| 1 | import { afterEach, beforeEach, describe, expect, it, vi } from "vitest"; |
| 2 | import type { Env } from "./env"; |
| 3 | import { |
| 4 | FirebaseFenceError, |
| 5 | deleteFirebaseCrashGroup, |
| 6 | readFirebaseCrashGroup, |
| 7 | resetFirebaseAuthForTests, |
| 8 | writeFirebaseCrashGroup, |
| 9 | writeFirebaseGroupMeta, |
| 10 | type FirebaseCrashGroupMeta, |
| 11 | } from "./firebase_rtdb"; |
| 12 | |
| 13 | const oauthURL = "https://oauth2.googleapis.com/token"; |
| 14 | const databaseHost = "reasonix-test.asia-southeast1.firebasedatabase.app"; |
| 15 | |
| 16 | async function privateKeyPEM(): Promise<string> { |
| 17 | const pair = await crypto.subtle.generateKey( |
| 18 | { name: "RSASSA-PKCS1-v1_5", modulusLength: 2048, publicExponent: new Uint8Array([1, 0, 1]), hash: "SHA-256" }, |
| 19 | true, |
| 20 | ["sign", "verify"], |
| 21 | ) as CryptoKeyPair; |
| 22 | const bytes = new Uint8Array(await crypto.subtle.exportKey("pkcs8", pair.privateKey) as ArrayBuffer); |
| 23 | let binary = ""; |
| 24 | for (const byte of bytes) binary += String.fromCharCode(byte); |
| 25 | const encoded = btoa(binary).match(/.{1,64}/g)?.join("\n") ?? ""; |
| 26 | return `-----BEGIN PRIVATE KEY-----\n${encoded}\n-----END PRIVATE KEY-----`; |
| 27 | } |
| 28 | |
| 29 | const meta: FirebaseCrashGroupMeta = { |
| 30 | fingerprint: "a".repeat(64), kind: "crash", count: 1, |
| 31 | firstSeen: "2026-08-25T00:00:00.000Z", lastSeen: "2026-08-25T00:00:00.000Z", |
| 32 | firstVersion: "v1.0.0", lastVersion: "v1.0.0", status: "open", title: "boom", |
| 33 | source: "go", label: "panic", errorType: "error", topFrame: "main.go:<n>", severity: "high", |
| 34 | lastOS: "linux", lastArch: "amd64", lastBuildCommit: "", lastChannel: "stable", regressedAt: "", |
| 35 | }; |
| 36 | |
| 37 | async function firebaseEnv(): Promise<Env> { |
| 38 | return { |
| 39 | FIREBASE_DATABASE_URL: `https://${databaseHost}`, |
| 40 | FIREBASE_CLIENT_EMAIL: "crash-writer@example.iam.gserviceaccount.com", |
| 41 | FIREBASE_PRIVATE_KEY: await privateKeyPEM(), |
| 42 | } as Env; |
| 43 | } |
| 44 | |
| 45 | type Call = { url: string; init?: RequestInit }; |
| 46 | |
| 47 | function storeFetcher(initial: Record<string, unknown> = {}) { |
| 48 | const values = new Map(Object.entries(initial)); |
| 49 | const versions = new Map<string, number>(); |
| 50 | const calls: Call[] = []; |
| 51 | const pathOf = (url: string) => new URL(url).pathname.replace(/^\//, "").replace(/\.json$/, ""); |
| 52 | const fetcher: typeof fetch = async (input, init) => { |
| 53 | const url = String(input); |
| 54 | calls.push({ url, init }); |
| 55 | if (url === oauthURL) return Response.json({ access_token: "token", expires_in: 3600 }); |
| 56 | const path = pathOf(url); |
| 57 | const method = init?.method ?? "GET"; |
| 58 | const version = versions.get(path) ?? 1; |
| 59 | if (method === "GET") { |
| 60 | return Response.json(values.get(path) ?? null, { headers: { etag: `"${version}"` } }); |
| 61 | } |
| 62 | const headers = new Headers(init?.headers); |
| 63 | if (headers.has("If-Match") && headers.get("If-Match") !== `"${version}"`) { |
| 64 | return Response.json(values.get(path) ?? null, { status: 412, headers: { etag: `"${version}"` } }); |
| 65 | } |
| 66 | if (method === "DELETE") values.delete(path); |
| 67 | else values.set(path, JSON.parse(String(init?.body)) as unknown); |
| 68 | versions.set(path, version + 1); |
| 69 | return new Response(null, { status: 204 }); |
| 70 | }; |
| 71 | return { fetcher, calls, values, versions }; |
| 72 | } |
| 73 | |
| 74 | describe("Firebase Realtime Database conditional delivery", () => { |
| 75 | beforeEach(() => resetFirebaseAuthForTests()); |
| 76 | afterEach(() => { vi.useRealTimers(); resetFirebaseAuthForTests(); }); |
| 77 | |
| 78 | it("coalesces OAuth and writes only meta, first, and one ring slot with ETags", async () => { |
| 79 | const env = await firebaseEnv(); |
| 80 | const store = storeFetcher(); |
| 81 | const sample = { eventId: "b".repeat(32), receivedAt: meta.firstSeen, message: "sanitized" }; |
| 82 | await Promise.all([ |
| 83 | writeFirebaseCrashGroup(env, meta, sample, 0, true, 1, 1, undefined, store.fetcher), |
| 84 | writeFirebaseCrashGroup(env, { ...meta, count: 2 }, sample, 1, false, 2, 1, undefined, store.fetcher), |
| 85 | ]); |
| 86 | expect(store.calls.filter((call) => call.url === oauthURL)).toHaveLength(1); |
| 87 | const databaseCalls = store.calls.filter((call) => new URL(call.url).hostname === databaseHost); |
| 88 | expect(databaseCalls.every((call) => !call.url.includes(`/groups/${meta.fingerprint}.json`))).toBe(true); |
| 89 | const puts = databaseCalls.filter((call) => call.init?.method === "PUT"); |
| 90 | expect(puts.length).toBeGreaterThanOrEqual(4); |
| 91 | expect(puts.every((call) => new Headers(call.init?.headers).has("If-Match"))).toBe(true); |
| 92 | expect(puts.every((call) => call.url.endsWith("?print=silent"))).toBe(true); |
| 93 | expect(JSON.stringify([...store.values.values()])).not.toContain("installId"); |
| 94 | }); |
| 95 | |
| 96 | it("retries a 412 at most through a fresh ETag and fences a stale generation", async () => { |
| 97 | const env = await firebaseEnv(); |
| 98 | const store = storeFetcher(); |
| 99 | let injected = false; |
| 100 | const fetcher: typeof fetch = async (input, init) => { |
| 101 | if (String(input) !== oauthURL && init?.method === "PUT" && !injected) { |
| 102 | injected = true; |
| 103 | return Response.json({ writerGeneration: 0 }, { status: 412, headers: { etag: '"2"' } }); |
| 104 | } |
| 105 | return store.fetcher(input, init); |
| 106 | }; |
| 107 | await writeFirebaseCrashGroup( |
| 108 | env, meta, { eventId: "c".repeat(32), receivedAt: meta.firstSeen }, 0, true, 2, 1, undefined, fetcher, |
| 109 | ); |
| 110 | expect(injected).toBe(true); |
| 111 | |
| 112 | resetFirebaseAuthForTests(); |
| 113 | const metaPath = `groups/${meta.fingerprint}/meta`; |
| 114 | const fenced = storeFetcher({ [metaPath]: { ...meta, writerGeneration: 11, sampleEpoch: 1 } }); |
| 115 | await expect(writeFirebaseCrashGroup( |
| 116 | env, meta, { eventId: "d".repeat(32), receivedAt: meta.firstSeen }, 0, false, 10, 1, undefined, |
| 117 | fenced.fetcher, |
| 118 | )).rejects.toBeInstanceOf(FirebaseFenceError); |
| 119 | expect(fenced.calls.filter((call) => call.init?.method === "PUT")).toHaveLength(0); |
| 120 | }); |
| 121 | |
| 122 | it("refreshes once after 401 and never includes credential bodies in errors", async () => { |
| 123 | const env = await firebaseEnv(); |
| 124 | let tokenRequests = 0; |
| 125 | const store = storeFetcher(); |
| 126 | let rejected = false; |
| 127 | const fetcher: typeof fetch = async (input, init) => { |
| 128 | if (String(input) === oauthURL) { |
| 129 | tokenRequests++; |
| 130 | return Response.json({ access_token: `token-${tokenRequests}`, expires_in: 3600 }); |
| 131 | } |
| 132 | if (!rejected) { rejected = true; return new Response("expired", { status: 401 }); } |
| 133 | return store.fetcher(input, init); |
| 134 | }; |
| 135 | await writeFirebaseCrashGroup( |
| 136 | env, meta, { eventId: "e".repeat(32), receivedAt: meta.firstSeen }, 0, true, 1, 1, undefined, fetcher, |
| 137 | ); |
| 138 | expect(tokenRequests).toBe(2); |
| 139 | |
| 140 | resetFirebaseAuthForTests(); |
| 141 | const secret = "private-key-material-must-not-leak"; |
| 142 | const failing: typeof fetch = async () => new Response(secret, { status: 403 }); |
| 143 | await expect(writeFirebaseCrashGroup( |
| 144 | env, meta, { eventId: "f".repeat(32), receivedAt: meta.firstSeen }, 0, true, 1, 1, undefined, failing, |
| 145 | )).rejects.not.toThrow(secret); |
| 146 | }); |
| 147 | |
| 148 | it("bounds OAuth and rejects non-Firebase hosts before sample transmission", async () => { |
| 149 | vi.useFakeTimers(); |
| 150 | const env = await firebaseEnv(); |
| 151 | let started!: () => void; |
| 152 | const requestStarted = new Promise<void>((resolve) => { started = resolve; }); |
| 153 | const hanging: typeof fetch = async (_input, init) => { |
| 154 | started(); |
| 155 | return new Promise<Response>((_resolve, reject) => { |
| 156 | init?.signal?.addEventListener("abort", () => reject(new DOMException("aborted", "AbortError"))); |
| 157 | }); |
| 158 | }; |
| 159 | const pending = writeFirebaseCrashGroup( |
| 160 | env, meta, { eventId: "1".repeat(32), receivedAt: meta.firstSeen }, 0, true, 1, 1, undefined, hanging, |
| 161 | ); |
| 162 | const rejection = expect(pending).rejects.toThrow("aborted"); |
| 163 | await requestStarted; |
| 164 | await vi.advanceTimersByTimeAsync(5_001); |
| 165 | await rejection; |
| 166 | vi.useRealTimers(); |
| 167 | |
| 168 | resetFirebaseAuthForTests(); |
| 169 | const invalid = { ...await firebaseEnv(), FIREBASE_DATABASE_URL: "https://example.com" } as Env; |
| 170 | let databaseCalls = 0; |
| 171 | const fetcher: typeof fetch = async (input) => { |
| 172 | if (String(input) === oauthURL) return Response.json({ access_token: "token", expires_in: 3600 }); |
| 173 | databaseCalls++; |
| 174 | return Response.json(null); |
| 175 | }; |
| 176 | await expect(writeFirebaseCrashGroup( |
| 177 | invalid, meta, { eventId: "2".repeat(32), receivedAt: meta.firstSeen }, 0, true, 1, 1, undefined, fetcher, |
| 178 | )).rejects.toThrow("approved Realtime Database host"); |
| 179 | expect(databaseCalls).toBe(0); |
| 180 | }); |
| 181 | |
| 182 | it("reads groups and conditionally replaces metadata while legacy delete remains available", async () => { |
| 183 | const env = await firebaseEnv(); |
| 184 | const root = `groups/${meta.fingerprint}`; |
| 185 | const sample = { eventId: "3".repeat(32), receivedAt: meta.firstSeen, groupCount: 1, writerGeneration: 1, sampleEpoch: 1 }; |
| 186 | const store = storeFetcher({ [root]: { meta, samples: { first: sample, latest: { 0: sample } } } }); |
| 187 | expect((await readFirebaseCrashGroup(env, meta.fingerprint, store.fetcher))?.samples?.first).toEqual(sample); |
| 188 | await writeFirebaseGroupMeta(env, meta.fingerprint, { ...meta, severity: "critical" }, 2, 1, "active", undefined, store.fetcher); |
| 189 | await deleteFirebaseCrashGroup(env, meta.fingerprint, store.fetcher); |
| 190 | expect(store.calls.map((call) => call.init?.method ?? "GET")).toEqual([ |
| 191 | "POST", "GET", "GET", "PUT", "DELETE", |
| 192 | ]); |
| 193 | }); |
| 194 | }); |
| 195 |