Add tests of attribute equivalence and deletion

Author: jim-easterbrook

tests/test_tags.py

@@ -1,6 +1,6 @@
 ##  python-exiv2 - Python interface to libexiv2
 ##  http://github.com/jim-easterbrook/python-exiv2
-##  Copyright (C) 2023-24  Jim Easterbrook  jim@jim-easterbrook.me.uk
+##  Copyright (C) 2023-25  Jim Easterbrook  jim@jim-easterbrook.me.uk
 ##
 ##  This program is free software: you can redistribute it and/or
 ##  modify it under the terms of the GNU General Public License as
@@ -69,6 +69,12 @@ def test_GroupInfo(self):
         self.assertIsInstance(tag_list, list)
         self.assertGreater(len(tag_list), 0)
         self.assertIsInstance(tag_list[0], exiv2.TagInfo)
+        self.check_result(info.groupName_, str, info['groupName'])
+        self.check_result(info.ifdName_, str, info['ifdName'])
+        with self.assertRaises(TypeError):
+            del info['groupName']
+        with self.assertRaises(AttributeError):
+            del info.ifdName_
 
     def test_TagInfo(self):
         info = exiv2.ExifTags.tagList(self.group_name)[0]
@@ -90,6 +96,12 @@ def test_TagInfo(self):
         self.check_result(info['title'], str, 'Processing Software')
         self.check_result(
             info['typeId'], exiv2.TypeId, exiv2.TypeId.asciiString)
+        self.check_result(info.name_, str, info['name'])
+        self.check_result(info.title_, str, info['title'])
+        with self.assertRaises(TypeError):
+            del info['name']
+        with self.assertRaises(AttributeError):
+            del info.title_
 
     def test_ExifKey(self):
         # constructors

tests/test_value.py

@@ -354,6 +354,11 @@ def test_Date(self):
         self.assertEqual(value.day, today.day)
         self.assertEqual(dict(value), {
             'year': today.year, 'month': today.month, 'day': today.day})
+        value['day'] = 1
+        with self.assertRaises(TypeError):
+            del value['day']
+        with self.assertRaises(TypeError):
+            del value.day
 
     def do_test_DateValue(self, py_date):
         data = bytes(py_date.strftime('%Y%m%d'), 'ascii')
@@ -415,6 +420,11 @@ def test_Time(self):
         self.assertEqual(dict(value), {
             'hour': now.hour, 'minute': now.minute, 'second': now.second,
             'tzHour': 1, 'tzMinute': 30})
+        value['second'] = 1
+        with self.assertRaises(TypeError):
+            del value['second']
+        with self.assertRaises(TypeError):
+            del value.second
 
     def do_test_TimeValue(self, py_time):
         exiv_time = exiv2.Time()