def test_get_instance_from_gdal_layer(mocker):
f = mocker.patch.object(macros, '_get_field_type_by_name')
f.return_value = {}
f = mocker.patch.object(macros, '_get_get_field_values')
f.return_value = lambda x: []
mock_class = MagicMock()
mock_gdal_layer = MagicMock()
mock_gdal_layer.GetFeatureCount.return_value = 1
mock_gdal_layer.GetNextFeature.return_value = None
mock_transform_gdal_geometry = MagicMock()
t = _get_instance_from_gdal_layer(mock_class, mock_gdal_layer,
mock_transform_gdal_geometry)
assert not len(t.geometries)
mock_transformed_gdal_geometry = MagicMock()
mock_transformed_gdal_geometry.ExportToWkb.side_effect = WKBReadingError()
mock_transform_gdal_geometry.return_value = mock_transformed_gdal_geometry
mock_feature = MagicMock()
mock_gdal_layer.GetNextFeature.return_value = mock_feature
t = _get_instance_from_gdal_layer(mock_class, mock_gdal_layer,
mock_transform_gdal_geometry)
assert not len(t.geometries)
def deserialize_wkb(data):
geom = lgeos.GEOSGeomFromWKB_buf(c_char_p(data), c_size_t(len(data)))
if not geom:
raise WKBReadingError(
"Could not create geometry because of errors while reading input.")
return geom