register_sentry breaks failed queue when func cannot be imported

tests/test_sentry.py

@@ -0,0 +1,29 @@
+from tests import RQTestCase
+from rq import Queue, Worker, get_failed_queue
+from rq.contrib.sentry import register_sentry
+
+
+class FakeSentry(object):
+    def captureException(self, *args, **kwds):
+        pass  # we cannot check this, because worker forks
+
+
+class TestSentry(RQTestCase):
+
+    def test_work_fails(self):
+        """Non importable jobs should be put on the failed queue event with sentry"""
+        q = Queue()
+        failed_q = get_failed_queue()
+
+        # Action
+        q.enqueue('_non.importable.job')
+        self.assertEquals(q.count, 1)
+
+        w = Worker([q])
+        register_sentry(FakeSentry(), w)
+
+        w.work(burst=True)
+
+        # Postconditions
+        self.assertEquals(failed_q.count, 1)
+        self.assertEquals(q.count, 0)