forked from mirrors/gecko-dev
f9f5914039
# ignore-this-changeset Differential Revision: https://phabricator.services.mozilla.com/D36041 --HG-- extra : source : 96b3895a3b2aa2fcb064c85ec5857b7216884556
28 lines
916 B
JavaScript
28 lines
916 B
JavaScript
// This test ensures that only one command update happens when switching tabs.
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"use strict";
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add_task(async function() {
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const uri = "data:text/html,<body><input>";
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let tab1 = await BrowserTestUtils.openNewForegroundTab(gBrowser, uri);
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let tab2 = await BrowserTestUtils.openNewForegroundTab(gBrowser, uri);
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let updates = [];
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function countUpdates(event) {
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updates.push(new Error().stack);
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}
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let updater = document.getElementById("editMenuCommandSetAll");
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updater.addEventListener("commandupdate", countUpdates, true);
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await BrowserTestUtils.switchTab(gBrowser, tab1);
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is(updates.length, 1, "only one command update per tab switch");
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if (updates.length > 1) {
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for (let stack of updates) {
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info("Update stack:\n" + stack);
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}
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}
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updater.removeEventListener("commandupdate", countUpdates, true);
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BrowserTestUtils.removeTab(tab1);
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BrowserTestUtils.removeTab(tab2);
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});
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