From 9fd0f124f7aca9731efe5c687703e8126a3908ea Mon Sep 17 00:00:00 2001
From: Dmitry Gozman <dgozman@gmail.com>
Date: Fri, 20 Mar 2020 20:52:33 -0700
Subject: [PATCH] test: add test for Map as eval argument

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

diff --git a/test/evaluation.spec.js b/test/evaluation.spec.js
index dc2c28113e024..4a760670104be 100644
--- a/test/evaluation.spec.js
+++ b/test/evaluation.spec.js
@@ -56,6 +56,10 @@ module.exports.describe = function({testRunner, expect, FFOX, CHROMIUM, WEBKIT,
       const result = await page.evaluate(a => Array.isArray(a), [1, 2, 3]);
       expect(result).toBe(true);
     });
+    it('should transfer maps as empty objects', async({page, server}) => {
+      const result = await page.evaluate(a => a.x.constructor.name + ' ' + JSON.stringify(a.x), {x: new Map([[1, 2]])});
+      expect(result).toBe('Object {}');
+    });
     it('should modify global environment', async({page}) => {
       await page.evaluate(() => window.globalVar = 123);
       expect(await page.evaluate('globalVar')).toBe(123);