From 14f070a5052738eccda4c57e98477850b8c32da6 Mon Sep 17 00:00:00 2001
From: Alexandru Dima <alexdima@microsoft.com>
Date: Fri, 15 Jan 2021 19:32:20 +0100
Subject: [PATCH] Always leave at least an error listener

---
 src/vs/base/test/common/stream.test.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/vs/base/test/common/stream.test.ts b/src/vs/base/test/common/stream.test.ts
index d936ad52bcc..a7dc6efe0f1 100644
--- a/src/vs/base/test/common/stream.test.ts
+++ b/src/vs/base/test/common/stream.test.ts
@@ -106,6 +106,8 @@ suite('Stream', () => {
 		error = false;
 		stream.removeListener('error', errorListener);
 
+		// always leave at least one error listener to streams to avoid unexpected errors during test running
+		stream.on('error', () => { });
 		stream.error(new Error());
 		assert.equal(error, false);
 	});
-- 
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