From 98ed5f62bbd0bafb611c498c5db4cc42c651184b Mon Sep 17 00:00:00 2001
From: Joel Einbinder <joeinbin@microsoft.com>
Date: Fri, 7 Feb 2020 16:19:34 -0800
Subject: [PATCH] fix(test): fix flaky worker test

---
 test/workers.spec.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/test/workers.spec.js b/test/workers.spec.js
index 3c369616bd..67143be531 100644
--- a/test/workers.spec.js
+++ b/test/workers.spec.js
@@ -25,12 +25,16 @@ module.exports.describe = function({testRunner, expect, FFOX, CHROMIUM, WEBKIT})
 
   describe('Workers', function() {
     it('Page.workers', async function({page, server}) {
+      const consoleMessagePromise = new Promise(x => page.once('console', x));
       await Promise.all([
         page.waitForEvent('workercreated'),
         page.goto(server.PREFIX + '/worker/worker.html')]);
       const worker = page.workers()[0];
       expect(worker.url()).toContain('worker.js');
 
+      // We might otherwise evaluate before the worker has had time to run its initial script.
+      await consoleMessagePromise;
+
       expect(await worker.evaluate(() => self['workerFunction']())).toBe('worker function result');
 
       await page.goto(server.EMPTY_PAGE);