| 1 | import { test } from "node:test"; |
| 2 | import assert from "node:assert/strict"; |
| 3 | import { generateKeyPairSync } from "node:crypto"; |
| 4 | import { capabilities, status, enable, reconcile, disable } from "./push.mjs"; |
| 5 | |
| 6 | // Real P-256 points, as a browser would require of applicationServerKey |
| 7 | // (an invalid point is an InvalidAccessError there, not a byte |
| 8 | // mismatch). The browser hands the key back as an ArrayBuffer, so the |
| 9 | // fakes do too. |
| 10 | function realPoint() { |
| 11 | const { publicKey } = generateKeyPairSync("ec", { namedCurve: "prime256v1" }); |
| 12 | const jwk = publicKey.export({ format: "jwk" }); |
| 13 | return Uint8Array.from([4, ...Buffer.from(jwk.x, "base64url"), ...Buffer.from(jwk.y, "base64url")]); |
| 14 | } |
| 15 | const KEY_BYTES = realPoint(); |
| 16 | const KEY = Buffer.from(KEY_BYTES).toString("base64url"); |
| 17 | const OLD_KEY_BYTES = realPoint(); |
| 18 | const asBuffer = (u8) => u8.buffer.slice(u8.byteOffset, u8.byteOffset + u8.byteLength); |
| 19 | |
| 20 | function fakeSub(endpoint, keyBytes) { |
| 21 | return { |
| 22 | endpoint, |
| 23 | options: { applicationServerKey: asBuffer(keyBytes) }, |
| 24 | unsubscribed: false, |
| 25 | toJSON() { return { endpoint, expirationTime: null, keys: { p256dh: "P", auth: "A" } }; }, |
| 26 | async unsubscribe() { this.unsubscribed = true; return true; }, |
| 27 | }; |
| 28 | } |
| 29 | |
| 30 | function fakeRegistration(existing) { |
| 31 | const reg = { |
| 32 | subscribed: [], |
| 33 | pushManager: { |
| 34 | async getSubscription() { return existing; }, |
| 35 | async subscribe(opts) { |
| 36 | assert.equal(opts.userVisibleOnly, true); |
| 37 | assert.deepEqual(Array.from(opts.applicationServerKey), Array.from(KEY_BYTES)); |
| 38 | const s = fakeSub("https://push.example/new", opts.applicationServerKey); |
| 39 | reg.subscribed.push(s); |
| 40 | return s; |
| 41 | }, |
| 42 | }, |
| 43 | }; |
| 44 | return reg; |
| 45 | } |
| 46 | |
| 47 | function env(permission, requested = permission) { |
| 48 | const calls = []; |
| 49 | return { |
| 50 | calls, |
| 51 | Notification: { |
| 52 | permission, |
| 53 | async requestPermission() { calls.push("prompt"); return requested; }, |
| 54 | }, |
| 55 | navigator: { serviceWorker: {} }, |
| 56 | PushManager: function () {}, |
| 57 | }; |
| 58 | } |
| 59 | |
| 60 | const okSave = () => { |
| 61 | const saved = []; |
| 62 | const save = async (b) => { saved.push(b); return { ok: true, status: 204 }; }; |
| 63 | return { saved, save }; |
| 64 | }; |
| 65 | |
| 66 | test("capabilities reports the four booleans", () => { |
| 67 | const c = capabilities({ navigator: { serviceWorker: {}, standalone: true }, PushManager: function () {}, Notification: {} }); |
| 68 | assert.deepEqual(c, { serviceWorker: true, push: true, notifications: true, standalone: true }); |
| 69 | assert.deepEqual(capabilities({}), { serviceWorker: false, push: false, notifications: false, standalone: false }); |
| 70 | }); |
| 71 | |
| 72 | test("enable prompts synchronously inside the gesture, subscribes and saves a projected body", async () => { |
| 73 | const e = env("default", "granted"); |
| 74 | const reg = fakeRegistration(null); |
| 75 | const { saved, save } = okSave(); |
| 76 | const pending = enable({ registration: reg, publicKey: KEY, save }, e); |
| 77 | // Before any await resolves: a prompt after an await is outside the |
| 78 | // user gesture and browsers deny it. |
| 79 | assert.deepEqual(e.calls, ["prompt"]); |
| 80 | const sub = await pending; |
| 81 | assert.ok(sub); |
| 82 | assert.deepEqual(e.calls, ["prompt"]); |
| 83 | assert.equal(saved.length, 1); |
| 84 | assert.deepEqual(saved[0], { |
| 85 | subscription: { endpoint: "https://push.example/new", keys: { p256dh: "P", auth: "A" } }, |
| 86 | publicKey: KEY, |
| 87 | }); |
| 88 | }); |
| 89 | |
| 90 | test("enable resolves null when denied and never subscribes", async () => { |
| 91 | const e = env("default", "denied"); |
| 92 | const reg = fakeRegistration(null); |
| 93 | const { saved, save } = okSave(); |
| 94 | assert.equal(await enable({ registration: reg, publicKey: KEY, save }, e), null); |
| 95 | assert.equal(reg.subscribed.length, 0); |
| 96 | assert.equal(saved.length, 0); |
| 97 | }); |
| 98 | |
| 99 | test("enable re-saves a matching subscription instead of replacing it", async () => { |
| 100 | const e = env("granted"); |
| 101 | const existing = fakeSub("https://push.example/old", KEY_BYTES); |
| 102 | const reg = fakeRegistration(existing); |
| 103 | const { saved, save } = okSave(); |
| 104 | const sub = await enable({ registration: reg, publicKey: KEY, save }, e); |
| 105 | assert.equal(sub, existing); |
| 106 | assert.equal(reg.subscribed.length, 0); |
| 107 | assert.equal(saved.length, 1); |
| 108 | }); |
| 109 | |
| 110 | test("enable rejects when save reports failure, and accepts a bare resolve", async () => { |
| 111 | const e = env("granted"); |
| 112 | await assert.rejects( |
| 113 | enable({ registration: fakeRegistration(null), publicKey: KEY, save: async () => ({ ok: false, status: 500 }) }, e), |
| 114 | /save rejected: 500/, |
| 115 | ); |
| 116 | await assert.rejects( |
| 117 | enable({ registration: fakeRegistration(null), publicKey: KEY, save: async () => { throw new Error("net"); } }, e), |
| 118 | /net/, |
| 119 | ); |
| 120 | const sub = await enable({ registration: fakeRegistration(null), publicKey: KEY, save: async () => undefined }, e); |
| 121 | assert.ok(sub); |
| 122 | }); |
| 123 | |
| 124 | test("reconcile never prompts and re-saves a matching subscription", async () => { |
| 125 | const e = env("granted"); |
| 126 | const existing = fakeSub("https://push.example/old", KEY_BYTES); |
| 127 | const reg = fakeRegistration(existing); |
| 128 | const { saved, save } = okSave(); |
| 129 | const sub = await reconcile({ registration: reg, publicKey: KEY, save }, e); |
| 130 | assert.equal(sub, existing); |
| 131 | assert.deepEqual(e.calls, []); |
| 132 | assert.equal(saved.length, 1); |
| 133 | assert.equal(reg.subscribed.length, 0); |
| 134 | assert.equal("previousEndpoint" in saved[0], false); |
| 135 | }); |
| 136 | |
| 137 | test("reconcile re-subscribes under a new key and names the old endpoint", async () => { |
| 138 | const e = env("granted"); |
| 139 | const existing = fakeSub("https://push.example/old", OLD_KEY_BYTES); |
| 140 | const reg = fakeRegistration(existing); |
| 141 | const { saved, save } = okSave(); |
| 142 | await reconcile({ registration: reg, publicKey: KEY, save }, e); |
| 143 | assert.equal(existing.unsubscribed, true); |
| 144 | assert.equal(reg.subscribed.length, 1); |
| 145 | assert.equal(saved[0].previousEndpoint, "https://push.example/old"); |
| 146 | assert.equal(saved[0].subscription.endpoint, "https://push.example/new"); |
| 147 | }); |
| 148 | |
| 149 | test("reconcile never creates a subscription: enable, disable, reconcile stays disabled", async () => { |
| 150 | const e = env("granted"); |
| 151 | let current = null; |
| 152 | const reg = { |
| 153 | pushManager: { |
| 154 | async getSubscription() { return current; }, |
| 155 | async subscribe(opts) { current = fakeSub("https://push.example/new", new Uint8Array(opts.applicationServerKey)); return current; }, |
| 156 | }, |
| 157 | }; |
| 158 | const { saved, save } = okSave(); |
| 159 | const removed = []; |
| 160 | const remove = async (b) => { removed.push(b.endpoint); return { ok: true }; }; |
| 161 | assert.ok(await enable({ registration: reg, publicKey: KEY, save }, e)); |
| 162 | current.unsubscribe = async () => { current = null; return true; }; |
| 163 | await disable({ registration: reg, remove }); |
| 164 | assert.deepEqual(removed, ["https://push.example/new"]); |
| 165 | // Permission is still "granted"; the next page load must not re-enrol. |
| 166 | assert.equal(await reconcile({ registration: reg, publicKey: KEY, save }, e), null); |
| 167 | assert.equal(current, null); |
| 168 | assert.equal(saved.length, 1, "reconcile saved after disable"); |
| 169 | }); |
| 170 | |
| 171 | test("reconcile does nothing without permission", async () => { |
| 172 | for (const perm of ["default", "denied"]) { |
| 173 | const e = env(perm); |
| 174 | const reg = fakeRegistration(null); |
| 175 | const { saved, save } = okSave(); |
| 176 | assert.equal(await reconcile({ registration: reg, publicKey: KEY, save }, e), null); |
| 177 | assert.equal(saved.length, 0); |
| 178 | assert.deepEqual(e.calls, []); |
| 179 | } |
| 180 | }); |
| 181 | |
| 182 | test("status reads permission and subscription", async () => { |
| 183 | const existing = fakeSub("https://push.example/x", KEY_BYTES); |
| 184 | const s = await status(fakeRegistration(existing), env("granted")); |
| 185 | assert.equal(s.permission, "granted"); |
| 186 | assert.equal(s.subscription, existing); |
| 187 | }); |
| 188 | |
| 189 | test("disable removes server-side first, then the browser subscription", async () => { |
| 190 | const existing = fakeSub("https://push.example/x", KEY_BYTES); |
| 191 | const order = []; |
| 192 | const remove = async (b) => { order.push("remove:" + b.endpoint); return { ok: true }; }; |
| 193 | existing.unsubscribe = async () => { order.push("unsubscribe"); return true; }; |
| 194 | await disable({ registration: fakeRegistration(existing), remove }); |
| 195 | assert.deepEqual(order, ["remove:https://push.example/x", "unsubscribe"]); |
| 196 | }); |
| 197 | |
| 198 | test("disable keeps the browser subscription when remove fails", async () => { |
| 199 | const existing = fakeSub("https://push.example/x", KEY_BYTES); |
| 200 | await assert.rejects( |
| 201 | disable({ registration: fakeRegistration(existing), remove: async () => ({ ok: false, status: 500 }) }), |
| 202 | /remove rejected/, |
| 203 | ); |
| 204 | assert.equal(existing.unsubscribed, false); |
| 205 | }); |
| 206 | |
| 207 | test("disable is a no-op without a subscription", async () => { |
| 208 | let called = false; |
| 209 | await disable({ registration: fakeRegistration(null), remove: async () => { called = true; } }); |
| 210 | assert.equal(called, false); |
| 211 | }); |
| 212 | |
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