mirror of
https://github.com/vector-im/element-web.git
synced 2024-11-25 18:08:14 +08:00
247 lines
9.1 KiB
TypeScript
247 lines
9.1 KiB
TypeScript
/*
|
|
Copyright 2024 New Vector Ltd.
|
|
Copyright 2023 The Matrix.org Foundation C.I.C.
|
|
|
|
SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only
|
|
Please see LICENSE files in the repository root for full details.
|
|
*/
|
|
|
|
import { checkSessionLockFree, getSessionLock, SESSION_LOCK_CONSTANTS } from "../../../src/utils/SessionLock";
|
|
import { resetJsDomAfterEach } from "../../test-utils";
|
|
|
|
describe("SessionLock", () => {
|
|
const otherWindows: Array<Window> = [];
|
|
|
|
beforeEach(() => {
|
|
jest.useFakeTimers({ now: 1000 });
|
|
});
|
|
|
|
afterEach(() => {
|
|
// shut down other windows created by `createWindow`
|
|
otherWindows.forEach((window) => window.close());
|
|
otherWindows.splice(0);
|
|
});
|
|
|
|
resetJsDomAfterEach();
|
|
|
|
it("A single instance starts up normally", async () => {
|
|
const onNewInstance = jest.fn();
|
|
const result = await getSessionLock(onNewInstance);
|
|
expect(result).toBe(true);
|
|
expect(onNewInstance).not.toHaveBeenCalled();
|
|
});
|
|
|
|
it("A second instance starts up normally when the first shut down cleanly", async () => {
|
|
// first instance starts...
|
|
const onNewInstance1 = jest.fn();
|
|
expect(await getSessionLock(onNewInstance1)).toBe(true);
|
|
expect(onNewInstance1).not.toHaveBeenCalled();
|
|
|
|
// ... and navigates away
|
|
window.dispatchEvent(new Event("pagehide", {}));
|
|
|
|
// second instance starts as normal
|
|
expect(checkSessionLockFree()).toBe(true);
|
|
const onNewInstance2 = jest.fn();
|
|
expect(await getSessionLock(onNewInstance2)).toBe(true);
|
|
|
|
expect(onNewInstance1).not.toHaveBeenCalled();
|
|
expect(onNewInstance2).not.toHaveBeenCalled();
|
|
});
|
|
|
|
it("A second instance starts up *eventually* when the first terminated uncleanly", async () => {
|
|
// first instance starts...
|
|
const onNewInstance1 = jest.fn();
|
|
expect(await getSessionLock(onNewInstance1)).toBe(true);
|
|
expect(onNewInstance1).not.toHaveBeenCalled();
|
|
expect(checkSessionLockFree()).toBe(false);
|
|
|
|
// and pings the timer after 5 seconds
|
|
jest.advanceTimersByTime(5000);
|
|
expect(checkSessionLockFree()).toBe(false);
|
|
|
|
// oops, now it dies. We simulate this by forcibly clearing the timers.
|
|
// For some reason `jest.clearAllTimers` also resets the simulated time, so preserve that
|
|
const time = Date.now();
|
|
jest.clearAllTimers();
|
|
jest.setSystemTime(time);
|
|
expect(checkSessionLockFree()).toBe(false);
|
|
|
|
// time advances a bit more
|
|
jest.advanceTimersByTime(5000);
|
|
expect(checkSessionLockFree()).toBe(false);
|
|
|
|
// second instance tries to start. This should block for 25 more seconds
|
|
const onNewInstance2 = jest.fn();
|
|
let session2Result: boolean | undefined;
|
|
getSessionLock(onNewInstance2).then((res) => {
|
|
session2Result = res;
|
|
});
|
|
|
|
// after another 24.5 seconds, we are still waiting
|
|
jest.advanceTimersByTime(24500);
|
|
expect(session2Result).toBe(undefined);
|
|
expect(checkSessionLockFree()).toBe(false);
|
|
|
|
// another 500ms and we get the lock
|
|
await jest.advanceTimersByTimeAsync(500);
|
|
expect(session2Result).toBe(true);
|
|
expect(checkSessionLockFree()).toBe(false); // still false, because the new session has claimed it
|
|
|
|
expect(onNewInstance1).not.toHaveBeenCalled();
|
|
expect(onNewInstance2).not.toHaveBeenCalled();
|
|
});
|
|
|
|
it("A second instance waits for the first to shut down", async () => {
|
|
// first instance starts. Once it gets the shutdown signal, it will wait two seconds and then release the lock.
|
|
await getSessionLock(
|
|
() =>
|
|
new Promise<void>((resolve) => {
|
|
setTimeout(resolve, 2000, 0);
|
|
}),
|
|
);
|
|
|
|
// second instance tries to start, but should block
|
|
const { window: window2, getSessionLock: getSessionLock2 } = buildNewContext();
|
|
let session2Result: boolean | undefined;
|
|
getSessionLock2(async () => {}).then((res) => {
|
|
session2Result = res;
|
|
});
|
|
await jest.advanceTimersByTimeAsync(100);
|
|
// should still be blocking
|
|
expect(session2Result).toBe(undefined);
|
|
|
|
await jest.advanceTimersByTimeAsync(2000);
|
|
await jest.advanceTimersByTimeAsync(0);
|
|
|
|
// session 2 now gets the lock
|
|
expect(session2Result).toBe(true);
|
|
window2.close();
|
|
});
|
|
|
|
it("If a third instance starts while we are waiting, we give up immediately", async () => {
|
|
// first instance starts. It will never release the lock.
|
|
await getSessionLock(() => new Promise(() => {}));
|
|
|
|
// first instance should ping the timer after 5 seconds
|
|
jest.advanceTimersByTime(5000);
|
|
|
|
// second instance starts
|
|
const { getSessionLock: getSessionLock2 } = buildNewContext();
|
|
let session2Result: boolean | undefined;
|
|
const onNewInstance2 = jest.fn();
|
|
getSessionLock2(onNewInstance2).then((res) => {
|
|
session2Result = res;
|
|
});
|
|
|
|
await jest.advanceTimersByTimeAsync(100);
|
|
// should still be blocking
|
|
expect(session2Result).toBe(undefined);
|
|
|
|
// third instance starts
|
|
const { getSessionLock: getSessionLock3 } = buildNewContext();
|
|
getSessionLock3(async () => {});
|
|
await jest.advanceTimersByTimeAsync(0);
|
|
|
|
// session 2 should have given up
|
|
expect(session2Result).toBe(false);
|
|
expect(onNewInstance2).toHaveBeenCalled();
|
|
});
|
|
|
|
it("If two new instances start concurrently, only one wins", async () => {
|
|
// first instance starts. Once it gets the shutdown signal, it will wait two seconds and then release the lock.
|
|
await getSessionLock(async () => {
|
|
await new Promise<void>((resolve) => {
|
|
setTimeout(resolve, 2000, 0);
|
|
});
|
|
});
|
|
|
|
// first instance should ping the timer after 5 seconds
|
|
jest.advanceTimersByTime(5000);
|
|
|
|
// two new instances start at once
|
|
const { getSessionLock: getSessionLock2 } = buildNewContext();
|
|
let session2Result: boolean | undefined;
|
|
getSessionLock2(async () => {}).then((res) => {
|
|
session2Result = res;
|
|
});
|
|
|
|
const { getSessionLock: getSessionLock3 } = buildNewContext();
|
|
let session3Result: boolean | undefined;
|
|
getSessionLock3(async () => {}).then((res) => {
|
|
session3Result = res;
|
|
});
|
|
|
|
await jest.advanceTimersByTimeAsync(100);
|
|
// session 3 still be blocking. Session 2 should have given up.
|
|
expect(session2Result).toBe(false);
|
|
expect(session3Result).toBe(undefined);
|
|
|
|
await jest.advanceTimersByTimeAsync(2000);
|
|
await jest.advanceTimersByTimeAsync(0);
|
|
|
|
// session 3 now gets the lock
|
|
expect(session2Result).toBe(false);
|
|
expect(session3Result).toBe(true);
|
|
});
|
|
|
|
/** build a new Window in the same domain as the current one.
|
|
*
|
|
* We do this by constructing an iframe, which gets its own Window object.
|
|
*/
|
|
function createWindow() {
|
|
const iframe = window.document.createElement("iframe");
|
|
window.document.body.appendChild(iframe);
|
|
const window2: any = iframe.contentWindow;
|
|
|
|
otherWindows.push(window2);
|
|
|
|
// make the new Window use the same jest fake timers as us
|
|
for (const m of ["setTimeout", "clearTimeout", "setInterval", "clearInterval", "Date"]) {
|
|
// @ts-ignore
|
|
window2[m] = global[m];
|
|
}
|
|
return window2;
|
|
}
|
|
|
|
/**
|
|
* Instantiate `getSessionLock` in a new context (ie, using a different global `window`).
|
|
*
|
|
* The new window will share the same fake timer impl as the current context.
|
|
*
|
|
* @returns the new window and (a wrapper for) getSessionLock in the new context.
|
|
*/
|
|
function buildNewContext(): {
|
|
window: Window;
|
|
getSessionLock: (onNewInstance: () => Promise<void>) => Promise<boolean>;
|
|
} {
|
|
const window2 = createWindow();
|
|
|
|
// import the dependencies of getSessionLock into the new context
|
|
// eslint-disable-next-line @typescript-eslint/no-require-imports
|
|
window2._uuid = require("uuid");
|
|
// eslint-disable-next-line @typescript-eslint/no-require-imports
|
|
window2._logger = require("matrix-js-sdk/src/logger");
|
|
window2.SESSION_LOCK_CONSTANTS = SESSION_LOCK_CONSTANTS;
|
|
|
|
// now, define getSessionLock as a global
|
|
window2.eval(String(getSessionLock));
|
|
|
|
// return a function that will call it
|
|
function callGetSessionLock(onNewInstance: () => Promise<void>): Promise<boolean> {
|
|
// import the callback into the context
|
|
window2._getSessionLockCallback = onNewInstance;
|
|
|
|
// start the function
|
|
try {
|
|
return window2.eval(`getSessionLock(_getSessionLockCallback)`);
|
|
} finally {
|
|
// we can now clear the callback
|
|
delete window2._getSessionLockCallback;
|
|
}
|
|
}
|
|
|
|
return { window: window2, getSessionLock: callGetSessionLock };
|
|
}
|
|
});
|