sync-runner.test.ts

1import { beforeEach, describe, expect, it, vi } from "vitest";2import type { PairedDevice, SyncMessage } from "../shared/sync-types";3import type {4  SyncSession,5  SyncEndpoint,6} from "../shared/sync-transport";7import type { SyncVaultAdapter } from "./sync-coordinator";8import type { SyncRunnerDeps } from "./sync-runner";910type StorageShape = Record<string, unknown>;1112function makeChromeMock(local: StorageShape, sync: StorageShape): typeof chrome {13  const area = (store: StorageShape) => ({14    get: vi.fn(async (key?: string | string[]) => {15      if (!key) return store;16      if (typeof key === "string") return { [key]: store[key] };17      return key.reduce<Record<string, unknown>>((acc, k) => { acc[k] = store[k]; return acc; }, {});18    }),19    set: vi.fn(async (next: Record<string, unknown>) => { Object.assign(store, next); }),20    remove: vi.fn(async (keys: string | string[]) => {21      const list = Array.isArray(keys) ? keys : [keys];22      for (const k of list) delete store[k];23    }),24  });25  return {26    storage: { local: area(local), sync: area(sync) },27    alarms: {28      clear: vi.fn(),29      create: vi.fn(),30      onAlarm: { addListener: vi.fn() },31    },32    idle: { setDetectionInterval: vi.fn(), onStateChanged: { addListener: vi.fn() } },33    runtime: { sendMessage: vi.fn(async () => undefined) },34  } as unknown as typeof chrome;35}3637const REMOTE_PUBKEY_HEX = "ab".repeat(32);3839function makeDevice(overrides: Partial<PairedDevice> = {}): PairedDevice {40  return {41    deviceId: "pixel-xyz",42    deviceName: "Pixel",43    deviceType: "android",44    longTermPublicKeyHex: REMOTE_PUBKEY_HEX,45    wsPort: 49142,46    pairedAt: 1700000000000,47    ...overrides,48  };49}5051interface FakePeer {52  send(msg: SyncMessage): Promise<void>;53  receive(): Promise<SyncMessage>;54}5556/**57 * In-memory SyncSession ↔ FakePeer pair. The session is what the58 * runner passes to runSyncInitiator; the peer is the other end of the59 * wire, controlled by the test body. Mirrors the pattern in60 * sync-coordinator.test.ts.61 */62function inMemoryPair(): { session: SyncSession; peer: FakePeer; closed: { v: boolean } } {63  const inboundToSession: Uint8Array[] = [];64  const outboundFromSession: Uint8Array[] = [];65  const sessionReaders: Array<(v: Uint8Array) => void> = [];66  const peerReaders: Array<(v: Uint8Array) => void> = [];67  const closed = { v: false };6869  const session: SyncSession = {70    send(bytes) {71      const r = peerReaders.shift();72      if (r) r(bytes); else outboundFromSession.push(bytes);73    },74    receive(): Promise<Uint8Array> {75      const v = inboundToSession.shift();76      if (v) return Promise.resolve(v);77      return new Promise<Uint8Array>((res) => sessionReaders.push(res));78    },79    async close() { closed.v = true; },80    remoteStaticPublicKey: new Uint8Array(32),81  };82  const peer: FakePeer = {83    async send(msg) {84      const bytes = new TextEncoder().encode(JSON.stringify(msg));85      const r = sessionReaders.shift();86      if (r) r(bytes); else inboundToSession.push(bytes);87    },88    async receive() {89      const v = outboundFromSession.shift();90      const bytes = v ?? await new Promise<Uint8Array>((res) => peerReaders.push(res));91      return JSON.parse(new TextDecoder().decode(bytes)) as SyncMessage;92    },93  };94  return { session, peer, closed };95}9697/**98 * Drive a happy-path SYNC_DONE handshake on the peer side, matching the99 * coordinator's HELLO → MANIFEST → REQUEST → ENTRIES → TOMBSTONES → DONE100 * sequence. `peerEntries` lets the peer send a SYNC_ENTRIES payload of any101 * size for the entriesReceived assertion; `wantFromUs` requests N entries102 * from our side (drives entriesSent).103 */104async function runPeer(105  peer: FakePeer,106  opts: {107    vaultId?: string;108    peerEntriesB64?: Record<string, string>;109    wantFromUsIds?: string[];110  } = {},111): Promise<void> {112  const hello = await peer.receive();113  if (hello.type !== "SYNC_HELLO") throw new Error("expected HELLO from initiator");114  await peer.send({115    type: "SYNC_HELLO",116    vaultId: opts.vaultId ?? hello.vaultId,117    deviceId: "peer-device",118    version: 0,119    deviceTime: Date.now(),120  });121  const manifest = await peer.receive();122  if (manifest.type !== "SYNC_MANIFEST") throw new Error("expected MANIFEST");123124  // Peer manifest declares the entries it will ship in SYNC_ENTRIES.125  const peerEntryManifest: Record<string, number> = {};126  for (const id of Object.keys(opts.peerEntriesB64 ?? {})) {127    peerEntryManifest[id] = Date.now();128  }129  await peer.send({130    type: "SYNC_MANIFEST",131    entries: peerEntryManifest,132    tombstones: {},133  });134135  const ourRequest = await peer.receive();136  if (ourRequest.type !== "SYNC_REQUEST") throw new Error("expected REQUEST from initiator");137138  // Peer asks for the ids it wants from us.139  await peer.send({ type: "SYNC_REQUEST", entryIds: opts.wantFromUsIds ?? [] });140141  const ourEntries = await peer.receive();142  if (ourEntries.type !== "SYNC_ENTRIES") throw new Error("expected ENTRIES from initiator");143144  // Only ship SYNC_ENTRIES when the initiator actually requested any. The145  // coordinator only awaits this frame when wantFromPeer.length > 0.146  if (Object.keys(peerEntryManifest).length > 0) {147    await peer.send({ type: "SYNC_ENTRIES", entries: opts.peerEntriesB64 ?? {} });148  }149150  const ourTombstones = await peer.receive();151  if (ourTombstones.type !== "SYNC_TOMBSTONES") throw new Error("expected TOMBSTONES");152  await peer.send({ type: "SYNC_TOMBSTONES", tombstones: {} });153154  const done = await peer.receive();155  if (done.type !== "SYNC_DONE") throw new Error("expected DONE");156  await peer.send({ type: "SYNC_DONE" });157}158159function emptyAdapter(): SyncVaultAdapter {160  return {161    async computeVaultId() { return "vault-abc"; },162    async getOurDeviceId() { return "device-init"; },163    // Non-zero so the equal-version short circuit doesn't fire in runner tests164    // that exercise the full manifest-diff flow.165    async getLocalVersion() { return 5; },166    async buildEntryManifest() { return {}; },167    async buildTombstoneManifest() { return {}; },168    async getEncryptedEntries() { return {}; },169    async applyEntries() { /* no-op */ },170    async applyTombstones() { /* no-op */ },171  };172}173174describe("productionSyncRunner", () => {175  let local: StorageShape;176  let sync: StorageShape;177178  beforeEach(() => {179    vi.resetModules();180    local = {};181    sync = {};182    (globalThis as { chrome?: typeof chrome }).chrome = makeChromeMock(local, sync);183    vi.stubGlobal("fetch", vi.fn(async () => { throw new Error("network disabled"); }));184  });185186  async function bootVault(): Promise<typeof import("./vault")> {187    const vault = await import("./vault");188    await vault.createVault("correct horse battery staple");189    return vault;190  }191192  it("returns VAULT_LOCKED result (does not throw) when the vault is locked", async () => {193    const vault = await bootVault();194    vault.lock();195    const { runWithDeps } = await import("./sync-runner");196    const deps: SyncRunnerDeps = {197      openSession: vi.fn(),198      probeSubnet: vi.fn(),199      getSubnet: vi.fn(async () => "192.168.1"),200      createAdapter: emptyAdapter,201    };202    const result = await runWithDeps(makeDevice(), deps);203    expect(result).toEqual({ ok: false, error: "VAULT_LOCKED" });204    expect(deps.openSession).not.toHaveBeenCalled();205  });206207  it("throws when the device has no longTermPublicKeyHex", async () => {208    await bootVault();209    const { runWithDeps } = await import("./sync-runner");210    const deps: SyncRunnerDeps = {211      openSession: vi.fn(),212      probeSubnet: vi.fn(),213      getSubnet: vi.fn(),214      createAdapter: emptyAdapter,215    };216    await expect(217      runWithDeps(makeDevice({ longTermPublicKeyHex: undefined }), deps),218    ).rejects.toThrow("paired_device_missing_pubkey");219  });220221  it("uses the cached last-known IP first and skips the subnet probe", async () => {222    await bootVault();223    const { setLastKnownIp } = await import("./paired-devices");224    await setLastKnownIp(REMOTE_PUBKEY_HEX, "192.168.1.42");225226    const { session, peer } = inMemoryPair();227    const openSession = vi.fn(async (_e: SyncEndpoint) => session);228    const probeSubnet = vi.fn();229    const deps: SyncRunnerDeps = {230      openSession,231      probeSubnet,232      getSubnet: vi.fn(async () => "192.168.1"),233      createAdapter: emptyAdapter,234    };235236    const { runWithDeps } = await import("./sync-runner");237    const runPromise = runWithDeps(makeDevice(), deps);238    await runPeer(peer);239    const result = await runPromise;240    expect(result).toEqual({ ok: true, entriesReceived: 0, entriesSent: 0 });241    expect(openSession).toHaveBeenCalledTimes(1);242    expect(openSession.mock.calls[0][0]).toEqual({ ip: "192.168.1.42", port: 49142 });243    expect(probeSubnet).not.toHaveBeenCalled();244  });245246  it("falls back to subnet probe when cached IP fails to connect", async () => {247    await bootVault();248    const { setLastKnownIp, getLastKnownIp } = await import("./paired-devices");249    await setLastKnownIp(REMOTE_PUBKEY_HEX, "192.168.1.13");250251    const { session, peer } = inMemoryPair();252    const openSession = vi.fn()253      .mockRejectedValueOnce(new Error("ECONNREFUSED"))254      .mockResolvedValueOnce(session);255    const probeSubnet = vi.fn(async () => ({ ip: "192.168.1.99", port: 49142 }));256    const deps: SyncRunnerDeps = {257      openSession,258      probeSubnet,259      getSubnet: vi.fn(async () => "192.168.1"),260      createAdapter: emptyAdapter,261    };262263    const { runWithDeps } = await import("./sync-runner");264    const runPromise = runWithDeps(makeDevice(), deps);265    await runPeer(peer);266    await runPromise;267    expect(openSession).toHaveBeenCalledTimes(2);268    expect(openSession.mock.calls[1][0]).toEqual({ ip: "192.168.1.99", port: 49142 });269    expect(probeSubnet).toHaveBeenCalledTimes(1);270    expect(await getLastKnownIp(REMOTE_PUBKEY_HEX)).toBe("192.168.1.99");271  });272273  it("throws host_unreachable when cached IP fails AND subnet probe returns null", async () => {274    await bootVault();275    const { setLastKnownIp } = await import("./paired-devices");276    await setLastKnownIp(REMOTE_PUBKEY_HEX, "192.168.1.13");277278    const deps: SyncRunnerDeps = {279      openSession: vi.fn().mockRejectedValue(new Error("ECONNREFUSED")),280      probeSubnet: vi.fn(async () => null),281      getSubnet: vi.fn(async () => "192.168.1"),282      createAdapter: emptyAdapter,283    };284    const { runWithDeps } = await import("./sync-runner");285    await expect(runWithDeps(makeDevice(), deps)).rejects.toThrow("host_unreachable");286  });287288  it("throws subnet_unknown when no cached IP and the local subnet can't be determined", async () => {289    await bootVault();290    const deps: SyncRunnerDeps = {291      openSession: vi.fn(),292      probeSubnet: vi.fn(),293      getSubnet: vi.fn(async () => null),294      createAdapter: emptyAdapter,295    };296    const { runWithDeps } = await import("./sync-runner");297    await expect(runWithDeps(makeDevice(), deps)).rejects.toThrow("subnet_unknown");298  });299300  it("surfaces entriesReceived from the peer's SYNC_ENTRIES payload", async () => {301    await bootVault();302    const { session, peer } = inMemoryPair();303    const openSession = vi.fn(async () => session);304    const deps: SyncRunnerDeps = {305      openSession,306      probeSubnet: vi.fn(async () => ({ ip: "192.168.1.1", port: 49142 })),307      getSubnet: vi.fn(async () => "192.168.1"),308      createAdapter: emptyAdapter,309    };310    const { runWithDeps } = await import("./sync-runner");311    const runPromise = runWithDeps(makeDevice(), deps);312    await runPeer(peer, {313      peerEntriesB64: { "id-1": "AAAA", "id-2": "BBBB", "id-3": "CCCC" },314    });315    const result = await runPromise;316    expect(result.ok).toBe(true);317    if (result.ok) {318      expect(result.entriesReceived).toBe(3);319      expect(result.entriesSent).toBe(0);320    }321  });322323  it("surfaces entriesSent from the adapter's encrypted-entry response", async () => {324    await bootVault();325    const { session, peer } = inMemoryPair();326    const adapter: SyncVaultAdapter = {327      ...emptyAdapter(),328      async getEncryptedEntries(ids) {329        const out: Record<string, string> = {};330        for (const id of ids) out[id] = "ENVELOPE_" + id;331        return out;332      },333    };334    const deps: SyncRunnerDeps = {335      openSession: vi.fn(async () => session),336      probeSubnet: vi.fn(async () => ({ ip: "192.168.1.1", port: 49142 })),337      getSubnet: vi.fn(async () => "192.168.1"),338      createAdapter: () => adapter,339    };340    const { runWithDeps } = await import("./sync-runner");341    const runPromise = runWithDeps(makeDevice(), deps);342    await runPeer(peer, { wantFromUsIds: ["a", "b"] });343    const result = await runPromise;344    expect(result.ok).toBe(true);345    if (result.ok) expect(result.entriesSent).toBe(2);346  });347348  it("translates a vault_id_mismatch coordinator outcome into an error throw", async () => {349    await bootVault();350    const { session, peer } = inMemoryPair();351    const deps: SyncRunnerDeps = {352      openSession: vi.fn(async () => session),353      probeSubnet: vi.fn(async () => ({ ip: "192.168.1.1", port: 49142 })),354      getSubnet: vi.fn(async () => "192.168.1"),355      createAdapter: emptyAdapter,356    };357    const { runWithDeps } = await import("./sync-runner");358    const runPromise = runWithDeps(makeDevice(), deps);359    // Peer responds with a vault_id that does NOT match ours, forcing the360    // coordinator to send SYNC_ERROR and return status:"vault_mismatch".361    (async () => {362      const hello = await peer.receive();363      if (hello.type === "SYNC_HELLO") {364        await peer.send({365          type: "SYNC_HELLO",366          vaultId: "wrong-vault-id",367          deviceId: "peer-device",368          version: 0,369          deviceTime: Date.now(),370        });371      }372    })().catch(() => undefined);373    await expect(runPromise).rejects.toThrow("vault_id_mismatch");374  });375});376377describe("sync-trigger persistence", () => {378  let local: StorageShape;379  let sync: StorageShape;380381  beforeEach(() => {382    vi.resetModules();383    local = {};384    sync = {};385    (globalThis as { chrome?: typeof chrome }).chrome = makeChromeMock(local, sync);386    vi.stubGlobal("fetch", vi.fn(async () => { throw new Error("network disabled"); }));387  });388389  it("persists lastSyncAt to chrome.storage.local on a successful sync", async () => {390    const trigger = await import("./sync-trigger");391    const paired = await import("./paired-devices");392    trigger._resetSyncTriggerForTest();393    await paired.upsertPairedDevice({394      deviceId: "P",395      deviceName: "Pixel",396      deviceType: "android",397      longTermPublicKeyHex: "a".repeat(64),398      trustSource: "direct",399      pairedAt: 1700000000000,400    });401    trigger.setSyncRunner(async () => ({ ok: true, entriesReceived: 1, entriesSent: 0 }));402    await trigger.triggerSyncIfReachable({ reason: "manual" });403    expect(typeof local.peach_last_sync_at).toBe("number");404    expect(local.peach_last_sync_at).toBeGreaterThan(0);405  });406407  it("hydratePersistedSyncState fills lastSyncAt from storage when in-memory state is empty", async () => {408    local.peach_last_sync_at = 1_700_005_000_000;409    const trigger = await import("./sync-trigger");410    trigger._resetSyncTriggerForTest();411    expect(trigger.getSyncState().lastSyncAt).toBeUndefined();412    await trigger.hydratePersistedSyncState();413    expect(trigger.getSyncState().lastSyncAt).toBe(1_700_005_000_000);414  });415});