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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
const { CalendarEventDialogRouteController } = ChromeUtils.importESModule(
"moz-src:///comm/mail/components/calendar/content/calendar-event-dialog-route-controller.mjs"
);
function createFrameScheduler() {
let nextFrame = 0;
const callbacks = new Map();
return {
cancelAnimationFrame(frame) {
callbacks.delete(frame);
},
requestAnimationFrame(callback) {
const frame = ++nextFrame;
callbacks.set(frame, callback);
return frame;
},
get frameCount() {
return callbacks.size;
},
runNextFrame() {
const [frame, callback] = callbacks.entries().next().value;
callbacks.delete(frame);
callback();
},
};
}
add_task(async function test_stale_route_cannot_finish_replacement() {
const scheduler = createFrameScheduler();
const routes = [];
const controller = new CalendarEventDialogRouteController(route => {
routes.push(route);
}, scheduler);
controller.restart();
const firstReady = controller.waitForReady();
Assert.equal(scheduler.frameCount, 1, "One frame starts the first route");
scheduler.runNextFrame();
const firstRoute = routes.shift();
controller.restart();
const secondReady = controller.waitForReady();
Assert.ok(firstRoute.signal.aborted, "The replacement aborts the old route");
Assert.equal(scheduler.frameCount, 1, "One frame starts the replacement");
controller.finish(firstRoute, "ready");
scheduler.runNextFrame();
const secondRoute = routes.shift();
controller.finish(secondRoute, "ready");
Assert.ok(!(await firstReady), "The old route cannot become ready");
Assert.ok(await secondReady, "The replacement route becomes ready");
});
add_task(async function test_disconnect_cancels_scheduled_route() {
const scheduler = createFrameScheduler();
const routes = [];
const controller = new CalendarEventDialogRouteController(route => {
routes.push(route);
}, scheduler);
controller.restart();
const isReady = controller.waitForReady();
controller.disconnect();
Assert.equal(scheduler.frameCount, 0, "Disconnect cancels the route frame");
Assert.ok(!(await isReady), "A disconnected route cannot become ready");
Assert.equal(routes.length, 0, "No route load starts after disconnect");
});