mirror of
https://github.com/element-hq/element-web
synced 2024-11-22 17:25:50 +03:00
491f0cd08a
* Copyright headers 1 * Licence headers 2 * Copyright Headers 3 * Copyright Headers 4 * Copyright Headers 5 * Copyright Headers 6 * Copyright headers 7 * Add copyright headers for html and config file * Replace license files and update package.json * Update with CLA * lint
100 lines
3.4 KiB
TypeScript
100 lines
3.4 KiB
TypeScript
/*
|
|
Copyright 2024 New Vector Ltd.
|
|
Copyright 2021 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 { Singleflight } from "../../src/utils/Singleflight";
|
|
|
|
describe("Singleflight", () => {
|
|
afterEach(() => {
|
|
Singleflight.forgetAll();
|
|
});
|
|
|
|
it("should throw for bad context variables", () => {
|
|
const permutations: [Object | null, string | null][] = [
|
|
[null, null],
|
|
[{}, null],
|
|
[null, "test"],
|
|
];
|
|
for (const p of permutations) {
|
|
expect(() => Singleflight.for(p[0], p[1])).toThrow("An instance and key must be supplied");
|
|
}
|
|
});
|
|
|
|
it("should execute the function once", () => {
|
|
const instance = {};
|
|
const key = "test";
|
|
const val = {}; // unique object for reference check
|
|
const fn = jest.fn().mockReturnValue(val);
|
|
const sf = Singleflight.for(instance, key);
|
|
const r1 = sf.do(fn);
|
|
expect(r1).toBe(val);
|
|
expect(fn.mock.calls.length).toBe(1);
|
|
const r2 = sf.do(fn);
|
|
expect(r2).toBe(val);
|
|
expect(fn.mock.calls.length).toBe(1);
|
|
});
|
|
|
|
it("should execute the function once, even with new contexts", () => {
|
|
const instance = {};
|
|
const key = "test";
|
|
const val = {}; // unique object for reference check
|
|
const fn = jest.fn().mockReturnValue(val);
|
|
let sf = Singleflight.for(instance, key);
|
|
const r1 = sf.do(fn);
|
|
expect(r1).toBe(val);
|
|
expect(fn.mock.calls.length).toBe(1);
|
|
sf = Singleflight.for(instance, key); // RESET FOR TEST
|
|
const r2 = sf.do(fn);
|
|
expect(r2).toBe(val);
|
|
expect(fn.mock.calls.length).toBe(1);
|
|
});
|
|
|
|
it("should execute the function twice if the result was forgotten", () => {
|
|
const instance = {};
|
|
const key = "test";
|
|
const val = {}; // unique object for reference check
|
|
const fn = jest.fn().mockReturnValue(val);
|
|
const sf = Singleflight.for(instance, key);
|
|
const r1 = sf.do(fn);
|
|
expect(r1).toBe(val);
|
|
expect(fn.mock.calls.length).toBe(1);
|
|
sf.forget();
|
|
const r2 = sf.do(fn);
|
|
expect(r2).toBe(val);
|
|
expect(fn.mock.calls.length).toBe(2);
|
|
});
|
|
|
|
it("should execute the function twice if the instance was forgotten", () => {
|
|
const instance = {};
|
|
const key = "test";
|
|
const val = {}; // unique object for reference check
|
|
const fn = jest.fn().mockReturnValue(val);
|
|
const sf = Singleflight.for(instance, key);
|
|
const r1 = sf.do(fn);
|
|
expect(r1).toBe(val);
|
|
expect(fn.mock.calls.length).toBe(1);
|
|
Singleflight.forgetAllFor(instance);
|
|
const r2 = sf.do(fn);
|
|
expect(r2).toBe(val);
|
|
expect(fn.mock.calls.length).toBe(2);
|
|
});
|
|
|
|
it("should execute the function twice if everything was forgotten", () => {
|
|
const instance = {};
|
|
const key = "test";
|
|
const val = {}; // unique object for reference check
|
|
const fn = jest.fn().mockReturnValue(val);
|
|
const sf = Singleflight.for(instance, key);
|
|
const r1 = sf.do(fn);
|
|
expect(r1).toBe(val);
|
|
expect(fn.mock.calls.length).toBe(1);
|
|
Singleflight.forgetAll();
|
|
const r2 = sf.do(fn);
|
|
expect(r2).toBe(val);
|
|
expect(fn.mock.calls.length).toBe(2);
|
|
});
|
|
});
|