| 1 | import { readFileSync } from "node:fs"; |
| 2 | import vm from "node:vm"; |
| 3 | import test from "node:test"; |
| 4 | import assert from "node:assert/strict"; |
| 5 | |
| 6 | const source = readFileSync(new URL("../js/worker.js", import.meta.url), "utf8"); |
| 7 | function worker(fetch = async () => { throw new Error("offline"); }) { |
| 8 | const listeners = {}; |
| 9 | let activations = 0; |
| 10 | const self = { |
| 11 | registration: { scope: "https://app.example/app/" }, fetch, |
| 12 | addEventListener: (name, fn) => { listeners[name] = fn; }, |
| 13 | skipWaiting: async () => { activations++; }, |
| 14 | }; |
| 15 | vm.runInNewContext(source, { self, URL, Response }); |
| 16 | self.RastrilloPWA.install(); |
| 17 | return { listeners, self, activations: () => activations }; |
| 18 | } |
| 19 | function navigate(w, request = {}) { |
| 20 | let promise; |
| 21 | w.listeners.fetch({ |
| 22 | request: { url: "https://app.example/app/inbox", method: "GET", mode: "navigate", ...request }, |
| 23 | respondWith: (p) => { promise = p; }, |
| 24 | }); |
| 25 | return promise; |
| 26 | } |
| 27 | |
| 28 | test("offline navigation returns a public, non-cacheable fallback", async () => { |
| 29 | const response = await navigate(worker()); |
| 30 | assert.equal(response.status, 503); |
| 31 | assert.equal(response.headers.get("cache-control"), "no-store"); |
| 32 | assert.match(await response.text(), /Connect to the internet/); |
| 33 | }); |
| 34 | |
| 35 | test("HTTP authentication and server errors remain visible", async () => { |
| 36 | for (const status of [401, 403, 500]) { |
| 37 | const w = worker(async (_request, options) => { |
| 38 | assert.equal(options.cache, "no-store"); |
| 39 | return new Response("server response", { status }); |
| 40 | }); |
| 41 | const response = await navigate(w); |
| 42 | assert.equal(response.status, status); |
| 43 | assert.equal(await response.text(), "server response"); |
| 44 | } |
| 45 | }); |
| 46 | |
| 47 | test("API calls, writes, external and out-of-scope navigations are untouched", () => { |
| 48 | const w = worker(() => { assert.fail("must not fetch"); }); |
| 49 | for (const request of [ |
| 50 | { mode: "cors" }, { method: "POST" }, { url: "https://other.example/app/" }, |
| 51 | { url: "https://app.example/another-app/" }, |
| 52 | ]) assert.equal(navigate(w, request), undefined); |
| 53 | }); |
| 54 | |
| 55 | test("activation requires an explicit message from a controlled-scope page", async () => { |
| 56 | const w = worker(); |
| 57 | assert.equal(w.listeners.install, undefined); |
| 58 | assert.equal(w.listeners.activate, undefined); |
| 59 | const send = async (url, type = "rastrillo:pwa:activate") => { |
| 60 | let pending; |
| 61 | w.listeners.message({ data: { type }, source: { url }, waitUntil: (p) => { pending = p; } }); |
| 62 | await pending; |
| 63 | }; |
| 64 | await send("https://elsewhere.example/app/"); |
| 65 | await send("https://app.example/other/"); |
| 66 | await send("https://app.example/app/", "unrelated"); |
| 67 | assert.equal(w.activations(), 0); |
| 68 | await send("https://app.example/app/"); |
| 69 | assert.equal(w.activations(), 1); |
| 70 | assert.throws(() => w.self.RastrilloPWA.install(), /once/); |
| 71 | }); |
| 72 | |
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