forked from mirrors/gecko-dev
74 lines
2.5 KiB
JavaScript
74 lines
2.5 KiB
JavaScript
/* Any copyright is dedicated to the Public Domain.
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http://creativecommons.org/publicdomain/zero/1.0/ */
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const TEST_URL =
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"http://mochi.test:8888/browser/browser/components/" +
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"sessionstore/test/browser_637020_slow.sjs";
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const TEST_STATE = {
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windows: [
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{
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tabs: [
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{ entries: [{ url: "about:mozilla", triggeringPrincipal_base64 }] },
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{ entries: [{ url: "about:robots", triggeringPrincipal_base64 }] },
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],
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},
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{
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tabs: [
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{ entries: [{ url: TEST_URL, triggeringPrincipal_base64 }] },
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{ entries: [{ url: TEST_URL, triggeringPrincipal_base64 }] },
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],
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},
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],
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};
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/**
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* This test ensures that windows that have just been restored will be marked
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* as dirty, otherwise _getCurrentState() might ignore them when collecting
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* state for the first time and we'd just save them as empty objects.
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*
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* The dirty state acts as a cache to not collect data from all windows all the
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* time, so at the beginning, each window must be dirty so that we collect
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* their state at least once.
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*/
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add_task(async function test() {
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// Wait until the new window has been opened.
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let promiseWindow = new Promise(resolve => {
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Services.obs.addObserver(function onOpened(subject) {
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Services.obs.removeObserver(onOpened, "domwindowopened");
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resolve(subject);
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}, "domwindowopened");
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});
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// Set the new browser state that will
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// restore a window with two slowly loading tabs.
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let backupState = SessionStore.getBrowserState();
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SessionStore.setBrowserState(JSON.stringify(TEST_STATE));
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let win = await promiseWindow;
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let restoring = promiseWindowRestoring(win);
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let restored = promiseWindowRestored(win);
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await restoring;
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await restored;
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// The window has now been opened. Check the state that is returned,
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// this should come from the cache while the window isn't restored, yet.
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info("the window has been opened");
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checkWindows();
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// The history has now been restored and the tabs are loading. The data must
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// now come from the window, if it's correctly been marked as dirty before.
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await new Promise(resolve => whenDelayedStartupFinished(win, resolve));
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info("the delayed startup has finished");
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checkWindows();
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// Cleanup.
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await BrowserTestUtils.closeWindow(win);
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await promiseBrowserState(backupState);
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});
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function checkWindows() {
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let state = JSON.parse(SessionStore.getBrowserState());
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is(state.windows[0].tabs.length, 2, "first window has two tabs");
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is(state.windows[1].tabs.length, 2, "second window has two tabs");
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}
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