diff options
Diffstat (limited to 'browser/base/content/test/tabs/browser_tabswitch_updatecommands.js')
-rw-r--r-- | browser/base/content/test/tabs/browser_tabswitch_updatecommands.js | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/browser/base/content/test/tabs/browser_tabswitch_updatecommands.js b/browser/base/content/test/tabs/browser_tabswitch_updatecommands.js new file mode 100644 index 0000000000..b5d2762eec --- /dev/null +++ b/browser/base/content/test/tabs/browser_tabswitch_updatecommands.js @@ -0,0 +1,28 @@ +// This test ensures that only one command update happens when switching tabs. + +"use strict"; + +add_task(async function () { + const uri = "data:text/html,<body><input>"; + let tab1 = await BrowserTestUtils.openNewForegroundTab(gBrowser, uri); + let tab2 = await BrowserTestUtils.openNewForegroundTab(gBrowser, uri); + + let updates = []; + function countUpdates(event) { + updates.push(new Error().stack); + } + let updater = document.getElementById("editMenuCommandSetAll"); + updater.addEventListener("commandupdate", countUpdates, true); + await BrowserTestUtils.switchTab(gBrowser, tab1); + + is(updates.length, 1, "only one command update per tab switch"); + if (updates.length > 1) { + for (let stack of updates) { + info("Update stack:\n" + stack); + } + } + + updater.removeEventListener("commandupdate", countUpdates, true); + BrowserTestUtils.removeTab(tab1); + BrowserTestUtils.removeTab(tab2); +}); |