From 1b4a0302fcd93394255945e9c44dbffa9160a604 Mon Sep 17 00:00:00 2001
From: Yury Semikhatsky <yurys@chromium.org>
Date: Tue, 30 Jul 2019 13:19:56 -0700
Subject: [PATCH] fix(test): make sure selection is not empty before running
 copy command (#4772)

If current selection is empty document.execCommand('copy') may return false in some browsers (e.g. WebKit based ones).
---
 test/evaluation.spec.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/test/evaluation.spec.js b/test/evaluation.spec.js
index ee3988dcc0b2d..896745ce7b3cd 100644
--- a/test/evaluation.spec.js
+++ b/test/evaluation.spec.js
@@ -226,7 +226,11 @@ module.exports.addTests = function({testRunner, expect}) {
       expect(error.message).toContain('JSHandles can be evaluated only in the context they were created');
     });
     it('should simulate a user gesture', async({page, server}) => {
-      const result = await page.evaluate(() => document.execCommand('copy'));
+      const result = await page.evaluate(() => {
+        document.body.appendChild(document.createTextNode('test'));
+        document.execCommand('selectAll');
+        return document.execCommand('copy');
+      });
       expect(result).toBe(true);
     });
     it('should throw a nice error after a navigation', async({page, server}) => {