[Tests] Debug assert_raises_rpc_error

random-zebra · Fuzzbawls · commit ab553bf6e98c · 2020-01-11T15:42:57.000-08:00
Github-Pull: #1218 Rebased-From: 261bb6a
diff --git a/test/functional/test_framework/util.py b/test/functional/test_framework/util.py
@@ -115,7 +115,7 @@ def try_rpc(code, message, fun, *args, **kwds):
         if (code is not None) and (code != e.error["code"]):
             raise AssertionError("Unexpected JSONRPC error code %i" % e.error["code"])
         if (message is not None) and (message not in e.error['message']):
-            raise AssertionError("Expected substring not found:" + e.error['message'])
+            raise AssertionError("Expected substring (%s) not found in: %s" % (message, e.error['message']))
         return True
     except Exception as e:
         raise AssertionError("Unexpected exception raised: " + type(e).__name__)
