From d78f6f7f14e3f42ec8c9f46eccfe8a66c7a42091 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=8E=8B=E9=9C=84=E9=9C=84?= <1141195807@qq.com>
Date: Sat, 15 Oct 2022 22:16:28 +0800
Subject: [PATCH] Backport #14591 to 3.5.
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Signed-off-by: 王霄霄 <1141195807@qq.com>
---
 tests/integration/clientv3/watch_test.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tests/integration/clientv3/watch_test.go b/tests/integration/clientv3/watch_test.go
index 7a992ecf974..e4474c23c48 100644
--- a/tests/integration/clientv3/watch_test.go
+++ b/tests/integration/clientv3/watch_test.go
@@ -340,6 +340,9 @@ func putAndWatch(t *testing.T, wctx *watchctx, key, val string) {
 		if !ok {
 			t.Fatalf("unexpected watch close")
 		}
+		if err := v.Err(); err != nil {
+			t.Fatalf("unexpected watch response error: %v", err)
+		}
 		if string(v.Events[0].Kv.Value) != val {
 			t.Fatalf("bad value got %v, wanted %v", v.Events[0].Kv.Value, val)
 		}