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feat: test failure to register service worker

This commit is contained in:
Joe Previte 2021-02-11 15:23:07 -07:00
parent a9f88affa9
commit 44b9874fbe
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GPG Key ID: 2C91590C6B742C24
2 changed files with 61 additions and 34 deletions

View File

@ -21,4 +21,3 @@ if (typeof navigator !== "undefined" && "serviceWorker" in navigator) {
const path = normalize(`${options.csStaticBase}/dist/serviceWorker.js`)
registerServiceWorker(navigator, path, options)
}
}

View File

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