From d7b98c53a160cc1bd6a9bd6387db4a98da61b9d7 Mon Sep 17 00:00:00 2001
From: Mark Molinaro <mamolin@microsoft.com>
Date: Wed, 17 Nov 2021 12:12:45 -0800
Subject: [PATCH] test: fix instability in polling tests

---
 test/helpers/TestHelper.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/test/helpers/TestHelper.js b/test/helpers/TestHelper.js
index 02214ce..e548122 100644
--- a/test/helpers/TestHelper.js
+++ b/test/helpers/TestHelper.js
@@ -119,9 +119,11 @@ TestHelper.prototype.remove = function remove(name) {
 };
 
 TestHelper.prototype.tick = function tick(arg, fn) {
+	// if polling is set, ensure the tick is longer than the polling interval.
+	let defaultTick = (+process.env.WATCHPACK_POLLING || 100) + 10;
 	if (typeof arg === "function") {
 		fn = arg;
-		arg = 100;
+		arg = defaultTick;
 	}
 	setTimeout(function() {
 		fn();