From b0806cd76059dc970bebc40df7bf7699144b6854 Mon Sep 17 00:00:00 2001
From: Anne van Kesteren <annevk@annevk.nl>
Date: Thu, 7 Mar 2019 13:58:52 +0100
Subject: [PATCH] HTML: test WindowProxy self references

For https://github.com/whatwg/html/pull/4410.
---
 .../the-window-object/self-et-al.window.js    | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 html/browsers/the-window-object/self-et-al.window.js

diff --git a/html/browsers/the-window-object/self-et-al.window.js b/html/browsers/the-window-object/self-et-al.window.js
new file mode 100644
index 00000000000000..3deab0c3e02b75
--- /dev/null
+++ b/html/browsers/the-window-object/self-et-al.window.js
@@ -0,0 +1,26 @@
+[
+  "frames",
+  "globalThis",
+  "self",
+  "window"
+].forEach(windowProxySelfReference => {
+  test(() => {
+    const frame = document.body.appendChild(document.createElement("iframe")),
+          otherW = frame.contentWindow;
+    assert_equals(otherW[windowProxySelfReference], otherW);
+    frame.remove();
+    assert_equals(otherW[windowProxySelfReference], otherW);
+  }, `iframeWindow.${windowProxySelfReference} before and after removal`);
+
+  async_test(t => {
+    const otherW = window.open();
+    assert_equals(otherW[windowProxySelfReference], otherW);
+    otherW.close();
+    assert_equals(otherW[windowProxySelfReference], otherW);
+    t.step_timeout(() => {
+      assert_equals(otherW.opener, null); // Ensure browsing context is discarded
+      assert_equals(otherW[windowProxySelfReference], otherW);
+      t.done();
+    }, 250);
+  }, `popupWindow.${windowProxySelfReference} before, after closing, and after discarding`)
+});