def testStringToTransformId(self): """ Test converting proj strings to corresponding datum IDs """ self.assertEqual(QgsDatumTransform.projStringToDatumTransformId(''), -1) self.assertEqual(QgsDatumTransform.projStringToDatumTransformId('not'), -1) test_string = '+towgs84=-403,684,41' id = QgsDatumTransform.projStringToDatumTransformId(test_string) self.assertNotEqual(id, -1) string = QgsDatumTransform.datumTransformToProj(id) self.assertEqual(string, test_string) self.assertEqual(QgsDatumTransform.projStringToDatumTransformId(test_string.upper()), id)