diff --git a/edmond/plugins/playlist_of_the_day.py b/edmond/plugins/playlist_of_the_day.py
index 44d5cf5..219a907 100644
--- a/edmond/plugins/playlist_of_the_day.py
+++ b/edmond/plugins/playlist_of_the_day.py
@@ -90,11 +90,12 @@ class PlaylistOfTheDayPlugin(Plugin):
             today.isoformat(),
         )
 
-    def post_playlist(self, target):
+    def post_playlist(self, target: str) -> None:
         playlist: list[str] = self.get_storage_value(self.PLAYLIST_KEY, [])
         if not playlist:
             self.bot.log_e("Playlist empty.")
             self.signal_failure(target)
+            return
 
         linkified_items = map(PlaylistOfTheDayPlugin.linkify, playlist)
         html_items = map(lambda item: f"<li>{item}</li>", linkified_items)
@@ -104,6 +105,7 @@ class PlaylistOfTheDayPlugin(Plugin):
         if not url:
             self.bot.log_e("Shrlok returned None.")
             self.signal_failure(target)
+            return
 
         date = self.get_storage_value(self.DATE_KEY, "")
         if date != datetime.date.today().isoformat():
diff --git a/edmond/plugins/tests/test_sleep.py b/edmond/plugins/tests/test_sleep.py
index 6851ca0..ecbc26b 100644
--- a/edmond/plugins/tests/test_sleep.py
+++ b/edmond/plugins/tests/test_sleep.py
@@ -1,6 +1,5 @@
 import unittest
 from datetime import datetime, timedelta
-from unittest.mock import Mock, patch
 
 from edmond.tests.test_plugin import get_plugin_patcher
 from ..sleep import SleepPlugin
diff --git a/edmond/plugins/tests/test_wikipedia.py b/edmond/plugins/tests/test_wikipedia.py
deleted file mode 100644
index 44bd753..0000000
--- a/edmond/plugins/tests/test_wikipedia.py
+++ /dev/null
@@ -1,14 +0,0 @@
-import unittest
-
-from ..wikipedia import WikipediaPlugin
-
-
-class TestWikipediaPlugin(unittest.TestCase):
-    def test_limit_text_length(self):
-        text = "lorem ipsum blah blah."
-        result = WikipediaPlugin.limit_text_length(text, max_length=10)
-        self.assertEqual(result, "lorem…")
-        result = WikipediaPlugin.limit_text_length(text, max_length=15)
-        self.assertEqual(result, "lorem ipsum…")
-        result = WikipediaPlugin.limit_text_length(text, max_length=30)
-        self.assertEqual(result, "lorem ipsum blah blah.")
diff --git a/edmond/plugins/wikipedia.py b/edmond/plugins/wikipedia.py
index 8fb9911..75ed3da 100644
--- a/edmond/plugins/wikipedia.py
+++ b/edmond/plugins/wikipedia.py
@@ -1,4 +1,5 @@
 import time
+
 from typing import cast
 
 import wikipedia