missed the file :)

test/test_callbacks.py

@@ -0,0 +1,29 @@
+import unittest
+
+
+from shoebox import handlers
+
+
+class FooCallback(handlers.ArchiveCallback):
+    pass
+
+
+class BlahCallback(handlers.ArchiveCallback):
+    pass
+
+
+class TestCallbackList(unittest.TestCase):
+    def test_list(self):
+        config = {"callback_list": "test|test_callbacks:FooCallback,"
+                                   "shoebox.handlers:ChangeExtensionCallback, "
+                                   "%s:BlahCallback" % __name__}
+        c = handlers.CallbackList(**config)
+
+        # Note: isinstance will fail for this check because it's technically a
+        # different class since it comes from a different module i
+        # (the 'test' module).
+        self.assertTrue("FooCallback" in str(type(c.callbacks[0])))
+        self.assertTrue(isinstance(c.callbacks[1],
+                                    handlers.ChangeExtensionCallback))
+        self.assertTrue(isinstance(c.callbacks[2], BlahCallback))
+