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Test Info:
/* Any copyright is dedicated to the Public Domain.
"use strict";
add_task(async function () {
let tab = (gBrowser.selectedTab = BrowserTestUtils.addTab(
gBrowser,
"about:preferences"
));
let browser = tab.linkedBrowser;
let labelChanges = 0;
let attrModifiedListener = event => {
if (event.detail.changed.includes("label")) {
labelChanges++;
}
};
tab.addEventListener("TabAttrModified", attrModifiedListener);
await BrowserTestUtils.browserLoaded(browser);
is(labelChanges, 1, "number of label changes during initial load");
isnot(tab.label, "", "about:preferences tab label isn't empty");
isnot(
tab.label,
"about:preferences",
"about:preferences tab label isn't the URI"
);
is(
tab.label,
browser.contentTitle,
"about:preferences tab label matches browser.contentTitle"
);
labelChanges = 0;
browser.reload();
await BrowserTestUtils.browserLoaded(browser);
is(labelChanges, 0, "number of label changes during reload");
tab.removeEventListener("TabAttrModified", attrModifiedListener);
gBrowser.removeTab(tab);
});