Added tests, updated instagram_tbot_extractor.py raise failure.

src/auto_archiver/modules/instagram_tbot_extractor/instagram_tbot_extractor.py

@@ -77,13 +77,14 @@ class InstagramTbotExtractor(Extractor):
             chat, since_id = self._send_url_to_bot(url)
             message = self._process_messages(chat, since_id, tmp_dir, result)
 
+            # This may be outdated and replaced by the below message, but keeping until confirmed
             if "You must enter a URL to a post" in message:
                 logger.debug(f"invalid link {url=} for {self.name}: {message}")
                 return False
-            # # TODO: It currently returns this as a success - is that intentional?
-            # if "Media not found or unavailable" in message:
-            #     logger.debug(f"invalid link {url=} for {self.name}: {message}")
-            #     return False
+
+            if "Media not found or unavailable" in message:
+                logger.debug(f"No media found for link {url=} for {self.name}: {message}")
+                return False
 
             if message:
                 result.set_content(message).set_title(message[:128])