feat: test failure to register service worker
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@ -21,4 +21,3 @@ if (typeof navigator !== "undefined" && "serviceWorker" in navigator) {
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const path = normalize(`${options.csStaticBase}/dist/serviceWorker.js`)
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registerServiceWorker(navigator, path, options)
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}
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}
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@ -1,4 +1,7 @@
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import { JSDOM } from "jsdom"
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// Note: we need to import logger from the root
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// because this is the logger used in logError in ../src/common/util
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import { logger } from "../node_modules/@coder/logger"
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import { registerServiceWorker } from "../src/browser/register"
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const { window } = new JSDOM()
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global.window = (window as unknown) as Window & typeof globalThis
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@ -6,18 +9,22 @@ global.document = window.document
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global.navigator = window.navigator
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describe("register", () => {
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describe("registerServiceWorker", () => {
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const spy = jest.fn()
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let loggerSpy: jest.SpyInstance
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beforeAll(() => {
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// register relies on navigator to be defined globally
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// this is because the code is called on the browser
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// so we're sure it will be defined
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// We have to cast/assert so that TS thinks it's the correct type
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Object.defineProperty(global.navigator, "serviceWorker", {
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value: {
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register: spy,
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register: () => {
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return "hello"
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},
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},
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})
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// global.navigator.serviceWorker.register = (spy as unknown) as ServiceWorkerContainer["register"]
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})
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beforeEach(() => {
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loggerSpy = jest.spyOn(logger, "error")
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})
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afterEach(() => {
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@ -27,7 +34,9 @@ describe("register", () => {
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afterAll(() => {
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jest.restoreAllMocks()
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})
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it("should register a ServiceWorker", () => {
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global.navigator.serviceWorker.register = spy
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// call registerServiceWorker
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const path = "/hello"
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const mockOptions = {
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@ -40,4 +49,23 @@ describe("register", () => {
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expect(spy).toHaveBeenCalled()
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expect(spy).toHaveBeenCalledTimes(1)
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})
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it("should log an error if something goes work", () => {
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const message = "Can't find browser"
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const path = "/hello"
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const mockOptions = {
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base: "",
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csStaticBase: "",
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logLevel: 0,
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}
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global.navigator.serviceWorker.register = () => {
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throw new Error(message)
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}
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registerServiceWorker(navigator, path, mockOptions)
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expect(loggerSpy).toHaveBeenCalled()
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expect(loggerSpy).toHaveBeenCalledTimes(1)
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expect(loggerSpy).toHaveBeenCalledWith(`[Service Worker] failed to register: ${message}`)
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})
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})
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})
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