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refactor: add custom mock for serviceWorker test
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,44 +1,92 @@ | ||
| import makeServiceWorkerEnv = require("service-worker-mock") | ||
| const makeFetchMock = require("service-worker-mock/fetch") | ||
| interface MockEvent { | ||
| claim: jest.Mock<any, any> | ||
| waitUntil?: jest.Mock<any, any> | ||
| } | ||
|
|
||
| interface Listener { | ||
| event: string | ||
| cb: (event?: MockEvent) => void | ||
| } | ||
|
|
||
| describe("serviceWorker", () => { | ||
| let listeners: Listener[] = [] | ||
| let spy: jest.SpyInstance | ||
| beforeEach(() => { | ||
| Object.assign( | ||
| global, | ||
| makeServiceWorkerEnv(), | ||
| makeFetchMock(), | ||
| // If you're using sinon ur similar you'd probably use below instead of makeFetchMock | ||
| // fetch: sinon.stub().returns(Promise.resolve()) | ||
| ) | ||
| jest.resetModules() | ||
| let claimSpy: jest.Mock<any, any> | ||
| let waitUntilSpy: jest.Mock<any, any> | ||
|
|
||
| function emit(event: string) { | ||
| listeners | ||
| .filter((listener) => listener.event === event) | ||
| .forEach((listener) => { | ||
| switch (event) { | ||
| case "activate": | ||
| listener.cb({ | ||
| claim: jest.fn(), | ||
| waitUntil: jest.fn(() => waitUntilSpy()), | ||
| }) | ||
| break | ||
| default: | ||
| listener.cb() | ||
| } | ||
| }) | ||
| } | ||
|
|
||
| beforeEach(() => { | ||
| claimSpy = jest.fn() | ||
| spy = jest.spyOn(console, "log") | ||
| waitUntilSpy = jest.fn() | ||
|
|
||
| Object.assign(global, { | ||
| self: global, | ||
| addEventListener: (event: string, cb: () => void) => { | ||
| listeners.push({ event, cb }) | ||
| }, | ||
| clients: { | ||
| claim: claimSpy.mockResolvedValue("claimed"), | ||
| }, | ||
| }) | ||
| }) | ||
|
|
||
| afterEach(() => { | ||
| jest.restoreAllMocks() | ||
| spy.mockRestore() | ||
| jest.resetModules() | ||
| spy.mockClear() | ||
| claimSpy.mockClear() | ||
|
|
||
| // Clear all the listeners | ||
| listeners = [] | ||
| }) | ||
|
|
||
| it("should add listeners", () => { | ||
| it("should add 3 listeners: install, activate and fetch", () => { | ||
| require("../src/browser/serviceWorker.ts") | ||
| const _self = (self as unknown) as WorkerGlobalScope | ||
| expect(_self.listeners.get("install")).toBeDefined() | ||
| expect(_self.listeners.get("activate")).toBeDefined() | ||
| expect(_self.listeners.get("fetch")).toBeDefined() | ||
| const listenerEventNames = listeners.map((listener) => listener.event) | ||
|
|
||
| expect(listeners).toHaveLength(3) | ||
| expect(listenerEventNames).toContain("install") | ||
| expect(listenerEventNames).toContain("activate") | ||
| expect(listenerEventNames).toContain("fetch") | ||
| }) | ||
|
|
||
| it("should call the proper callbacks for 'install'", async () => { | ||
| require("../src/browser/serviceWorker.ts") | ||
| await self.trigger("install") | ||
| emit("install") | ||
| expect(spy).toHaveBeenCalledWith("[Service Worker] installed") | ||
| expect(spy).toHaveBeenCalledTimes(1) | ||
| }) | ||
|
|
||
| it("should do nothing when 'fetch' is called", async () => { | ||
| require("../src/browser/serviceWorker.ts") | ||
| emit("fetch") | ||
| expect(spy).not.toHaveBeenCalled() | ||
| }) | ||
|
|
||
| it("should call the proper callbacks for 'activate'", async () => { | ||
| require("../src/browser/serviceWorker.ts") | ||
| await self.trigger("activate") | ||
| emit("activate") | ||
|
|
||
| // Activate serviceWorker | ||
| expect(spy).toHaveBeenCalledWith("[Service Worker] activated") | ||
| expect(waitUntilSpy).toHaveBeenCalled() | ||
| expect(claimSpy).toHaveBeenCalled() | ||
| }) | ||
| }) |
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