(
+            [f for f in provider.getFeatures(QgsFeatureRequest().setFilterExpression('name LIKE \'Apple\''))]) == 1
+        assert len(
+            [f for f in provider.getFeatures(QgsFeatureRequest().setFilterExpression('name ILIKE \'aPple\''))]) == 1
+        assert len(
+            [f for f in provider.getFeatures(QgsFeatureRequest().setFilterExpression('name ILIKE \'%pp%\''))]) == 1
+        assert len([f for f in provider.getFeatures(QgsFeatureRequest().setFilterExpression('cnt > 0'))]) == 4
+        assert len([f for f in provider.getFeatures(QgsFeatureRequest().setFilterExpression('cnt < 0'))]) == 1
+        assert len([f for f in provider.getFeatures(QgsFeatureRequest().setFilterExpression('cnt >= 100'))]) == 4
+        assert len([f for f in provider.getFeatures(QgsFeatureRequest().setFilterExpression('cnt <= 100'))]) == 2
+        assert len(
+            [f for f in provider.getFeatures(QgsFeatureRequest().setFilterExpression('pk IN (1, 2, 4, 8)'))]) == 3
 
     def testGetFeaturesUncompiled(self):
         try:
@@ -45,7 +49,7 @@ def testGetFeaturesCompiled(self):
 
     def testGetFeaturesFilterRectTests(self):
         extent = QgsRectangle(-70, 67, -60, 80)
-        features = [ f['pk'] for f in self.provider.getFeatures( QgsFeatureRequest().setFilterRect( extent ) ) ]
+        features = [f['pk'] for f in self.provider.getFeatures(QgsFeatureRequest().setFilterRect(extent))]
         assert set(features) == set([2L, 4L]), 'Got {} instead'.format(features)
 
     def testMinValue(self):
@@ -57,14 +61,16 @@ def testMaxValue(self):
         assert self.provider.maximumValue(2) == 'Pear'
 
     def testExtent(self):
-        reference = QgsGeometry.fromRect(QgsRectangle(-71.1230000000000047,66.3299999999999983,-65.3199999999999932,78.2999999999999972))
-        provider_extent=QgsGeometry.fromRect(self.provider.extent())
+        reference = QgsGeometry.fromRect(
+            QgsRectangle(-71.1230000000000047, 66.3299999999999983, -65.3199999999999932, 78.2999999999999972))
+        provider_extent = QgsGeometry.fromRect(self.provider.extent())
 
-        assert QgsGeometry.compare( provider_extent.asPolygon(), reference.asPolygon(), 0.000001)
+        assert QgsGeometry.compare(provider_extent.asPolygon(), reference.asPolygon(), 0.000001)
 
     def testUnique(self):
         assert set(self.provider.uniqueValues(1)) == set([-200, 100, 200, 300, 400])
-        assert set([u'Apple', u'Honey', u'Orange', u'Pear', NULL]) == set(self.provider.uniqueValues(2)), 'Got {}'.format(set(self.provider.uniqueValues(2)))
+        assert set([u'Apple', u'Honey', u'Orange', u'Pear', NULL]) == set(
+            self.provider.uniqueValues(2)), 'Got {}'.format(set(self.provider.uniqueValues(2)))
 
     def testFeatureCount(self):
-        assert self.provider.featureCount() == 5
+        assert self.provider.featureCount() == 5

tests/src/python/test_provider_shapefile.py

@@ -0,0 +1,54 @@
+# -*- coding: utf-8 -*-
+"""QGIS Unit tests for the postgres provider.
+
+.. 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__ = 'Matthias Kuhn'
+__date__ = '2015-04-23'
+__copyright__ = 'Copyright 2015, The QGIS Project'
+# This will get replaced with a git SHA1 when you do a git archive
+__revision__ = '$Format:%H$'
+
+import qgis
+import os
+
+from qgis.core import QgsVectorLayer, QgsFeatureRequest, QgsFeature, QgsProviderRegistry
+from PyQt4.QtCore import QSettings
+from utilities import (unitTestDataPath,
+                       getQgisTestApp,
+                       unittest,
+                       TestCase
+                       )
+from providertestbase import ProviderTestCase
+
+QGISAPP, CANVAS, IFACE, PARENT = getQgisTestApp()
+TEST_DATA_DIR = unitTestDataPath()
+
+class TestPyQgsPostgresProvider(TestCase, ProviderTestCase):
+    @classmethod
+    def setUpClass(cls):
+        """Run before all tests"""
+        # Create test layer
+        cls.vl = QgsVectorLayer(u'{}/provider/shapefile.shp|layerid=0'.format(TEST_DATA_DIR), u'test', u'ogr' )
+        assert(cls.vl.isValid())
+        cls.provider = cls.vl.dataProvider()
+
+    @classmethod
+    def tearDownClass(cls):
+        """Run after all tests"""
+
+    def testUnique(self):
+        """
+        Override parent method because OGR doesn't return NULL values in SELECT DISTINCT...
+        This is only to make the tests pass, not to define this as expected behavior so if it is possible to remove this
+        in the future even better.
+        """
+        assert set(self.provider.uniqueValues(1)) == set([-200, 100, 200, 300, 400])
+        assert set([u'Apple', u'Honey', u'Orange', u'Pear']) == set(self.provider.uniqueValues(2)), 'Got {}'.format(set(self.provider.uniqueValues(2)))
+
+
+if __name__ == '__main__':
+    unittest.main()

tests/testdata/provider/shapefile.prj

@@ -0,0 +1 @@
+GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137,298.257223563]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]]

tests/testdata/provider/shapefile.qpj

@@ -0,0 +1 @@
+GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4326"]]