gecko-dev/browser/components/sessionstore/test/browser_637020.js
Mike Conley 8cdd233ac6 Bug 1171708 - Fix SessionStore tests to account for async window flushing. r=billm
--HG--
extra : commitid : GukwXUsbANw
extra : rebase_source : 7fd34f268859887633c39db31504b9237126a55b
extra : source : 32196b22b4544981f5658ce028e7566bff3fbca4
2015-11-16 16:17:29 -05:00

67 lines
2.2 KiB
JavaScript

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