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Diffstat (limited to '')
-rw-r--r-- | docshell/test/browser/browser_browsing_context_discarded.js | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/docshell/test/browser/browser_browsing_context_discarded.js b/docshell/test/browser/browser_browsing_context_discarded.js new file mode 100644 index 0000000000..a300737d4f --- /dev/null +++ b/docshell/test/browser/browser_browsing_context_discarded.js @@ -0,0 +1,65 @@ +"use strict"; + +const TOPIC = "browsing-context-discarded"; + +async function observeDiscarded(browsingContexts, callback) { + let discarded = []; + + let promise = BrowserUtils.promiseObserved(TOPIC, subject => { + ok(BrowsingContext.isInstance(subject), "subject to be a BrowsingContext"); + discarded.push(subject); + + return browsingContexts.every(item => discarded.includes(item)); + }); + await callback(); + await promise; + + return discarded; +} + +add_task(async function toplevelForNewWindow() { + let win = await BrowserTestUtils.openNewBrowserWindow(); + let browsingContext = win.gBrowser.selectedBrowser.browsingContext; + + await observeDiscarded([win.browsingContext, browsingContext], async () => { + await BrowserTestUtils.closeWindow(win); + }); +}); + +add_task(async function toplevelForNewTab() { + let tab = await BrowserTestUtils.openNewForegroundTab(gBrowser); + let browsingContext = tab.linkedBrowser.browsingContext; + + let discarded = await observeDiscarded([browsingContext], () => { + BrowserTestUtils.removeTab(tab); + }); + + ok( + !discarded.includes(window.browsingContext), + "no notification for the current window's chrome browsing context" + ); +}); + +add_task(async function subframe() { + let tab = await BrowserTestUtils.openNewForegroundTab(gBrowser); + let browsingContext = await SpecialPowers.spawn(tab.linkedBrowser, [], () => { + let iframe = content.document.createElement("iframe"); + content.document.body.appendChild(iframe); + iframe.contentWindow.location = "https://example.com/"; + return iframe.browsingContext; + }); + + let discarded = await observeDiscarded([browsingContext], async () => { + await SpecialPowers.spawn(tab.linkedBrowser, [], () => { + let iframe = content.document.querySelector("iframe"); + iframe.remove(); + }); + }); + + ok( + !discarded.includes(tab.browsingContext), + "no notification for toplevel browsing context" + ); + + BrowserTestUtils.removeTab(tab); +}); |