[tests][test_worker] Made the wait method more verbose

beat/core/test/test_worker.py

@@ -406,6 +406,9 @@ class TestOneWorker(TestWorkerBase):
             message = self.controller.process(100)
             nb += 1
 
+        if message is None:
+            print("Process failed with the allocate range: {}".format(max))
+
         return message