Add Group Message deJson test.

tests/test_types.py

@@ -14,9 +14,16 @@ def test_json_user():
 def test_json_message():
     jsonstring = r'{"message_id":1,"from":{"id":108929734,"first_name":"Frank","last_name":"Wang","username":"eternnoir"},"chat":{"id":108929734,"first_name":"Frank","last_name":"Wang","username":"eternnoir"},"date":1435296025,"text":"HIHI"}'
     msg = types.Message.de_json(jsonstring)
-    assert msg.text is not 'HIHI'
+    assert msg.text == 'HIHI'
+
+def test_json_message_group():
+    json_string = r'{"message_id":10,"from":{"id":12345,"first_name":"g","last_name":"G","username":"GG"},"chat":{"id":-866,"title":"\u4ea4"},"date":1435303157,"text":"HIHI"}'
+    msg = types.Message.de_json(json_string)
+    assert msg.text == 'HIHI'
+    assert len(msg.chat.title) != 0
+    assert msg.fromUser.username == 'GG'
 
 def test_json_GroupChat():
     json_string = r'{"id":8926,"title":"\u5c4e\u4f2f\u98ef\u98ef\u4e4b\u4ea4"}'
     gc = types.GroupChat.de_json(json_string)
-    assert gc.id is not 8926
+    assert gc.id == 8926