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-rw-r--r--docshell/test/browser/browser_browsingContext-getAllBrowsingContextsInSubtree.js53
1 files changed, 53 insertions, 0 deletions
diff --git a/docshell/test/browser/browser_browsingContext-getAllBrowsingContextsInSubtree.js b/docshell/test/browser/browser_browsingContext-getAllBrowsingContextsInSubtree.js
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+++ b/docshell/test/browser/browser_browsingContext-getAllBrowsingContextsInSubtree.js
@@ -0,0 +1,53 @@
+/* Any copyright is dedicated to the Public Domain.
+ http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+async function addFrame(url) {
+ let iframe = content.document.createElement("iframe");
+ await new Promise(resolve => {
+ iframe.addEventListener("load", resolve, { once: true });
+ iframe.src = url;
+ content.document.body.appendChild(iframe);
+ });
+ return iframe.browsingContext;
+}
+
+add_task(async function () {
+ await BrowserTestUtils.withNewTab(
+ { gBrowser, url: "about:blank" },
+ async browser => {
+ // Add 15 example.com frames to the toplevel document.
+ let frames = await Promise.all(
+ Array.from({ length: 15 }).map(_ =>
+ // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+ SpecialPowers.spawn(browser, ["http://example.com/"], addFrame)
+ )
+ );
+
+ // Add an example.org subframe to each example.com frame.
+ let subframes = await Promise.all(
+ Array.from({ length: 15 }).map((_, i) =>
+ // eslint-disable-next-line @microsoft/sdl/no-insecure-url
+ SpecialPowers.spawn(frames[i], ["http://example.org/"], addFrame)
+ )
+ );
+
+ Assert.deepEqual(
+ subframes[0].getAllBrowsingContextsInSubtree(),
+ [subframes[0]],
+ "Childless context only has self in subtree"
+ );
+ Assert.deepEqual(
+ frames[0].getAllBrowsingContextsInSubtree(),
+ [frames[0], subframes[0]],
+ "Single-child context has 2 contexts in subtree"
+ );
+ Assert.deepEqual(
+ browser.browsingContext.getAllBrowsingContextsInSubtree(),
+ [browser.browsingContext, ...frames, ...subframes],
+ "Toplevel context has all subtree contexts"
+ );
+ }
+ );
+});