From 4eedea620ff58d23f9571db4c1b4c13428e7a17a Mon Sep 17 00:00:00 2001
From: Shelley Vohr <shelley.vohr@gmail.com>
Date: Thu, 3 Jun 2021 00:02:52 +0200
Subject: [PATCH] test: fix failing iframe test

https://github.com/nodejs/node/pull/33021
---
 spec-main/api-browser-window-spec.ts | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/spec-main/api-browser-window-spec.ts b/spec-main/api-browser-window-spec.ts
index a96c489180133..f51ebff96aa11 100644
--- a/spec-main/api-browser-window-spec.ts
+++ b/spec-main/api-browser-window-spec.ts
@@ -3660,11 +3660,12 @@ describe('BrowserWindow module', () => {
         expect(w.webContents.isLoadingMainFrame()).to.be.false('isLoadingMainFrame');
 
         const didStartLoading = emittedOnce(w.webContents, 'did-start-loading');
-        w.webContents.executeJavaScript(`
+        await w.webContents.executeJavaScript(`(() => {
           var iframe = document.createElement('iframe')
           iframe.src = '${serverUrl}/page2'
           document.body.appendChild(iframe)
-        `);
+          return null
+        })()`);
         await didStartLoading;
 
         expect(w.webContents.isLoadingMainFrame()).to.be.false('isLoadingMainFrame');