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-rw-r--r--src/client/sync/queue.test.ts583
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+/**
+ * @vitest-environment jsdom
+ */
+import "fake-indexeddb/auto";
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+import { CardState, db, Rating } from "../db/index";
+import {
+ localCardRepository,
+ localDeckRepository,
+ localReviewLogRepository,
+} from "../db/repositories";
+import { SyncQueue, SyncStatus } from "./queue";
+
+describe("SyncQueue", () => {
+ let syncQueue: SyncQueue;
+
+ beforeEach(async () => {
+ await db.decks.clear();
+ await db.cards.clear();
+ await db.reviewLogs.clear();
+ localStorage.clear();
+ syncQueue = new SyncQueue();
+ });
+
+ afterEach(async () => {
+ await db.decks.clear();
+ await db.cards.clear();
+ await db.reviewLogs.clear();
+ localStorage.clear();
+ });
+
+ describe("initial state", () => {
+ it("should have idle status by default", async () => {
+ const state = await syncQueue.getState();
+ expect(state.status).toBe(SyncStatus.Idle);
+ });
+
+ it("should have zero pending count initially", async () => {
+ const state = await syncQueue.getState();
+ expect(state.pendingCount).toBe(0);
+ });
+
+ it("should have zero last sync version initially", () => {
+ expect(syncQueue.getLastSyncVersion()).toBe(0);
+ });
+
+ it("should have no last sync date initially", async () => {
+ const state = await syncQueue.getState();
+ expect(state.lastSyncAt).toBeNull();
+ });
+
+ it("should have no error initially", async () => {
+ const state = await syncQueue.getState();
+ expect(state.lastError).toBeNull();
+ });
+ });
+
+ describe("getPendingChanges", () => {
+ it("should return empty arrays when no pending changes", async () => {
+ const changes = await syncQueue.getPendingChanges();
+ expect(changes.decks).toHaveLength(0);
+ expect(changes.cards).toHaveLength(0);
+ expect(changes.reviewLogs).toHaveLength(0);
+ });
+
+ it("should return unsynced decks", async () => {
+ await localDeckRepository.create({
+ userId: "user-1",
+ name: "Test Deck",
+ description: null,
+ newCardsPerDay: 20,
+ });
+
+ const changes = await syncQueue.getPendingChanges();
+ expect(changes.decks).toHaveLength(1);
+ expect(changes.decks[0]?.name).toBe("Test Deck");
+ });
+
+ it("should return unsynced cards", async () => {
+ const deck = await localDeckRepository.create({
+ userId: "user-1",
+ name: "Test Deck",
+ description: null,
+ newCardsPerDay: 20,
+ });
+ await localCardRepository.create({
+ deckId: deck.id,
+ front: "Question",
+ back: "Answer",
+ });
+
+ const changes = await syncQueue.getPendingChanges();
+ expect(changes.cards).toHaveLength(1);
+ expect(changes.cards[0]?.front).toBe("Question");
+ });
+
+ it("should return unsynced review logs", async () => {
+ const deck = await localDeckRepository.create({
+ userId: "user-1",
+ name: "Test Deck",
+ description: null,
+ newCardsPerDay: 20,
+ });
+ const card = await localCardRepository.create({
+ deckId: deck.id,
+ front: "Question",
+ back: "Answer",
+ });
+ await localReviewLogRepository.create({
+ cardId: card.id,
+ userId: "user-1",
+ rating: Rating.Good,
+ state: CardState.New,
+ scheduledDays: 1,
+ elapsedDays: 0,
+ reviewedAt: new Date(),
+ durationMs: 5000,
+ });
+
+ const changes = await syncQueue.getPendingChanges();
+ expect(changes.reviewLogs).toHaveLength(1);
+ });
+
+ it("should not return synced items", async () => {
+ const deck = await localDeckRepository.create({
+ userId: "user-1",
+ name: "Test Deck",
+ description: null,
+ newCardsPerDay: 20,
+ });
+ await localDeckRepository.markSynced(deck.id, 1);
+
+ const changes = await syncQueue.getPendingChanges();
+ expect(changes.decks).toHaveLength(0);
+ });
+ });
+
+ describe("getPendingCount", () => {
+ it("should return total count of pending items", async () => {
+ const deck = await localDeckRepository.create({
+ userId: "user-1",
+ name: "Test Deck",
+ description: null,
+ newCardsPerDay: 20,
+ });
+ await localCardRepository.create({
+ deckId: deck.id,
+ front: "Q1",
+ back: "A1",
+ });
+ await localCardRepository.create({
+ deckId: deck.id,
+ front: "Q2",
+ back: "A2",
+ });
+
+ const count = await syncQueue.getPendingCount();
+ // 1 deck + 2 cards = 3
+ expect(count).toBe(3);
+ });
+ });
+
+ describe("hasPendingChanges", () => {
+ it("should return false when no pending changes", async () => {
+ const hasPending = await syncQueue.hasPendingChanges();
+ expect(hasPending).toBe(false);
+ });
+
+ it("should return true when there are pending changes", async () => {
+ await localDeckRepository.create({
+ userId: "user-1",
+ name: "Test Deck",
+ description: null,
+ newCardsPerDay: 20,
+ });
+
+ const hasPending = await syncQueue.hasPendingChanges();
+ expect(hasPending).toBe(true);
+ });
+ });
+
+ describe("startSync", () => {
+ it("should set status to syncing", async () => {
+ await syncQueue.startSync();
+
+ const state = await syncQueue.getState();
+ expect(state.status).toBe(SyncStatus.Syncing);
+ });
+
+ it("should clear previous error", async () => {
+ await syncQueue.failSync("Previous error");
+ await syncQueue.startSync();
+
+ const state = await syncQueue.getState();
+ expect(state.lastError).toBeNull();
+ });
+
+ it("should notify listeners", async () => {
+ const listener = vi.fn();
+ syncQueue.subscribe(listener);
+
+ await syncQueue.startSync();
+
+ expect(listener).toHaveBeenCalledWith(
+ expect.objectContaining({
+ status: SyncStatus.Syncing,
+ }),
+ );
+ });
+ });
+
+ describe("completeSync", () => {
+ it("should set status to idle", async () => {
+ await syncQueue.startSync();
+ await syncQueue.completeSync(10);
+
+ const state = await syncQueue.getState();
+ expect(state.status).toBe(SyncStatus.Idle);
+ });
+
+ it("should update last sync version", async () => {
+ await syncQueue.completeSync(10);
+
+ expect(syncQueue.getLastSyncVersion()).toBe(10);
+ });
+
+ it("should update last sync date", async () => {
+ const before = new Date();
+ await syncQueue.completeSync(10);
+
+ const state = await syncQueue.getState();
+ expect(state.lastSyncAt).not.toBeNull();
+ expect(state.lastSyncAt?.getTime()).toBeGreaterThanOrEqual(before.getTime());
+ });
+
+ it("should persist state to localStorage", async () => {
+ await syncQueue.completeSync(10);
+
+ const stored = JSON.parse(localStorage.getItem("kioku_sync_state") ?? "{}");
+ expect(stored.lastSyncVersion).toBe(10);
+ expect(stored.lastSyncAt).toBeDefined();
+ });
+
+ it("should notify listeners", async () => {
+ const listener = vi.fn();
+ syncQueue.subscribe(listener);
+
+ await syncQueue.completeSync(10);
+
+ expect(listener).toHaveBeenCalledWith(
+ expect.objectContaining({
+ status: SyncStatus.Idle,
+ lastSyncVersion: 10,
+ }),
+ );
+ });
+ });
+
+ describe("failSync", () => {
+ it("should set status to error", async () => {
+ await syncQueue.failSync("Network error");
+
+ const state = await syncQueue.getState();
+ expect(state.status).toBe(SyncStatus.Error);
+ });
+
+ it("should set error message", async () => {
+ await syncQueue.failSync("Network error");
+
+ const state = await syncQueue.getState();
+ expect(state.lastError).toBe("Network error");
+ });
+
+ it("should notify listeners", async () => {
+ const listener = vi.fn();
+ syncQueue.subscribe(listener);
+
+ await syncQueue.failSync("Network error");
+
+ expect(listener).toHaveBeenCalledWith(
+ expect.objectContaining({
+ status: SyncStatus.Error,
+ lastError: "Network error",
+ }),
+ );
+ });
+ });
+
+ describe("markSynced", () => {
+ it("should mark decks as synced", async () => {
+ const deck = await localDeckRepository.create({
+ userId: "user-1",
+ name: "Test Deck",
+ description: null,
+ newCardsPerDay: 20,
+ });
+
+ await syncQueue.markSynced({
+ decks: [{ id: deck.id, syncVersion: 5 }],
+ cards: [],
+ reviewLogs: [],
+ });
+
+ const found = await localDeckRepository.findById(deck.id);
+ expect(found?._synced).toBe(true);
+ expect(found?.syncVersion).toBe(5);
+ });
+
+ it("should mark cards as synced", async () => {
+ const deck = await localDeckRepository.create({
+ userId: "user-1",
+ name: "Test Deck",
+ description: null,
+ newCardsPerDay: 20,
+ });
+ const card = await localCardRepository.create({
+ deckId: deck.id,
+ front: "Q",
+ back: "A",
+ });
+
+ await syncQueue.markSynced({
+ decks: [],
+ cards: [{ id: card.id, syncVersion: 3 }],
+ reviewLogs: [],
+ });
+
+ const found = await localCardRepository.findById(card.id);
+ expect(found?._synced).toBe(true);
+ expect(found?.syncVersion).toBe(3);
+ });
+
+ it("should mark review logs as synced", async () => {
+ const deck = await localDeckRepository.create({
+ userId: "user-1",
+ name: "Test Deck",
+ description: null,
+ newCardsPerDay: 20,
+ });
+ const card = await localCardRepository.create({
+ deckId: deck.id,
+ front: "Q",
+ back: "A",
+ });
+ const reviewLog = await localReviewLogRepository.create({
+ cardId: card.id,
+ userId: "user-1",
+ rating: Rating.Good,
+ state: CardState.New,
+ scheduledDays: 1,
+ elapsedDays: 0,
+ reviewedAt: new Date(),
+ durationMs: 5000,
+ });
+
+ await syncQueue.markSynced({
+ decks: [],
+ cards: [],
+ reviewLogs: [{ id: reviewLog.id, syncVersion: 2 }],
+ });
+
+ const found = await localReviewLogRepository.findById(reviewLog.id);
+ expect(found?._synced).toBe(true);
+ expect(found?.syncVersion).toBe(2);
+ });
+
+ it("should notify listeners", async () => {
+ const listener = vi.fn();
+ syncQueue.subscribe(listener);
+
+ await syncQueue.markSynced({
+ decks: [],
+ cards: [],
+ reviewLogs: [],
+ });
+
+ expect(listener).toHaveBeenCalled();
+ });
+ });
+
+ describe("applyPulledChanges", () => {
+ it("should upsert decks from server", async () => {
+ const serverDeck = {
+ id: "server-deck-1",
+ userId: "user-1",
+ name: "Server Deck",
+ description: null,
+ newCardsPerDay: 15,
+ createdAt: new Date(),
+ updatedAt: new Date(),
+ deletedAt: null,
+ syncVersion: 5,
+ _synced: false,
+ };
+
+ await syncQueue.applyPulledChanges({
+ decks: [serverDeck],
+ cards: [],
+ reviewLogs: [],
+ });
+
+ const found = await localDeckRepository.findById("server-deck-1");
+ expect(found?.name).toBe("Server Deck");
+ expect(found?._synced).toBe(true);
+ });
+
+ it("should upsert cards from server", async () => {
+ const deck = await localDeckRepository.create({
+ userId: "user-1",
+ name: "Test Deck",
+ description: null,
+ newCardsPerDay: 20,
+ });
+ await localDeckRepository.markSynced(deck.id, 1);
+
+ const serverCard = {
+ id: "server-card-1",
+ deckId: deck.id,
+ front: "Server Question",
+ back: "Server Answer",
+ state: CardState.New,
+ due: new Date(),
+ stability: 0,
+ difficulty: 0,
+ elapsedDays: 0,
+ scheduledDays: 0,
+ reps: 0,
+ lapses: 0,
+ lastReview: null,
+ createdAt: new Date(),
+ updatedAt: new Date(),
+ deletedAt: null,
+ syncVersion: 3,
+ _synced: false,
+ } as const;
+
+ await syncQueue.applyPulledChanges({
+ decks: [],
+ cards: [serverCard],
+ reviewLogs: [],
+ });
+
+ const found = await localCardRepository.findById("server-card-1");
+ expect(found?.front).toBe("Server Question");
+ expect(found?._synced).toBe(true);
+ });
+
+ it("should upsert review logs from server", async () => {
+ const deck = await localDeckRepository.create({
+ userId: "user-1",
+ name: "Test Deck",
+ description: null,
+ newCardsPerDay: 20,
+ });
+ const card = await localCardRepository.create({
+ deckId: deck.id,
+ front: "Q",
+ back: "A",
+ });
+
+ const serverLog = {
+ id: "server-log-1",
+ cardId: card.id,
+ userId: "user-1",
+ rating: Rating.Good,
+ state: CardState.New,
+ scheduledDays: 1,
+ elapsedDays: 0,
+ reviewedAt: new Date(),
+ durationMs: 5000,
+ syncVersion: 2,
+ _synced: false,
+ } as const;
+
+ await syncQueue.applyPulledChanges({
+ decks: [],
+ cards: [],
+ reviewLogs: [serverLog],
+ });
+
+ const found = await localReviewLogRepository.findById("server-log-1");
+ expect(found?.rating).toBe(Rating.Good);
+ expect(found?._synced).toBe(true);
+ });
+
+ it("should notify listeners", async () => {
+ const listener = vi.fn();
+ syncQueue.subscribe(listener);
+
+ await syncQueue.applyPulledChanges({
+ decks: [],
+ cards: [],
+ reviewLogs: [],
+ });
+
+ expect(listener).toHaveBeenCalled();
+ });
+ });
+
+ describe("reset", () => {
+ it("should reset all state", async () => {
+ await syncQueue.completeSync(10);
+ await syncQueue.reset();
+
+ const state = await syncQueue.getState();
+ expect(state.status).toBe(SyncStatus.Idle);
+ expect(state.lastSyncVersion).toBe(0);
+ expect(state.lastSyncAt).toBeNull();
+ expect(state.lastError).toBeNull();
+ });
+
+ it("should clear localStorage", async () => {
+ await syncQueue.completeSync(10);
+ await syncQueue.reset();
+
+ expect(localStorage.getItem("kioku_sync_state")).toBeNull();
+ });
+
+ it("should notify listeners", async () => {
+ const listener = vi.fn();
+ syncQueue.subscribe(listener);
+
+ await syncQueue.reset();
+
+ expect(listener).toHaveBeenCalled();
+ });
+ });
+
+ describe("subscribe", () => {
+ it("should return unsubscribe function", async () => {
+ const listener = vi.fn();
+ const unsubscribe = syncQueue.subscribe(listener);
+
+ await syncQueue.startSync();
+ expect(listener).toHaveBeenCalledTimes(1);
+
+ unsubscribe();
+
+ await syncQueue.completeSync(10);
+ expect(listener).toHaveBeenCalledTimes(1);
+ });
+
+ it("should support multiple listeners", async () => {
+ const listener1 = vi.fn();
+ const listener2 = vi.fn();
+
+ syncQueue.subscribe(listener1);
+ syncQueue.subscribe(listener2);
+
+ await syncQueue.startSync();
+
+ expect(listener1).toHaveBeenCalled();
+ expect(listener2).toHaveBeenCalled();
+ });
+ });
+
+ describe("state persistence", () => {
+ it("should restore state from localStorage on construction", async () => {
+ // Simulate previous sync state
+ localStorage.setItem(
+ "kioku_sync_state",
+ JSON.stringify({
+ lastSyncVersion: 15,
+ lastSyncAt: "2024-01-15T10:00:00.000Z",
+ }),
+ );
+
+ const newQueue = new SyncQueue();
+
+ expect(newQueue.getLastSyncVersion()).toBe(15);
+ const state = await newQueue.getState();
+ expect(state.lastSyncAt).toEqual(new Date("2024-01-15T10:00:00.000Z"));
+ });
+
+ it("should handle invalid localStorage data", async () => {
+ localStorage.setItem("kioku_sync_state", "invalid json");
+
+ const newQueue = new SyncQueue();
+
+ expect(newQueue.getLastSyncVersion()).toBe(0);
+ });
+ });
+});
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