1 files changed, 23 insertions, 0 deletions
diff --git a/session_manager_unittest.py b/session_manager_unittest.py
index 7fb8c55..532ae75 100644
--- a/session_manager_unittest.py
+++ b/session_manager_unittest.py
@@ -33,6 +33,9 @@ class PlaylistMock:
     def getSongs(self):
         return self.songs
 
+    def clear(self):
+        self.__init__()
+
 class ABControllerMock:
     def __init__(self):
         self.limits = dict()
@@ -45,6 +48,9 @@ class ABControllerMock:
     def getLimits(self, song):
         return self.limits.get(song)
 
+    def clear(self):
+        self.__init__()
+
 class MockFile:
     def __init__(self, init=""):
         self.contents = init
@@ -138,3 +144,20 @@ def test_loadAndSaveEmptySession():
     assert songs == list()
     for s in songs:
         assert abControllerMock.getLimits(s) == None
+
+def test_loadSessionNotAdditive():
+    playlistMock = PlaylistMock()
+    abControllerMock = ABControllerMock()
+    uut = SessionManager(playlistMock, abControllerMock)
+
+    sessionFile = MockFile(dumps(testSession))
+    uut.loadSession(sessionFile)
+    uut.loadSession(sessionFile)
+
+    songs = playlistMock.getSongs()
+    assert len(songs) == len(set(songs))
+    for s in songs:
+        abLimits = abControllerMock.getLimits(s)
+        if abLimits is not None:
+            abLimitStr = [f"[{l[0]}, {l[1]}] " for l in abLimits]
+            assert len(abLimitStr) == len(set(abLimitStr))