996 lines
35 KiB
TypeScript
996 lines
35 KiB
TypeScript
import { describe, expect, it } from "bun:test";
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import { scopedStorageKey } from "../src/lib/user-scope";
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import type { PrevisScene } from "../src/types/previs";
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import { createPrevisSaveCoordinator, type PrevisDraftEnvelope, type PrevisFlushRequest, type FlushFunction, type StorageLike } from "../src/lib/canvas/previs/previs-save";
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class MemoryStorage implements StorageLike {
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private readonly values = new Map<string, string>();
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throwOnGet = false;
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throwOnSet = false;
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throwOnRemove = false;
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getItem(key: string): string | null {
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if (this.throwOnGet) throw new Error("get failed");
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return this.values.get(key) ?? null;
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}
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setItem(key: string, value: string): void {
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if (this.throwOnSet) throw new Error("set failed");
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this.values.set(key, value);
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}
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removeItem(key: string): void {
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if (this.throwOnRemove) throw new Error("remove failed");
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this.values.delete(key);
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}
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keys(): string[] {
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return [...this.values.keys()];
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}
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}
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class ManualScheduler {
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private callbacks = new Map<number, () => void>();
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private id = 0;
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schedule(callback: () => void, delay: number): unknown {
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const handle = this.id++;
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this.callbacks.set(handle, callback);
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return handle;
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}
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cancel(handle: unknown): void {
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this.callbacks.delete(handle as number);
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}
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runAll(): void {
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for (const cb of this.callbacks.values()) {
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cb();
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}
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this.callbacks.clear();
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}
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size(): number {
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return this.callbacks.size;
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}
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}
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function deferred() {
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let res: (() => void) | null = null;
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let rej: ((err: unknown) => void) | null = null;
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const p = new Promise<void>((resolve, reject) => {
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res = resolve;
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rej = reject;
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});
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return {
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promise: p,
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resolve: () => res?.(),
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reject: (err: unknown) => rej?.(err),
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};
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}
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const makeScene = (overrides: Partial<PrevisScene> = {}): PrevisScene => ({
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id: "scene-1",
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version: 1,
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title: "Test Scene",
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background: "#000",
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environmentIntensity: 0.5,
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gridVisible: true,
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objects: [],
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cameras: [],
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lights: [],
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shots: [],
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activeShotId: "shot-1",
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createdAt: "2025-01-01T00:00:00Z",
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updatedAt: "2025-01-01T00:00:00Z",
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...overrides,
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});
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const makeEnvelope = (overrides: Partial<PrevisDraftEnvelope> = {}): PrevisDraftEnvelope => {
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const scene = overrides.scene ?? makeScene();
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return {
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schemaVersion: 1,
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sceneId: scene.id,
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baseUpdatedAt: scene.updatedAt,
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revision: 1,
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savedAt: 1000,
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...overrides,
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scene,
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};
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};
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/** Serializes a complete valid envelope after breaking only the target fields. */
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const corruptEnvelope = (corrupt: (envelope: Record<string, unknown>) => void, overrides: Partial<PrevisDraftEnvelope> = {}): string => {
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const envelope: Record<string, unknown> = {
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...makeEnvelope(overrides),
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};
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corrupt(envelope);
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return JSON.stringify(envelope);
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};
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/**
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* Serializes a complete valid envelope, splicing raw JSON number tokens that
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* JSON.stringify cannot express (for example 1e999 parsing back as Infinity).
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*/
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const rawEnvelopeWith = (rawFields: Record<string, string>): string => {
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const envelope: Record<string, unknown> = { ...makeEnvelope() };
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const entries = Object.entries(envelope)
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.filter(([field]) => !(field in rawFields))
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.map(([field, value]) => JSON.stringify(field) + ":" + JSON.stringify(value));
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const rawEntries = Object.entries(rawFields).map(([field, token]) => JSON.stringify(field) + ":" + token);
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return "{" + [...entries, ...rawEntries].join(",") + "}";
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};
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type HarnessOptions = {
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scope?: string;
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storage?: MemoryStorage;
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initialScene?: PrevisScene;
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};
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const createHarness = (options: HarnessOptions = {}) => {
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const scope = options.scope ?? "user-a";
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const storage = options.storage ?? new MemoryStorage();
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const initialScene = options.initialScene ?? makeScene();
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const scheduler = new ManualScheduler();
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let now = 1000;
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const requests: PrevisFlushRequest[] = [];
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let flushBehavior: FlushFunction = async () => undefined;
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const flushFn: FlushFunction = async (request) => {
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requests.push(structuredClone(request));
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await flushBehavior(request);
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};
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const coord = createPrevisSaveCoordinator({
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initialScene,
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scope,
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storage,
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flush: flushFn,
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now: () => now++,
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debounceMs: 25,
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schedule: (callback) => scheduler.schedule(callback, 0),
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cancelSchedule: (handle) => scheduler.cancel(handle),
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});
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const key = scopedStorageKey("previs-scene-draft:" + initialScene.id, scope);
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const editedScene = (overrides: Partial<PrevisScene> = {}) => {
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const scene = makeScene(overrides);
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coord.edit(scene);
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return scene;
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};
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const readEnvelope = (id: string = initialScene.id): PrevisDraftEnvelope | null => {
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const readKey = id === initialScene.id ? key : scopedStorageKey("previs-scene-draft:" + id, scope);
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const raw = storage.getItem(readKey);
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return raw === null ? null : (JSON.parse(raw) as PrevisDraftEnvelope);
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};
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const writeRaw = (raw: string): void => {
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storage.setItem(key, raw);
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};
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const setFlushBehavior = (next: FlushFunction): void => {
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flushBehavior = next;
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};
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const flushMicrotasks = async (): Promise<void> => {
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scheduler.runAll();
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await Promise.resolve();
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await Promise.resolve();
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};
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const dispose = (): void => {
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coord.dispose();
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scheduler.runAll();
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};
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return {
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storage,
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scheduler,
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now: () => now,
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requests,
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coord,
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scope,
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key,
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editedScene,
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readEnvelope,
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writeRaw,
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setFlushBehavior,
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flushMicrotasks,
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dispose,
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};
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};
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describe("PrevisSaveCoordinator", () => {
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describe("01 initial", () => {
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it("should be saved with revision 0, no draft, no recovery", () => {
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const h = createHarness();
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const snap = h.coord.getSnapshot();
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expect(snap.status).toBe("saved");
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expect(snap.revision).toBe(0);
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expect(snap.confirmedRevision).toBe(0);
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expect(snap.draftStored).toBe(false);
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expect(h.readEnvelope("scene-1")).toBeNull();
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});
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});
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describe("02 edit", () => {
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it("should write to fixed scoped key with complete envelope", () => {
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const h = createHarness();
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const s = h.editedScene({ title: "Edited" });
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expect(s).toBeDefined();
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const env = h.readEnvelope("scene-1");
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expect(env).toMatchObject({
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schemaVersion: 1,
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sceneId: "scene-1",
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scene: expect.objectContaining({ title: "Edited" }),
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});
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expect(env.revision).toBe(1);
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expect(env.savedAt).toBeDefined();
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});
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});
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describe("03 continuous edit", () => {
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it("should monotonically increase revision and reflect latest scene", () => {
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const h = createHarness();
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h.editedScene({ title: "v1" });
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h.editedScene({ title: "v2" });
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const snap = h.coord.getSnapshot();
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expect(snap.revision).toBe(2);
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expect(snap.status).toBe("dirty");
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});
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});
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describe("04 invalid scene id", () => {
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it("should reject edit with wrong scene id and leave status unchanged", () => {
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const h = createHarness();
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const originalStatus = h.coord.getSnapshot().status;
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const result = h.coord.edit(makeScene({ id: "wrong" }));
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expect(result).toBe(false);
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expect(h.coord.getSnapshot().status).toBe(originalStatus);
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});
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});
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describe("05 storage set fail", () => {
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it("should keep memory edit, set error status, draftStored false", () => {
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const h = createHarness();
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h.storage.throwOnSet = true;
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const scene = makeScene({ title: "memory-only" });
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expect(h.coord.edit(scene)).toBe(true);
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const snap = h.coord.getSnapshot();
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expect(snap.scene.title).toBe("memory-only");
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expect(snap.status).toBe("error");
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expect(snap.draftStored).toBe(false);
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});
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});
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describe("06 debounce", () => {
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it("should debounce multiple edits and flush only the latest scene", async () => {
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const h = createHarness();
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h.editedScene({ title: "a" });
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h.editedScene({ title: "b" });
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expect(h.scheduler.size()).toBe(1);
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await h.flushMicrotasks();
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expect(h.requests).toHaveLength(1);
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expect(h.requests[0]?.scene.title).toBe("b");
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});
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});
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describe("07 concurrent flush", () => {
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it("should return the same Promise for concurrent flushLatest calls", async () => {
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const h = createHarness();
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h.editedScene({ title: "dirty" });
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const first = h.coord.flushLatest();
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const second = h.coord.flushLatest();
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expect(first).toBe(second);
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expect(await first).toBe(true);
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});
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});
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describe("08 concurrent edit during flush", () => {
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it("should send second request in drain and update remaining draft base", async () => {
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const h = createHarness();
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const first = deferred();
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const second = deferred();
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let flushCall = 0;
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h.setFlushBehavior(async () => {
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const gate = flushCall++ === 0 ? first : second;
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await gate.promise;
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});
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const firstScene = h.editedScene({
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title: "first",
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updatedAt: "2026-01-01T00:00:01.000Z",
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});
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const pending = h.coord.flushLatest();
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expect(h.requests).toHaveLength(1);
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expect(h.requests[0]?.scene.title).toBe("first");
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h.editedScene({
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title: "second",
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updatedAt: "2026-01-01T00:00:02.000Z",
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});
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first.resolve();
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await h.flushMicrotasks();
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expect(h.requests).toHaveLength(2);
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expect(h.requests[1]?.scene.title).toBe("second");
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expect(h.coord.getSnapshot().status).not.toBe("saved");
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expect(h.readEnvelope()?.baseUpdatedAt).toBe(firstScene.updatedAt);
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second.resolve();
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expect(await pending).toBe(true);
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expect(h.coord.getSnapshot()).toMatchObject({
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revision: 2,
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confirmedRevision: 2,
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status: "saved",
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});
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expect(h.readEnvelope()).toBeNull();
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});
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});
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describe("09 remote fail", () => {
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it("should keep safe draft and set error status", async () => {
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const h = createHarness();
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h.editedScene({ title: "remote-fail" });
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h.setFlushBehavior(async () => {
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throw new Error("remote failed");
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});
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expect(await h.coord.flushLatest()).toBe(false);
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expect(h.requests).toHaveLength(1);
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expect(h.coord.getSnapshot()).toMatchObject({
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status: "error",
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draftStored: true,
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confirmedRevision: 0,
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});
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expect(h.readEnvelope()?.scene.title).toBe("remote-fail");
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});
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});
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describe("10 retry", () => {
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it("should re-call remote and clear draft on success", async () => {
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const h = createHarness();
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await h.coord.flushLatest();
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const result = await h.coord.retry();
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expect(result).toBe(true);
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expect(h.readEnvelope("scene-1")).toBeNull();
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});
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});
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describe("11 successful flush clears only matching draft", () => {
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it("should clear only draft with confirmed revision", async () => {
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const h = createHarness();
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h.editedScene();
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await h.coord.flushLatest();
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expect(h.readEnvelope("scene-1")).toBeNull();
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});
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});
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describe("12 remove fail keeps saved status", () => {
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it("should stay saved but keep the draft when removeItem fails", async () => {
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const h = createHarness();
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h.editedScene({ title: "remove-fail" });
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expect(h.coord.getSnapshot().draftStored).toBe(true);
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expect(h.readEnvelope()?.revision).toBe(1);
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h.storage.throwOnRemove = true;
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expect(await h.coord.flushLatest()).toBe(true);
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expect(h.coord.getSnapshot()).toMatchObject({
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status: "saved",
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confirmedRevision: 1,
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draftStored: true,
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});
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h.storage.throwOnRemove = false;
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expect(h.readEnvelope()?.revision).toBe(1);
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});
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});
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describe("13 malformed JSON", () => {
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it("should reject unparsable JSON stored under the scoped key", () => {
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const h = createHarness();
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h.writeRaw("invalid json");
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expect(h.coord.restoreCandidate()).toBeNull();
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});
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});
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describe("14 wrong schema", () => {
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it("should reject a candidate whose schemaVersion is not 1", () => {
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const h = createHarness();
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h.writeRaw(JSON.stringify(makeEnvelope()));
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expect(h.coord.restoreCandidate()).not.toBeNull();
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h.writeRaw(
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corruptEnvelope((envelope) => {
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envelope.schemaVersion = 2;
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}),
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);
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expect(h.coord.restoreCandidate()).toBeNull();
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});
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});
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describe("15 wrong sceneId", () => {
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it("should reject a candidate whose sceneId does not match the scene", () => {
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const h = createHarness();
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h.writeRaw(JSON.stringify(makeEnvelope()));
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expect(h.coord.restoreCandidate()).not.toBeNull();
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h.writeRaw(
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corruptEnvelope((envelope) => {
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envelope.sceneId = "scene-other";
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}),
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);
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expect(h.coord.restoreCandidate()).toBeNull();
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});
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});
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describe("16 missing baseUpdatedAt", () => {
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it("should reject a candidate whose baseUpdatedAt is missing or not a string", () => {
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const h = createHarness();
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h.writeRaw(JSON.stringify(makeEnvelope()));
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expect(h.coord.restoreCandidate()).not.toBeNull();
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h.writeRaw(
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corruptEnvelope((envelope) => {
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delete envelope.baseUpdatedAt;
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}),
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);
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expect(h.coord.restoreCandidate()).toBeNull();
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h.writeRaw(
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corruptEnvelope((envelope) => {
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envelope.baseUpdatedAt = 20250101;
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}),
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);
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expect(h.coord.restoreCandidate()).toBeNull();
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});
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});
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describe("17 invalid scene shape", () => {
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it("should reject a candidate whose scene fails PrevisScene validation", () => {
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const h = createHarness();
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h.writeRaw(JSON.stringify(makeEnvelope()));
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expect(h.coord.restoreCandidate()).not.toBeNull();
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h.writeRaw(
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corruptEnvelope((envelope) => {
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envelope.scene = { ...makeScene(), gridVisible: "yes" };
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}),
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);
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expect(h.coord.restoreCandidate()).toBeNull();
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h.writeRaw(
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corruptEnvelope((envelope) => {
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envelope.scene = { ...makeScene(), shots: "none" };
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}),
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);
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expect(h.coord.restoreCandidate()).toBeNull();
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h.writeRaw(
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corruptEnvelope((envelope) => {
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envelope.scene = makeScene({ id: "scene-2" });
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}),
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);
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expect(h.coord.restoreCandidate()).toBeNull();
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});
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});
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describe("18 invalid revision/savedAt", () => {
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it("should reject negative, fractional, unsafe revision and non-finite savedAt", () => {
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const h = createHarness();
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h.writeRaw(JSON.stringify(makeEnvelope()));
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expect(h.coord.restoreCandidate()).not.toBeNull();
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h.writeRaw(
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corruptEnvelope((envelope) => {
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envelope.revision = -1;
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}),
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);
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expect(h.coord.restoreCandidate()).toBeNull();
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h.writeRaw(
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corruptEnvelope((envelope) => {
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envelope.revision = 1.5;
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}),
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);
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expect(h.coord.restoreCandidate()).toBeNull();
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h.writeRaw(
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corruptEnvelope((envelope) => {
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envelope.revision = Number.MAX_SAFE_INTEGER + 1;
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}),
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);
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expect(h.coord.restoreCandidate()).toBeNull();
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h.writeRaw(rawEnvelopeWith({ savedAt: "1e999" }));
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expect(h.coord.restoreCandidate()).toBeNull();
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});
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});
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describe("19 scope isolation", () => {
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it("should only read the draft written under its own user scope", () => {
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const storage = new MemoryStorage();
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const userA = createHarness({ scope: "user-a", storage });
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const userB = createHarness({ scope: "user-b", storage });
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expect(userA.key).not.toBe(userB.key);
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userB.writeRaw(
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JSON.stringify(
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makeEnvelope({
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revision: 3,
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scene: makeScene({ title: "user-b draft" }),
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}),
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),
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);
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expect(storage.keys()).toEqual([userB.key]);
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expect(userA.coord.restoreCandidate()).toBeNull();
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const candidate = userB.coord.restoreCandidate();
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expect(candidate).not.toBeNull();
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expect(candidate?.revision).toBe(3);
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expect(candidate?.scene.title).toBe("user-b draft");
|
|
});
|
|
});
|
|
|
|
describe("20 explicitRestore success", () => {
|
|
it("should succeed and set dirty status", () => {
|
|
const h = createHarness();
|
|
const env = {
|
|
schemaVersion: 1,
|
|
sceneId: "scene-1",
|
|
baseUpdatedAt: "2025",
|
|
scene: makeScene(),
|
|
revision: 5,
|
|
savedAt: 100,
|
|
};
|
|
const result = h.coord.explicitRestore(env);
|
|
expect(result).toBe(true);
|
|
expect(h.coord.getSnapshot().status).toBe("dirty");
|
|
expect(h.coord.getSnapshot().revision).toBe(5);
|
|
});
|
|
});
|
|
|
|
describe("21 invalid explicitRestore", () => {
|
|
it("should reject older or invalid envelope", () => {
|
|
const h = createHarness();
|
|
h.editedScene();
|
|
const env = { ...h.readEnvelope("scene-1")!, revision: 0 };
|
|
const result = h.coord.explicitRestore(env);
|
|
expect(result).toBe(false);
|
|
});
|
|
});
|
|
|
|
describe("22 clean prepareClose", () => {
|
|
it("should immediately return close when confirmedRevision equals current", async () => {
|
|
const h = createHarness();
|
|
const result = await h.coord.prepareClose();
|
|
expect(result).toBe("close");
|
|
});
|
|
});
|
|
|
|
describe("23 dirty prepareClose", () => {
|
|
it("should reuse promise and return close on success", async () => {
|
|
const h = createHarness();
|
|
h.editedScene();
|
|
const p1 = h.coord.prepareClose();
|
|
const p2 = h.coord.prepareClose();
|
|
expect(p1).toBe(p2);
|
|
const result = await p1;
|
|
expect(result).toBe("close");
|
|
});
|
|
});
|
|
|
|
describe("24 prepareClose fail with draft", () => {
|
|
it("should return offer-draft-exit when remote fails but the draft is safe", async () => {
|
|
const h = createHarness();
|
|
h.editedScene({ title: "close-fail" });
|
|
expect(h.coord.getSnapshot().draftStored).toBe(true);
|
|
expect(h.readEnvelope()?.scene.title).toBe("close-fail");
|
|
|
|
h.setFlushBehavior(async () => {
|
|
throw new Error("remote rejected");
|
|
});
|
|
|
|
expect(await h.coord.prepareClose()).toBe("offer-draft-exit");
|
|
expect(h.coord.getSnapshot().status).toBe("error");
|
|
expect(h.readEnvelope()?.scene.title).toBe("close-fail");
|
|
});
|
|
});
|
|
|
|
describe("25 prepareClose full fail", () => {
|
|
it("should return stay when both the local draft and the remote flush fail", async () => {
|
|
const h = createHarness();
|
|
h.storage.throwOnSet = true;
|
|
h.setFlushBehavior(async () => {
|
|
throw new Error("remote rejected");
|
|
});
|
|
|
|
h.editedScene({ title: "no-draft" });
|
|
expect(h.coord.getSnapshot().draftStored).toBe(false);
|
|
|
|
expect(await h.coord.prepareClose()).toBe("stay");
|
|
expect(h.coord.getSnapshot().status).toBe("error");
|
|
expect(h.readEnvelope()).toBeNull();
|
|
});
|
|
});
|
|
|
|
describe("26 handlePageHide", () => {
|
|
it("should reuse one in-flight promise and flush the latest revision", async () => {
|
|
const h = createHarness();
|
|
const gate = deferred();
|
|
h.setFlushBehavior(async () => {
|
|
await gate.promise;
|
|
});
|
|
|
|
h.editedScene({ title: "hide-1" });
|
|
h.editedScene({ title: "hide-2" });
|
|
expect(h.coord.getSnapshot().revision).toBe(2);
|
|
|
|
const p1 = h.coord.handlePageHide();
|
|
const p2 = h.coord.handlePageHide();
|
|
expect(p1).toBe(p2);
|
|
|
|
expect(h.requests).toHaveLength(1);
|
|
expect(h.requests[0]?.revision).toBe(2);
|
|
expect(h.requests[0]?.scene.title).toBe("hide-2");
|
|
|
|
gate.resolve();
|
|
expect(await p1).toBe(true);
|
|
expect(h.coord.getSnapshot()).toMatchObject({
|
|
status: "saved",
|
|
confirmedRevision: 2,
|
|
});
|
|
});
|
|
});
|
|
|
|
describe("27 dispose", () => {
|
|
it("should cancel debounce, stop notifying, and reject later edits", () => {
|
|
const h = createHarness();
|
|
const seen: string[] = [];
|
|
h.coord.onStatusChange((status) => {
|
|
seen.push(status);
|
|
});
|
|
|
|
expect(h.coord.edit(makeScene({ title: "before-dispose" }))).toBe(true);
|
|
expect(seen).toEqual(["dirty"]);
|
|
expect(h.scheduler.size()).toBe(1);
|
|
|
|
h.coord.dispose();
|
|
expect(h.scheduler.size()).toBe(0);
|
|
|
|
expect(h.coord.edit(makeScene({ title: "after-dispose" }))).toBe(false);
|
|
expect(seen).toEqual(["dirty"]);
|
|
});
|
|
});
|
|
|
|
describe("28 dispose in-flight", () => {
|
|
it("should not mark saved or confirmed when disposed mid-flight", async () => {
|
|
const h = createHarness();
|
|
const gate = deferred();
|
|
h.setFlushBehavior(async () => {
|
|
await gate.promise;
|
|
});
|
|
|
|
h.editedScene({ title: "in-flight" });
|
|
const pending = h.coord.flushLatest();
|
|
expect(h.requests).toHaveLength(1);
|
|
expect(h.requests[0]?.revision).toBe(1);
|
|
|
|
h.coord.dispose();
|
|
gate.resolve();
|
|
|
|
expect(await pending).toBe(false);
|
|
const snap = h.coord.getSnapshot();
|
|
expect(snap.confirmedRevision).toBe(0);
|
|
expect(snap.status).not.toBe("saved");
|
|
});
|
|
});
|
|
|
|
describe("29 unsubscribe", () => {
|
|
it("should only remove the unsubscribed listener", () => {
|
|
const h = createHarness();
|
|
const first: string[] = [];
|
|
const second: string[] = [];
|
|
|
|
const unsubscribeFirst = h.coord.onStatusChange((status) => {
|
|
first.push(status);
|
|
});
|
|
h.coord.onStatusChange((status) => {
|
|
second.push(status);
|
|
});
|
|
|
|
unsubscribeFirst();
|
|
h.editedScene({ title: "notify-second" });
|
|
|
|
expect(first).toEqual([]);
|
|
expect(second).toEqual(["dirty"]);
|
|
});
|
|
});
|
|
|
|
describe("30 restoreCandidate on get fail", () => {
|
|
it("should return null when storage.getItem throws", () => {
|
|
const h = createHarness();
|
|
h.storage.throwOnGet = true;
|
|
expect(h.coord.restoreCandidate()).toBeNull();
|
|
});
|
|
});
|
|
|
|
describe("31 discardDraft", () => {
|
|
it("should really delete the scoped draft so the same candidate never returns", () => {
|
|
const h = createHarness();
|
|
h.editedScene({ title: "discard-me" });
|
|
expect(h.coord.restoreCandidate()?.scene.title).toBe("discard-me");
|
|
|
|
expect(h.coord.discardDraft()).toBe(true);
|
|
|
|
expect(h.readEnvelope()).toBeNull();
|
|
expect(h.storage.keys()).toEqual([]);
|
|
expect(h.coord.restoreCandidate()).toBeNull();
|
|
expect(h.coord.getSnapshot().draftStored).toBe(false);
|
|
});
|
|
|
|
it("should report false and keep the draft when removal fails", () => {
|
|
const h = createHarness();
|
|
h.editedScene({ title: "keep-me" });
|
|
|
|
h.storage.throwOnRemove = true;
|
|
expect(h.coord.discardDraft()).toBe(false);
|
|
|
|
h.storage.throwOnRemove = false;
|
|
expect(h.readEnvelope()?.scene.title).toBe("keep-me");
|
|
expect(h.coord.getSnapshot().draftStored).toBe(true);
|
|
});
|
|
|
|
it("should leave a later flush unaffected after discarding", async () => {
|
|
const h = createHarness();
|
|
h.editedScene({ title: "discard-then-save" });
|
|
expect(h.coord.discardDraft()).toBe(true);
|
|
|
|
expect(await h.coord.flushLatest()).toBe(true);
|
|
expect(h.requests).toHaveLength(1);
|
|
expect(h.requests[0]?.scene.title).toBe("discard-then-save");
|
|
expect(h.coord.getSnapshot()).toMatchObject({
|
|
status: "saved",
|
|
confirmedRevision: 1,
|
|
});
|
|
});
|
|
});
|
|
|
|
describe("32 restore then save", () => {
|
|
it("should adopt the restored revision and confirm it on the next flush", async () => {
|
|
const storage = new MemoryStorage();
|
|
const previousSession = createHarness({ storage });
|
|
previousSession.editedScene({
|
|
title: "recovered",
|
|
updatedAt: "2026-02-02T00:00:00.000Z",
|
|
});
|
|
previousSession.dispose();
|
|
|
|
const reopened = createHarness({ storage });
|
|
const candidate = reopened.coord.restoreCandidate();
|
|
expect(candidate?.scene.title).toBe("recovered");
|
|
expect(candidate).not.toBeNull();
|
|
if (!candidate) return;
|
|
|
|
expect(reopened.coord.explicitRestore(candidate)).toBe(true);
|
|
expect(reopened.coord.getSnapshot()).toMatchObject({
|
|
status: "dirty",
|
|
revision: candidate.revision,
|
|
confirmedRevision: 0,
|
|
draftStored: true,
|
|
});
|
|
|
|
expect(await reopened.coord.flushLatest()).toBe(true);
|
|
expect(reopened.requests).toHaveLength(1);
|
|
expect(reopened.requests[0]?.scene.title).toBe("recovered");
|
|
expect(reopened.requests[0]?.revision).toBe(candidate.revision);
|
|
expect(reopened.coord.getSnapshot()).toMatchObject({
|
|
status: "saved",
|
|
confirmedRevision: candidate.revision,
|
|
});
|
|
expect(reopened.readEnvelope()).toBeNull();
|
|
});
|
|
});
|
|
|
|
describe("33 status subscription and retry", () => {
|
|
it("should publish the full dirty/saving/error/saved sequence across a failed then retried save", async () => {
|
|
const h = createHarness();
|
|
const seen: string[] = [];
|
|
h.coord.onStatusChange((status) => {
|
|
seen.push(status);
|
|
});
|
|
|
|
let failNext = true;
|
|
h.setFlushBehavior(async () => {
|
|
if (failNext) throw new Error("remote rejected");
|
|
});
|
|
|
|
h.editedScene({ title: "retry-me" });
|
|
expect(seen).toEqual(["dirty"]);
|
|
|
|
expect(await h.coord.flushLatest()).toBe(false);
|
|
expect(seen).toEqual(["dirty", "saving", "error"]);
|
|
expect(h.coord.getSnapshot().draftStored).toBe(true);
|
|
|
|
failNext = false;
|
|
expect(await h.coord.retry()).toBe(true);
|
|
expect(seen).toEqual(["dirty", "saving", "error", "saving", "saved"]);
|
|
expect(h.requests).toHaveLength(2);
|
|
expect(h.requests[1]?.scene.title).toBe("retry-me");
|
|
expect(h.coord.getSnapshot()).toMatchObject({
|
|
status: "saved",
|
|
confirmedRevision: 1,
|
|
draftStored: false,
|
|
});
|
|
expect(h.readEnvelope()).toBeNull();
|
|
});
|
|
|
|
it("should stop publishing to a listener that unsubscribed mid-sequence", async () => {
|
|
const h = createHarness();
|
|
const seen: string[] = [];
|
|
const unsubscribe = h.coord.onStatusChange((status) => {
|
|
seen.push(status);
|
|
});
|
|
|
|
h.editedScene({ title: "unsub" });
|
|
expect(seen).toEqual(["dirty"]);
|
|
|
|
unsubscribe();
|
|
expect(await h.coord.flushLatest()).toBe(true);
|
|
expect(seen).toEqual(["dirty"]);
|
|
expect(h.coord.getSnapshot().status).toBe("saved");
|
|
});
|
|
});
|
|
|
|
describe("34 close decisions", () => {
|
|
it("should return close without any request when nothing is dirty", async () => {
|
|
const h = createHarness();
|
|
expect(await h.coord.prepareClose()).toBe("close");
|
|
expect(h.requests).toEqual([]);
|
|
});
|
|
|
|
it("should reuse one close promise while a slow save is in flight", async () => {
|
|
const h = createHarness();
|
|
const gate = deferred();
|
|
h.setFlushBehavior(async () => {
|
|
await gate.promise;
|
|
});
|
|
|
|
h.editedScene({ title: "slow-close" });
|
|
const first = h.coord.prepareClose();
|
|
const second = h.coord.prepareClose();
|
|
expect(first).toBe(second);
|
|
expect(h.requests).toHaveLength(1);
|
|
|
|
gate.resolve();
|
|
expect(await first).toBe("close");
|
|
expect(h.coord.getSnapshot().confirmedRevision).toBe(1);
|
|
});
|
|
|
|
it("should offer draft exit when the remote fails but the draft survives", async () => {
|
|
const h = createHarness();
|
|
h.editedScene({ title: "draft-exit" });
|
|
h.setFlushBehavior(async () => {
|
|
throw new Error("remote rejected");
|
|
});
|
|
|
|
expect(await h.coord.prepareClose()).toBe("offer-draft-exit");
|
|
expect(h.readEnvelope()?.scene.title).toBe("draft-exit");
|
|
|
|
// 放弃草稿后再次关闭仍要如实回报失败，不能因为草稿消失就假装可以安全退出。
|
|
expect(h.coord.discardDraft()).toBe(true);
|
|
expect(await h.coord.prepareClose()).toBe("stay");
|
|
});
|
|
|
|
it("should stay when neither the remote nor the local draft succeeded", async () => {
|
|
const h = createHarness();
|
|
h.storage.throwOnSet = true;
|
|
h.setFlushBehavior(async () => {
|
|
throw new Error("remote rejected");
|
|
});
|
|
|
|
h.editedScene({ title: "no-escape" });
|
|
expect(await h.coord.prepareClose()).toBe("stay");
|
|
expect(h.coord.getSnapshot().draftStored).toBe(false);
|
|
});
|
|
|
|
it("should stay after dispose instead of reporting a clean close", async () => {
|
|
const h = createHarness();
|
|
h.editedScene({ title: "disposed-close" });
|
|
h.coord.dispose();
|
|
expect(await h.coord.prepareClose()).toBe("stay");
|
|
});
|
|
});
|
|
|
|
describe("35 snapshot visible inside the status callback", () => {
|
|
it("should expose a fully confirmed, draft-free snapshot when saved fires", async () => {
|
|
const h = createHarness();
|
|
const observed: Array<{ status: string; revision: number; confirmedRevision: number; draftStored: boolean }> = [];
|
|
|
|
h.coord.onStatusChange((status) => {
|
|
// 订阅方只拿到 status 是不够的：必须能在回调内读到完整的新快照。
|
|
const snap = h.coord.getSnapshot();
|
|
observed.push({
|
|
status,
|
|
revision: snap.revision,
|
|
confirmedRevision: snap.confirmedRevision,
|
|
draftStored: snap.draftStored,
|
|
});
|
|
});
|
|
|
|
h.editedScene({ title: "observe-me" });
|
|
expect(await h.coord.flushLatest()).toBe(true);
|
|
|
|
expect(observed.map((entry) => entry.status)).toEqual(["dirty", "saving", "saved"]);
|
|
|
|
const saved = observed.at(-1);
|
|
expect(saved?.confirmedRevision).toBe(1);
|
|
expect(saved?.revision).toBe(1);
|
|
expect(saved?.confirmedRevision).toBe(saved?.revision);
|
|
expect(saved?.draftStored).toBe(false);
|
|
});
|
|
|
|
it("should expose the retained draft and unconfirmed revision when error fires", async () => {
|
|
const h = createHarness();
|
|
let seen: { confirmedRevision: number; revision: number; draftStored: boolean } | null = null;
|
|
|
|
h.setFlushBehavior(async () => {
|
|
throw new Error("remote rejected");
|
|
});
|
|
h.coord.onStatusChange((status) => {
|
|
if (status !== "error") return;
|
|
const snap = h.coord.getSnapshot();
|
|
seen = {
|
|
confirmedRevision: snap.confirmedRevision,
|
|
revision: snap.revision,
|
|
draftStored: snap.draftStored,
|
|
};
|
|
});
|
|
|
|
h.editedScene({ title: "error-observe" });
|
|
expect(await h.coord.flushLatest()).toBe(false);
|
|
|
|
expect(seen).not.toBeNull();
|
|
expect(seen?.revision).toBe(1);
|
|
expect(seen?.confirmedRevision).toBe(0);
|
|
expect(seen?.draftStored).toBe(true);
|
|
});
|
|
|
|
it("should reach a saved snapshot through the debounced schedule, not just explicit flush", async () => {
|
|
const h = createHarness();
|
|
let savedSnapshot: { confirmedRevision: number; revision: number; draftStored: boolean } | null = null;
|
|
|
|
h.coord.onStatusChange((status) => {
|
|
if (status !== "saved") return;
|
|
const snap = h.coord.getSnapshot();
|
|
savedSnapshot = {
|
|
confirmedRevision: snap.confirmedRevision,
|
|
revision: snap.revision,
|
|
draftStored: snap.draftStored,
|
|
};
|
|
});
|
|
|
|
h.editedScene({ title: "debounced" });
|
|
expect(h.scheduler.size()).toBe(1);
|
|
|
|
// 自动 debounce 保存完成后，订阅方看到的必须已经是确认态。
|
|
await h.flushMicrotasks();
|
|
|
|
expect(h.requests).toHaveLength(1);
|
|
expect(savedSnapshot).not.toBeNull();
|
|
expect(savedSnapshot?.confirmedRevision).toBe(1);
|
|
expect(savedSnapshot?.revision).toBe(1);
|
|
expect(savedSnapshot?.draftStored).toBe(false);
|
|
expect(h.readEnvelope()).toBeNull();
|
|
});
|
|
});
|
|
});
|