Add test for SyntaxError thrown by IptcImagePlugin, assert log

tests/test_image.py

@@ -1,6 +1,7 @@
 import os
 import PIL
 import pytest
+from unittest.mock import Mock, patch
 from PIL import Image
 
 from sigal import init_logging
@@ -160,7 +161,7 @@ def test_get_exif_tags():
     assert 'gps' not in simple
 
 
-def test_get_iptc_data():
+def test_get_iptc_data(caplog):
     test_image = '1.jpg'
     src_file = os.path.join(CURRENT_DIR, 'sample', 'pictures', 'iptcTest',
                             test_image)
@@ -180,6 +181,12 @@ def test_get_iptc_data():
                             test_image)
     assert get_iptc_data(src_file) == {}
 
+    # Test catching the SyntaxError -- assert output
+    config = {'getiptcinfo.side_effect':SyntaxError}
+    with patch('sigal.image.IptcImagePlugin.getiptcinfo', side_effect=SyntaxError) as i:
+            get_iptc_data(src_file)
+            assert ['IPTC Error in'] == [ log.message[:13] for log in caplog.records ]
+
 
 def test_iso_speed_ratings():
     data = {'ISOSpeedRatings': ()}