From 3beb09d62cc3d1bb596bbf373bb8800f6278a5db Mon Sep 17 00:00:00 2001
From: Claudio Costa <cstcld91@gmail.com>
Date: Fri, 5 Feb 2021 16:31:53 +0100
Subject: [PATCH] Fix flaky test (#16874)

---
 config/file_test.go | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/config/file_test.go b/config/file_test.go
index e75ba47b92..f7e16d3537 100644
--- a/config/file_test.go
+++ b/config/file_test.go
@@ -927,7 +927,12 @@ func TestFileStoreWatcherEmitter(t *testing.T) {
 		cfgData, err := config.MarshalConfig(minimalConfig)
 		require.NoError(t, err)
 
-		ioutil.WriteFile(path, cfgData, 0644)
+		f, err := os.OpenFile(path, os.O_WRONLY, 0644)
+		require.NoError(t, err)
+		defer f.Close()
+		_, err = f.Write(cfgData)
+		require.NoError(t, err)
+
 		require.True(t, wasCalled(called, 5*time.Second), "callback should have been called when config written")
 	})