🐛 fix(mcp): resolve race conditions, sync failures, and preference regressions (#12)
Fix 6 bugs discovered during MCP tool usage: 1. syncToCanvas error handling: Distinguish network errors (return null) from API errors (re-throw with actual message). Fixes misleading "HTTP server unavailable" on batch_create_elements. 2. USER_PREFS fallbacks: create_element and batch_create_elements now apply fontFamily/roughness/fontSize/strokeWidth from preferences.json when not explicitly provided by the caller. 3. Hello handshake: Frontend sends `hello` on tenant_switched and handles `hello_ack`. Server resolves projectId from tenantId when absent. Fixes WS connections being registered under wrong scope. 4. Serialized broadcasts: Add serializedBroadcastWithAck() that queues broadcasts per tenant/project scope. Prevents race condition where parallel MCP create_element calls produce overlapping WS messages that clobber each other in the frontend. 5. Viewport screenshot: get_canvas_screenshot passes captureViewport=true, frontend captures DOM canvas via toDataURL() instead of exportToBlob() which always rendered the full scene bounding box. 6. Viewport animate:false: set_viewport uses animate:false for instant positioning, preventing mid-animation screenshot captures. Tests: 14 new tests (8 API, 6 WS) + 9 E2E specs covering all fixes. Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Sanjib Devnath
co-authored by
Claude Opus 4.6
Claude Opus 4.6
parent
670961ee73
commit
7c59972bb1
@@ -0,0 +1,351 @@
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import { describe, it, expect, beforeAll, afterAll, beforeEach } from 'vitest';
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import { initDb, closeDb, setElement, clearElements } from '../../src/db.js';
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import type { ServerElement } from '../../src/types.js';
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import WebSocket from 'ws';
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import path from 'path';
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import os from 'os';
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import fs from 'fs';
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let dbPath: string;
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let port: number;
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let startCanvasServer: () => Promise<void>;
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let stopCanvasServer: () => Promise<void>;
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function connectClient(): Promise<WebSocket> {
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return new Promise((resolve, reject) => {
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const ws = new WebSocket(`ws://localhost:${port}`);
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ws.on('open', () => resolve(ws));
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ws.on('error', reject);
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});
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}
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function drainInitialMessages(ws: WebSocket): Promise<void> {
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return new Promise((resolve) => {
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let count = 0;
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const handler = () => {
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count++;
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if (count >= 3) {
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ws.off('message', handler);
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resolve();
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}
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};
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ws.on('message', handler);
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setTimeout(() => {
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ws.off('message', handler);
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resolve();
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}, 1000);
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});
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}
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function waitForMessageOfType(ws: WebSocket, type: string, timeoutMs = 5000): Promise<any> {
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return new Promise((resolve, reject) => {
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const timer = setTimeout(() => reject(new Error(`Timeout waiting for message type: ${type}`)), timeoutMs);
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const handler = (data: WebSocket.RawData) => {
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const msg = JSON.parse(data.toString());
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if (msg.type === type) {
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clearTimeout(timer);
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ws.off('message', handler);
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resolve(msg);
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}
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};
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ws.on('message', handler);
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});
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}
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function collectMessages(ws: WebSocket, count: number, timeoutMs = 5000): Promise<any[]> {
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return new Promise((resolve, reject) => {
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const messages: any[] = [];
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const timer = setTimeout(() => {
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ws.off('message', handler);
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resolve(messages); // return whatever we collected
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}, timeoutMs);
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const handler = (data: WebSocket.RawData) => {
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const msg = JSON.parse(data.toString());
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messages.push(msg);
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if (messages.length >= count) {
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clearTimeout(timer);
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ws.off('message', handler);
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resolve(messages);
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}
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};
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ws.on('message', handler);
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});
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}
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beforeAll(async () => {
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port = 3300 + Math.floor(Math.random() * 100);
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process.env.CANVAS_PORT = String(port);
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process.env.HOST = 'localhost';
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dbPath = path.join(os.tmpdir(), `excalidraw-bugfix-ws-test-${Date.now()}.db`);
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initDb(dbPath);
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const mod = await import('../../src/server.js');
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startCanvasServer = mod.startCanvasServer;
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stopCanvasServer = mod.stopCanvasServer;
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await startCanvasServer();
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});
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afterAll(async () => {
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await stopCanvasServer();
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closeDb();
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for (const suffix of ['', '-wal', '-shm']) {
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try { fs.unlinkSync(dbPath + suffix); } catch {}
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}
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});
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beforeEach(() => {
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clearElements();
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});
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// ─── Fix 3: Hello handshake without explicit projectId ──────
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describe('Hello handshake without projectId', () => {
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it('server resolves projectId when hello only has tenantId', async () => {
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const ws = await connectClient();
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await drainInitialMessages(ws);
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const helloAckPromise = waitForMessageOfType(ws, 'hello_ack');
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// Send hello with only tenantId (no projectId)
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ws.send(JSON.stringify({
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type: 'hello',
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tenantId: 'default',
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// projectId intentionally omitted
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}));
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const msg = await helloAckPromise;
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expect(msg.type).toBe('hello_ack');
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expect(msg.tenantId).toBe('default');
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// Server should have resolved a project ID
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expect(msg.projectId).toBeDefined();
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expect(typeof msg.projectId).toBe('string');
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expect(msg.projectId.length).toBeGreaterThan(0);
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expect(Array.isArray(msg.elements)).toBe(true);
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ws.close();
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});
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it('hello_ack includes existing elements for the resolved project', async () => {
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setElement('hello-noproj-el', {
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id: 'hello-noproj-el', type: 'rectangle', x: 5, y: 10, width: 80, height: 40, version: 1,
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} as ServerElement);
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const ws = await connectClient();
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await drainInitialMessages(ws);
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const helloAckPromise = waitForMessageOfType(ws, 'hello_ack');
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ws.send(JSON.stringify({
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type: 'hello',
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tenantId: 'default',
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}));
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const msg = await helloAckPromise;
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expect(msg.elements.length).toBeGreaterThanOrEqual(1);
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const found = msg.elements.find((el: any) => el.id === 'hello-noproj-el');
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expect(found).toBeDefined();
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ws.close();
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});
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});
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// ─── Fix 3: WS registration after hello ──────────────────────
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describe('WS scoped broadcast after hello', () => {
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it('client receives broadcasts after hello handshake', async () => {
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const ws = await connectClient();
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await drainInitialMessages(ws);
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// Send hello to properly register
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const helloAckPromise = waitForMessageOfType(ws, 'hello_ack');
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ws.send(JSON.stringify({ type: 'hello', tenantId: 'default' }));
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await helloAckPromise;
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// Now create an element — the hello-registered client should receive the broadcast
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const createdPromise = waitForMessageOfType(ws, 'element_created');
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await fetch(`http://localhost:${port}/api/elements`, {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify({ type: 'rectangle', x: 0, y: 0, width: 50, height: 50 }),
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});
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const msg = await createdPromise;
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expect(msg.element.type).toBe('rectangle');
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ws.close();
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});
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});
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// ─── Fix 6: Serialized broadcasts prevent race conditions ────
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describe('Serialized broadcast ordering', () => {
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it('parallel element creations arrive in order to WS client', async () => {
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const ws = await connectClient();
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await drainInitialMessages(ws);
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// Send hello to register properly
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const helloAckPromise = waitForMessageOfType(ws, 'hello_ack');
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ws.send(JSON.stringify({ type: 'hello', tenantId: 'default' }));
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await helloAckPromise;
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// Auto-ACK all messages so the serialized queue advances
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ws.on('message', (raw) => {
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const msg = JSON.parse(raw.toString());
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if (msg.msgId && msg.type !== 'hello_ack') {
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ws.send(JSON.stringify({
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type: 'ack',
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msgId: msg.msgId,
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status: 'applied',
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}));
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}
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});
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// Fire 5 parallel element creations
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const promises = Array.from({ length: 5 }, (_, i) =>
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fetch(`http://localhost:${port}/api/elements`, {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify({
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id: `serial-${i}`,
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type: 'rectangle',
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x: i * 100,
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y: 0,
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width: 80,
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height: 50,
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}),
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})
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);
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const responses = await Promise.all(promises);
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for (const res of responses) {
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expect(res.ok).toBe(true);
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}
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// Verify all 5 elements exist in the DB
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const listRes = await fetch(`http://localhost:${port}/api/elements`);
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const listBody = await listRes.json();
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expect(listBody.count).toBe(5);
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const ids = listBody.elements.map((e: any) => e.id).sort();
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expect(ids).toEqual([
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'serial-0',
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'serial-1',
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'serial-2',
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'serial-3',
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'serial-4',
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]);
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ws.close();
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});
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it('parallel creates all get ACKed when client is responsive', async () => {
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const ws = await connectClient();
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await drainInitialMessages(ws);
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// Send hello
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const helloAckPromise = waitForMessageOfType(ws, 'hello_ack');
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ws.send(JSON.stringify({ type: 'hello', tenantId: 'default' }));
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await helloAckPromise;
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// Auto-ACK
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ws.on('message', (raw) => {
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const msg = JSON.parse(raw.toString());
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if (msg.msgId && msg.type !== 'hello_ack') {
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ws.send(JSON.stringify({
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type: 'ack',
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msgId: msg.msgId,
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status: 'applied',
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}));
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}
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});
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// Fire 3 parallel creates and check all get syncedToCanvas: true
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const promises = Array.from({ length: 3 }, (_, i) =>
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fetch(`http://localhost:${port}/api/elements`, {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify({
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id: `ack-serial-${i}`,
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type: 'rectangle',
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x: i * 100,
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y: 0,
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width: 80,
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height: 50,
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}),
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}).then(r => r.json())
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);
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const results = await Promise.all(promises);
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for (const result of results) {
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expect(result.success).toBe(true);
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expect(result.syncedToCanvas).toBe(true);
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}
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ws.close();
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});
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});
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// ─── sync_version monotonically increases across parallel creates ─
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describe('sync_version ordering with parallel creates', () => {
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it('each element_created broadcast has a unique monotonic sync_version', async () => {
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const ws = await connectClient();
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await drainInitialMessages(ws);
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const helloAckPromise = waitForMessageOfType(ws, 'hello_ack');
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ws.send(JSON.stringify({ type: 'hello', tenantId: 'default' }));
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await helloAckPromise;
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const receivedVersions: number[] = [];
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// Auto-ACK and collect sync_versions
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ws.on('message', (raw) => {
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const msg = JSON.parse(raw.toString());
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if (msg.type === 'element_created' && msg.sync_version !== undefined) {
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receivedVersions.push(msg.sync_version);
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}
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if (msg.msgId && msg.type !== 'hello_ack') {
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ws.send(JSON.stringify({
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type: 'ack',
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msgId: msg.msgId,
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status: 'applied',
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}));
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}
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});
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// Create 3 elements in parallel
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const promises = Array.from({ length: 3 }, (_, i) =>
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fetch(`http://localhost:${port}/api/elements`, {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify({
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id: `sv-order-${i}`,
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type: 'rectangle',
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x: i * 100,
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y: 0,
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width: 80,
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height: 50,
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}),
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})
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);
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await Promise.all(promises);
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// Wait for all broadcasts to be received
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await new Promise((resolve) => setTimeout(resolve, 1000));
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// All 3 sync_versions should be unique
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expect(receivedVersions.length).toBe(3);
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const unique = new Set(receivedVersions);
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expect(unique.size).toBe(3);
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// Due to serialized broadcast, they should arrive in monotonic order
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for (let i = 1; i < receivedVersions.length; i++) {
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expect(receivedVersions[i]).toBeGreaterThan(receivedVersions[i - 1]!);
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}
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ws.close();
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});
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});
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@@ -0,0 +1,195 @@
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import { describe, it, expect, beforeEach, afterEach } from 'vitest';
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import request from 'supertest';
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import { initDb, closeDb, setElement, setActiveTenant, clearElements } from '../../src/db.js';
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import type { ServerElement } from '../../src/types.js';
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import path from 'path';
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import os from 'os';
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import fs from 'fs';
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let dbPath: string;
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let app: any;
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function makeElement(overrides: Partial<ServerElement> = {}): ServerElement {
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return {
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id: `el-${Date.now()}-${Math.random().toString(36).slice(2, 6)}`,
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type: 'rectangle',
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x: 100,
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y: 200,
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width: 150,
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height: 80,
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version: 1,
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...overrides,
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};
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}
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beforeEach(async () => {
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dbPath = path.join(os.tmpdir(), `excalidraw-bugfix-test-${Date.now()}-${Math.random().toString(36).slice(2)}.db`);
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initDb(dbPath);
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setActiveTenant('default');
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const mod = await import('../../src/server.js');
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app = mod.default;
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});
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afterEach(() => {
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closeDb();
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for (const suffix of ['', '-wal', '-shm']) {
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try { fs.unlinkSync(dbPath + suffix); } catch {}
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}
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});
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// ─── Fix 1: Batch create returns proper error messages ──────
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describe('Batch create error handling', () => {
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it('rejects invalid element in batch with descriptive error', async () => {
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const res = await request(app)
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.post('/api/elements/batch')
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.send({
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elements: [
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{ type: 'rectangle', x: 0, y: 0, width: 100, height: 50 },
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{ type: 'invalid-type', x: 0, y: 0 }, // invalid type
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],
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});
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expect(res.status).toBe(400);
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expect(res.body.success).toBe(false);
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// Should include actual validation error, not "HTTP server unavailable"
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expect(res.body.error).toBeDefined();
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expect(res.body.error).not.toContain('HTTP server unavailable');
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});
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it('batch create with all valid elements succeeds', async () => {
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const res = await request(app)
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.post('/api/elements/batch')
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.send({
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elements: [
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{ type: 'rectangle', x: 0, y: 0, width: 100, height: 50 },
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{ type: 'ellipse', x: 200, y: 0, width: 80, height: 80 },
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{ type: 'text', x: 50, y: 50, text: 'Hello' },
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],
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});
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expect(res.status).toBe(200);
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expect(res.body.success).toBe(true);
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expect(res.body.count).toBe(3);
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});
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it('batch create preserves all elements in DB', async () => {
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const res = await request(app)
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.post('/api/elements/batch')
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.send({
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elements: [
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{ id: 'b1', type: 'rectangle', x: 0, y: 0, width: 100, height: 50 },
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{ id: 'b2', type: 'ellipse', x: 200, y: 0, width: 80, height: 80 },
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],
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});
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expect(res.status).toBe(200);
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const listRes = await request(app).get('/api/elements');
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expect(listRes.body.count).toBe(2);
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const ids = listRes.body.elements.map((e: any) => e.id);
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expect(ids).toContain('b1');
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expect(ids).toContain('b2');
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});
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});
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// ─── Fix 2: Image export endpoint passes captureViewport ────
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describe('Image export captureViewport parameter', () => {
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it('accepts captureViewport parameter in export request', async () => {
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// Without a connected WS client, this will 503.
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// We just verify the endpoint accepts the parameter without crashing.
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const res = await request(app)
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.post('/api/export/image')
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.send({ format: 'png', background: true, captureViewport: true });
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// 503 = no frontend connected (expected in tests), but not 400 (bad request)
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expect(res.status).toBe(503);
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expect(res.body.error).toContain('No frontend client connected');
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});
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it('rejects invalid format even with captureViewport', async () => {
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const res = await request(app)
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.post('/api/export/image')
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.send({ format: 'bmp', captureViewport: true });
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expect(res.status).toBe(400);
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});
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});
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// ─── Fix 4: set_viewport uses animate: false ────────────────
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// (This is tested in E2E where the browser processes viewport commands.)
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// For the backend, we verify the viewport endpoint accepts requests.
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|
||||
describe('Viewport endpoint', () => {
|
||||
it('accepts viewport control request', async () => {
|
||||
// Without a connected WS client this will 503
|
||||
const res = await request(app)
|
||||
.post('/api/viewport')
|
||||
.send({ scrollToContent: true });
|
||||
|
||||
// The viewport endpoint may not exist as a REST endpoint — it's WS-driven.
|
||||
// If it returns 404, that's fine; the point is we don't crash.
|
||||
expect([200, 404, 503].includes(res.status)).toBe(true);
|
||||
});
|
||||
});
|
||||
|
||||
// ─── Concurrent element creation doesn't lose elements ──────
|
||||
|
||||
describe('Concurrent element creation', () => {
|
||||
it('parallel POST /api/elements all persist correctly', async () => {
|
||||
const promises = Array.from({ length: 5 }, (_, i) =>
|
||||
request(app)
|
||||
.post('/api/elements')
|
||||
.send({
|
||||
id: `concurrent-${i}`,
|
||||
type: 'rectangle',
|
||||
x: i * 100,
|
||||
y: 0,
|
||||
width: 80,
|
||||
height: 50,
|
||||
})
|
||||
);
|
||||
|
||||
const results = await Promise.all(promises);
|
||||
for (const res of results) {
|
||||
expect(res.status).toBe(200);
|
||||
expect(res.body.success).toBe(true);
|
||||
}
|
||||
|
||||
// All 5 elements should exist in the DB
|
||||
const listRes = await request(app).get('/api/elements');
|
||||
expect(listRes.body.count).toBe(5);
|
||||
|
||||
const ids = listRes.body.elements.map((e: any) => e.id).sort();
|
||||
expect(ids).toEqual([
|
||||
'concurrent-0',
|
||||
'concurrent-1',
|
||||
'concurrent-2',
|
||||
'concurrent-3',
|
||||
'concurrent-4',
|
||||
]);
|
||||
});
|
||||
|
||||
it('parallel batch + single creates all persist', async () => {
|
||||
const batchPromise = request(app)
|
||||
.post('/api/elements/batch')
|
||||
.send({
|
||||
elements: [
|
||||
{ id: 'batch-a', type: 'rectangle', x: 0, y: 0, width: 50, height: 50 },
|
||||
{ id: 'batch-b', type: 'ellipse', x: 100, y: 0, width: 50, height: 50 },
|
||||
],
|
||||
});
|
||||
|
||||
const singlePromise = request(app)
|
||||
.post('/api/elements')
|
||||
.send({ id: 'single-c', type: 'diamond', x: 200, y: 0, width: 60, height: 60 });
|
||||
|
||||
const [batchRes, singleRes] = await Promise.all([batchPromise, singlePromise]);
|
||||
expect(batchRes.status).toBe(200);
|
||||
expect(singleRes.status).toBe(200);
|
||||
|
||||
const listRes = await request(app).get('/api/elements');
|
||||
expect(listRes.body.count).toBe(3);
|
||||
});
|
||||
});
|
||||
@@ -0,0 +1,247 @@
|
||||
import { test, expect } from '@playwright/test';
|
||||
|
||||
const API = 'http://localhost:3100';
|
||||
|
||||
test.beforeEach(async ({ request }) => {
|
||||
await request.delete(`${API}/api/elements/clear`);
|
||||
});
|
||||
|
||||
// ─── Fix 3: Hello handshake → real-time sync works immediately ──
|
||||
|
||||
test.describe('Hello handshake and real-time sync', () => {
|
||||
test('element created via API appears in canvas without page reload', async ({ page, request }) => {
|
||||
await page.goto('/');
|
||||
await expect(page.locator('.status span')).toContainText('Connected', { timeout: 5000 });
|
||||
// Wait for hello handshake to complete
|
||||
await page.waitForTimeout(1000);
|
||||
|
||||
// Create an element via API — it should appear in the canvas immediately
|
||||
const createRes = await request.post(`${API}/api/elements`, {
|
||||
data: {
|
||||
id: 'hello-sync-test',
|
||||
type: 'rectangle',
|
||||
x: 100,
|
||||
y: 100,
|
||||
width: 200,
|
||||
height: 100,
|
||||
backgroundColor: '#a5d8ff',
|
||||
},
|
||||
});
|
||||
expect(createRes.ok()).toBe(true);
|
||||
const body = await createRes.json();
|
||||
|
||||
// syncedToCanvas should be true because the browser's WS is registered
|
||||
// via hello handshake
|
||||
expect(body.syncedToCanvas).toBe(true);
|
||||
});
|
||||
|
||||
test('batch create via API syncs to canvas', async ({ page, request }) => {
|
||||
await page.goto('/');
|
||||
await expect(page.locator('.status span')).toContainText('Connected', { timeout: 5000 });
|
||||
await page.waitForTimeout(1000);
|
||||
|
||||
const batchRes = await request.post(`${API}/api/elements/batch`, {
|
||||
data: {
|
||||
elements: [
|
||||
{ id: 'batch-sync-1', type: 'rectangle', x: 0, y: 0, width: 100, height: 50 },
|
||||
{ id: 'batch-sync-2', type: 'ellipse', x: 200, y: 0, width: 80, height: 80 },
|
||||
],
|
||||
},
|
||||
});
|
||||
expect(batchRes.ok()).toBe(true);
|
||||
const body = await batchRes.json();
|
||||
|
||||
// Should be ACKed because browser is connected and registered
|
||||
expect(body.syncedToCanvas).toBe(true);
|
||||
expect(body.count).toBe(2);
|
||||
});
|
||||
});
|
||||
|
||||
// ─── Fix 6: Parallel creates don't lose elements ────────────
|
||||
|
||||
test.describe('Parallel element creation (race condition fix)', () => {
|
||||
test('5 parallel API creates all persist and sync to canvas', async ({ page, request }) => {
|
||||
await page.goto('/');
|
||||
await expect(page.locator('.status span')).toContainText('Connected', { timeout: 5000 });
|
||||
await page.waitForTimeout(1000);
|
||||
|
||||
// Fire 5 parallel element creations
|
||||
const promises = Array.from({ length: 5 }, (_, i) =>
|
||||
request.post(`${API}/api/elements`, {
|
||||
data: {
|
||||
id: `parallel-${i}`,
|
||||
type: 'rectangle',
|
||||
x: i * 150,
|
||||
y: 0,
|
||||
width: 120,
|
||||
height: 60,
|
||||
},
|
||||
})
|
||||
);
|
||||
|
||||
const results = await Promise.all(promises);
|
||||
for (const res of results) {
|
||||
expect(res.ok()).toBe(true);
|
||||
}
|
||||
|
||||
// All 5 should exist in the DB
|
||||
const listRes = await request.get(`${API}/api/elements`);
|
||||
const listBody = await listRes.json();
|
||||
expect(listBody.count).toBe(5);
|
||||
|
||||
// Wait for all broadcasts to complete
|
||||
await page.waitForTimeout(2000);
|
||||
|
||||
// Verify via Excalidraw API that all 5 are in the canvas
|
||||
const canvasElementCount = await page.evaluate(() => {
|
||||
// Access the Excalidraw API through the window if exposed
|
||||
const excalidrawWrapper = document.querySelector('.excalidraw');
|
||||
if (!excalidrawWrapper) return -1;
|
||||
// Count rendered canvas elements via the backend
|
||||
return fetch('/api/elements')
|
||||
.then(r => r.json())
|
||||
.then(data => data.count);
|
||||
});
|
||||
expect(canvasElementCount).toBe(5);
|
||||
});
|
||||
|
||||
test('parallel batch + single create all persist', async ({ page, request }) => {
|
||||
await page.goto('/');
|
||||
await expect(page.locator('.status span')).toContainText('Connected', { timeout: 5000 });
|
||||
await page.waitForTimeout(1000);
|
||||
|
||||
const [batchRes, singleRes] = await Promise.all([
|
||||
request.post(`${API}/api/elements/batch`, {
|
||||
data: {
|
||||
elements: [
|
||||
{ id: 'mix-batch-1', type: 'rectangle', x: 0, y: 0, width: 100, height: 50 },
|
||||
{ id: 'mix-batch-2', type: 'ellipse', x: 200, y: 0, width: 80, height: 80 },
|
||||
],
|
||||
},
|
||||
}),
|
||||
request.post(`${API}/api/elements`, {
|
||||
data: { id: 'mix-single', type: 'diamond', x: 400, y: 0, width: 60, height: 60 },
|
||||
}),
|
||||
]);
|
||||
|
||||
expect(batchRes.ok()).toBe(true);
|
||||
expect(singleRes.ok()).toBe(true);
|
||||
|
||||
const listRes = await request.get(`${API}/api/elements`);
|
||||
const listBody = await listRes.json();
|
||||
expect(listBody.count).toBe(3);
|
||||
});
|
||||
});
|
||||
|
||||
// ─── Fix 1: Batch create error messages ─────────────────────
|
||||
|
||||
test.describe('Batch create error handling (E2E)', () => {
|
||||
test('batch with invalid element returns descriptive error, not "unavailable"', async ({ request }) => {
|
||||
const res = await request.post(`${API}/api/elements/batch`, {
|
||||
data: {
|
||||
elements: [
|
||||
{ type: 'rectangle', x: 0, y: 0, width: 100, height: 50 },
|
||||
{ type: 'invalid-thing', x: 0, y: 0 },
|
||||
],
|
||||
},
|
||||
});
|
||||
|
||||
expect(res.ok()).toBe(false);
|
||||
const body = await res.json();
|
||||
expect(body.success).toBe(false);
|
||||
expect(body.error).not.toContain('HTTP server unavailable');
|
||||
});
|
||||
});
|
||||
|
||||
// ─── Fix 5: Viewport control ────────────────────────────────
|
||||
|
||||
test.describe('Viewport control', () => {
|
||||
test('set_viewport scrollToContent works without animation delay', async ({ page, request }) => {
|
||||
await page.goto('/');
|
||||
await expect(page.locator('.status span')).toContainText('Connected', { timeout: 5000 });
|
||||
await page.waitForTimeout(1000);
|
||||
|
||||
// Create some elements spread across the canvas
|
||||
await request.post(`${API}/api/elements/batch`, {
|
||||
data: {
|
||||
elements: [
|
||||
{ id: 'vp-el-1', type: 'rectangle', x: 0, y: 0, width: 200, height: 100 },
|
||||
{ id: 'vp-el-2', type: 'rectangle', x: 1000, y: 1000, width: 200, height: 100 },
|
||||
],
|
||||
},
|
||||
});
|
||||
|
||||
await page.waitForTimeout(500);
|
||||
|
||||
// Elements should exist
|
||||
const listRes = await request.get(`${API}/api/elements`);
|
||||
const listBody = await listRes.json();
|
||||
expect(listBody.count).toBe(2);
|
||||
});
|
||||
});
|
||||
|
||||
// ─── Fix 4: Screenshot capture ──────────────────────────────
|
||||
|
||||
test.describe('Screenshot and image export', () => {
|
||||
test('export image endpoint works with browser connected', async ({ page, request }) => {
|
||||
await page.goto('/');
|
||||
await expect(page.locator('.status span')).toContainText('Connected', { timeout: 5000 });
|
||||
await page.waitForTimeout(1000);
|
||||
|
||||
// Create an element so there's something to capture
|
||||
await request.post(`${API}/api/elements`, {
|
||||
data: {
|
||||
id: 'screenshot-el',
|
||||
type: 'rectangle',
|
||||
x: 100,
|
||||
y: 100,
|
||||
width: 200,
|
||||
height: 100,
|
||||
backgroundColor: '#ff6b6b',
|
||||
},
|
||||
});
|
||||
await page.waitForTimeout(500);
|
||||
|
||||
// Request a screenshot (full scene export)
|
||||
const exportRes = await request.post(`${API}/api/export/image`, {
|
||||
data: { format: 'png', background: true },
|
||||
});
|
||||
expect(exportRes.ok()).toBe(true);
|
||||
const exportBody = await exportRes.json();
|
||||
expect(exportBody.success).toBe(true);
|
||||
expect(exportBody.format).toBe('png');
|
||||
expect(typeof exportBody.data).toBe('string');
|
||||
expect(exportBody.data.length).toBeGreaterThan(100); // non-trivial base64
|
||||
});
|
||||
|
||||
test('viewport screenshot (captureViewport) works with browser connected', async ({ page, request }) => {
|
||||
await page.goto('/');
|
||||
await expect(page.locator('.status span')).toContainText('Connected', { timeout: 5000 });
|
||||
await page.waitForTimeout(1000);
|
||||
|
||||
// Create an element
|
||||
await request.post(`${API}/api/elements`, {
|
||||
data: {
|
||||
id: 'vp-screenshot-el',
|
||||
type: 'rectangle',
|
||||
x: 100,
|
||||
y: 100,
|
||||
width: 200,
|
||||
height: 100,
|
||||
backgroundColor: '#4ecdc4',
|
||||
},
|
||||
});
|
||||
await page.waitForTimeout(500);
|
||||
|
||||
// Request a viewport screenshot
|
||||
const exportRes = await request.post(`${API}/api/export/image`, {
|
||||
data: { format: 'png', background: true, captureViewport: true },
|
||||
});
|
||||
expect(exportRes.ok()).toBe(true);
|
||||
const exportBody = await exportRes.json();
|
||||
expect(exportBody.success).toBe(true);
|
||||
expect(exportBody.format).toBe('png');
|
||||
expect(typeof exportBody.data).toBe('string');
|
||||
expect(exportBody.data.length).toBeGreaterThan(100);
|
||||
});
|
||||
});
|
||||
Reference in New Issue
Block a user