Set feature valid on setId

Author: m-kuhn

src/core/qgsfeature.cpp

@@ -128,6 +128,7 @@ void QgsFeature::setId( QgsFeatureId id )
 
   d.detach();
   d->fid = id;
+  d->valid = true;
 }
 
 QgsAttributes QgsFeature::attributes() const

tests/src/python/test_qgsfeature.py

@@ -63,9 +63,8 @@ def test_Validity(self):
         self.assertTrue(f.isValid())
         f.setValid(False)
         self.assertFalse(f.isValid())
-
-        f.setValid(False)
-        self.assertFalse(f.isValid())
+        f.setId(27)
+        self.assertTrue(f.isValid())
 
     def test_Attributes(self):
         myPath = os.path.join(unitTestDataPath(), 'lines.shp')