1 files changed, 19 insertions, 3 deletions
diff --git a/notifier_unittest.py b/notifier_unittest.py
index 721a5fd..b840c16 100644
--- a/notifier_unittest.py
+++ b/notifier_unittest.py
@@ -1,10 +1,15 @@
 import pytest
 
 from notifier import Notifier
+from player_mock import Player
 
 @pytest.fixture
-def uut():
-    return Notifier()
+def mockPlayer():
+    return Player()
+
+@pytest.fixture
+def uut(mockPlayer):
+    return Notifier(mockPlayer)
 
 def checkEvent(uut, event):
     callbacks = 2
@@ -29,4 +34,15 @@ def test_allEvents(uut):
 def test_eventWithoutRegisteredCallbacks(uut):
     uut.notify(Notifier.PLAYING_STATE_EVENT)
     # expect no crash
-    
+
+def test_playingStateEventWithMockPlayer(uut, mockPlayer):
+    called = False
+    def callback():
+        nonlocal called
+        called = True
+
+    uut.registerCallback(Notifier.PLAYING_STATE_EVENT, callback)
+
+    assert not called
+    mockPlayer.simulatePlayingStateChanged()
+    assert called