From bcb571c18770b4972da7485fb0320442baddca5f Mon Sep 17 00:00:00 2001
From: Anders Kaseorg <anders@zulip.com>
Date: Sun, 18 Oct 2020 21:17:26 -0700
Subject: [PATCH] test-backend: Fix argparse error type.

ArgumentError takes two arguments.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
---
 tools/test-backend | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/test-backend b/tools/test-backend
index ead1de4263..94a8f78cda 100755
--- a/tools/test-backend
+++ b/tools/test-backend
@@ -267,7 +267,7 @@ def main() -> None:
     include_webhooks = options.coverage or options.include_webhooks
 
     if parallel < 1:
-        raise argparse.ArgumentError(
+        raise argparse.ArgumentTypeError(
             "option processes: Only positive integers are allowed.")
 
     zerver_test_dir = 'zerver/tests/'