Add more tests

discord_rss_bot/custom_filters.py

@@ -64,4 +64,4 @@ def entry_is_blacklisted(entry_to_check: Entry) -> bool:
 def convert_to_md(thing: str) -> str:
     """Discord does not support tables so we need to remove them from the markdown."""
     logger.debug(f"Converting {thing} to markdown.")
-    return markdownify(thing, strip=["table", "thead", "tbody", "tr", "th", "td"])
+    return markdownify(thing, strip=["table", "thead", "tbody", "tr", "th", "td"]) if thing else ""

discord_rss_bot/settings.py

@@ -67,10 +67,6 @@ def get_reader(custom_location: str = "") -> Reader:
     db_location: str = get_db_location(custom_location)
     logger.debug(f"Database location: {db_location}")
 
-    if not os.path.exists(db_location):
-        logger.error("Database does not exist.")
-        raise FileNotFoundError("Database does not exist.")
-
     return make_reader(url=db_location)