feuerwerk/tools/e2e.mjs

#!/usr/bin/env node
/**
 * Headless end-to-end smoke test driven over the Chrome DevTools Protocol.
 * Usage: PATH=/opt/node22/bin:$PATH node tools/e2e.mjs <projectId> [baseUrl]
 * Writes screenshots to /tmp/gm-e2e-*.png and prints PASS/FAIL checks. No dependencies.
 *
 * Widgets are located through `window.__gm.locate(text)` (installed by the editor), so
 * the test does not depend on pixel coordinates.
 */
import { spawn } from 'node:child_process';
import { writeFileSync } from 'node:fs';

const projectId = process.argv[2];
const baseUrl = process.argv[3] ?? 'https://nockal.com/game-maker/';
if (!projectId) {
  console.error('usage: node tools/e2e.mjs <projectId> [baseUrl]');
  process.exit(2);
}
const PORT = 9333;
const W = 1280;
const H = 800;

const chrome = spawn('chromium', [
  '--headless', '--no-sandbox', '--disable-gpu', '--use-gl=swiftshader', '--enable-unsafe-swiftshader',
  `--remote-debugging-port=${PORT}`, `--window-size=${W},${H}`, '--hide-scrollbars', 'about:blank',
], { stdio: 'ignore' });

const sleep = (ms) => new Promise((r) => setTimeout(r, ms));

async function waitForChrome() {
  for (let i = 0; i < 50; i++) {
    try {
      const res = await fetch(`http://127.0.0.1:${PORT}/json/version`);
      if (res.ok) return res.json();
    } catch {}
    await sleep(200);
  }
  throw new Error('chromium did not start');
}

class CDP {
  constructor(ws) {
    this.ws = ws;
    this.id = 0;
    this.pending = new Map();
    this.listeners = [];
    ws.addEventListener('message', (ev) => {
      const msg = JSON.parse(ev.data);
      if (msg.id && this.pending.has(msg.id)) {
        const { resolve, reject } = this.pending.get(msg.id);
        this.pending.delete(msg.id);
        msg.error ? reject(new Error(msg.error.message)) : resolve(msg.result);
      } else if (msg.method) {
        for (const l of this.listeners) l(msg);
      }
    });
  }
  send(method, params = {}) {
    const id = ++this.id;
    this.ws.send(JSON.stringify({ id, method, params }));
    return new Promise((resolve, reject) => this.pending.set(id, { resolve, reject }));
  }
  on(fn) { this.listeners.push(fn); }
}

const consoleLog = [];
let failures = 0;
function check(name, ok, detail = '') {
  console.log(`${ok ? 'PASS' : 'FAIL'}  ${name}${detail ? ' – ' + detail : ''}`);
  if (!ok) failures++;
}

try {
  await waitForChrome();
  const target = await (await fetch(`http://127.0.0.1:${PORT}/json/new?about:blank`, { method: 'PUT' })).json();
  const ws = new WebSocket(target.webSocketDebuggerUrl);
  await new Promise((r) => ws.addEventListener('open', r));
  const cdp = new CDP(ws);
  await cdp.send('Page.enable');
  await cdp.send('Runtime.enable');
  await cdp.send('Emulation.setDeviceMetricsOverride', { width: W, height: H, deviceScaleFactor: 1, mobile: false });
  cdp.on((msg) => {
    if (msg.method === 'Runtime.consoleAPICalled') consoleLog.push(msg.params.args.map((a) => a.value ?? a.description).join(' '));
    if (msg.method === 'Runtime.exceptionThrown') consoleLog.push('EXCEPTION ' + (msg.params.exceptionDetails.exception?.description ?? msg.params.exceptionDetails.text));
  });

  const evaluate = async (expression) => (await cdp.send('Runtime.evaluate', { expression, awaitPromise: true, returnByValue: true })).result.value;
  const locate = async (text) => {
    const p = await evaluate(`window.__gm && window.__gm.locate(${JSON.stringify(text)})`);
    if (!p) throw new Error(`widget with text "${text}" not found`);
    return p;
  };
  const shot = async (name) => {
    const { data } = await cdp.send('Page.captureScreenshot', { format: 'png' });
    writeFileSync(`/tmp/gm-e2e-${name}.png`, Buffer.from(data, 'base64'));
  };
  const mouse = (type, x, y, button = 'left', extra = {}) =>
    cdp.send('Input.dispatchMouseEvent', { type, x, y, button, clickCount: type === 'mousePressed' || type === 'mouseReleased' ? 1 : 0, ...extra });
  const click = async (x, y, button = 'left') => {
    await mouse('mouseMoved', x, y);
    await mouse('mousePressed', x, y, button);
    await mouse('mouseReleased', x, y, button);
    await sleep(150);
  };
  const clickText = async (text, button = 'left') => {
    const p = await locate(text);
    await click(p.x, p.y, button);
  };
  const drag = async (x1, y1, x2, y2, steps = 12) => {
    await mouse('mouseMoved', x1, y1);
    await mouse('mousePressed', x1, y1);
    for (let i = 1; i <= steps; i++) {
      await mouse('mouseMoved', x1 + ((x2 - x1) * i) / steps, y1 + ((y2 - y1) * i) / steps, 'left', { buttons: 1 });
      await sleep(16);
    }
    await mouse('mouseReleased', x2, y2);
    await sleep(150);
  };
  const keyPress = async (key, code, opts = {}) => {
    await cdp.send('Input.dispatchKeyEvent', { type: 'keyDown', key, code, ...opts });
    await cdp.send('Input.dispatchKeyEvent', { type: 'keyUp', key, code, ...opts });
  };
  const typeText = async (text) => {
    for (const ch of text) await cdp.send('Input.insertText', { text: ch });
  };
  const api = async (route) => (await fetch(`${baseUrl}api/index.php?r=${route}`)).json();
  const sceneOf = (doc) => doc.project.assets.find((a) => a.type === 'scene');
  const stateJson = () => evaluate('JSON.stringify({ selection: __gm.state.selection, mode: __gm.state.mode, save: __gm.state.saveStatus, notice: __gm.state.notice })');

  await cdp.send('Page.navigate', { url: `${baseUrl}?project=${projectId}` });
  await sleep(4000);
  await shot('01-loaded');
  check('page loaded without exceptions', !consoleLog.some((l) => l.startsWith('EXCEPTION')), consoleLog.filter((l) => l.startsWith('EXCEPTION')).join(' | '));
  check('debug hook present', Boolean(await evaluate('Boolean(window.__gm)')));

  // 1. Select the blue crate in the hierarchy.
  await clickText('Blue crate');
  let s = JSON.parse(await stateJson());
  check('hierarchy click selects object', s.selection?.kind === 'object' && s.selection.objectId === 'o2', JSON.stringify(s.selection));
  await shot('02-object-selected');

  // 2. Rename via inspector: the name field sits right of the "Name" label.
  const nameLabel = await locate('Name');
  await click(nameLabel.x + 160, nameLabel.y);
  await keyPress('a', 'KeyA', { modifiers: 2, windowsVirtualKeyCode: 65 }); // Ctrl+A in the bridge input
  await typeText('Renamed crate');
  await shot('03-typing');
  await keyPress('Enter', 'Enter', { windowsVirtualKeyCode: 13 });
  await sleep(200);
  s = JSON.parse(await stateJson());
  const nameNow = await evaluate(`__gm.state.activeScene.objects.find(o => o.id === 'o2').name`);
  check('typing + Enter renamed the object', nameNow === 'Renamed crate', JSON.stringify(nameNow));
  await shot('04-renamed');

  // 3. Scrub the X field (right of the "X" label) by 100 px.
  const xLabel = await locate('X');
  await drag(xLabel.x + 160, xLabel.y, xLabel.x + 260, xLabel.y);
  const xNow = await evaluate(`__gm.state.activeScene.objects.find(o => o.id === 'o2').position.x`);
  check('scrubbing X moved the object', xNow > 120, `x=${xNow}`);
  await shot('05-scrubbed');

  // 4. Drag the red crate in the viewport. It is at world (-150,0); the view is centred
  //    on the origin, so compute its screen position from the viewport widget bounds.
  const center = await evaluate('__gm.viewportCenter()');
  await drag(center.x - 150, center.y, center.x - 50, center.y - 70);
  const o1Now = await evaluate(`JSON.stringify(__gm.state.activeScene.objects.find(o => o.id === 'o1').position)`);
  check('viewport drag moved the red crate', JSON.parse(o1Now).x > -150, o1Now);
  await shot('06-dragged');

  // 5. Autosave → server.
  await sleep(1800);
  const saved = await api(`projects/${projectId}`);
  const renamed = sceneOf(saved).objects.find((o) => o.id === 'o2');
  check('rename persisted', renamed.name === 'Renamed crate', renamed.name);
  check('scrub persisted', renamed.position.x > 120, JSON.stringify(renamed.position));
  check('override kept', renamed.overrides.color === 4491519, JSON.stringify(renamed.overrides));
  check('save status is saved', (JSON.parse(await stateJson())).save === 'saved');

  // 6. Undo three times (drag, scrub, rename) with Ctrl+Z, then redo once.
  await click(center.x, center.y + 200); // click empty viewport → deselect, drop focus
  for (let i = 0; i < 3; i++) {
    await keyPress('z', 'KeyZ', { modifiers: 2, windowsVirtualKeyCode: 90 });
    await sleep(80);
  }
  const afterUndo = JSON.parse(await evaluate(`JSON.stringify(__gm.state.activeScene.objects.map(o => ({ id: o.id, name: o.name, x: o.position.x })))`));
  check('undo reverted drag, scrub and rename', afterUndo[0].x === -150 && afterUndo[1].x === 120 && afterUndo[1].name === 'Blue crate', JSON.stringify(afterUndo));
  await keyPress('z', 'KeyZ', { modifiers: 10, windowsVirtualKeyCode: 90 }); // Ctrl+Shift+Z
  const afterRedo = await evaluate(`__gm.state.activeScene.objects.find(o => o.id === 'o2').name`);
  check('redo restored the rename', afterRedo === 'Renamed crate', afterRedo);
  await shot('07-undo-redo');

  // 7. Play with the renamed crate selected; arrow keys move it; Esc stops.
  await clickText('Renamed crate');
  const xBeforePlay = await evaluate(`__gm.state.activeScene.objects.find(o => o.id === 'o2').position.x`);
  await clickText('▶  Play');
  await sleep(300);
  s = JSON.parse(await stateJson());
  check('play mode entered', s.mode === 'play', JSON.stringify(s));
  await shot('08-playing');
  await cdp.send('Input.dispatchKeyEvent', { type: 'keyDown', key: 'ArrowRight', code: 'ArrowRight', windowsVirtualKeyCode: 39 });
  await sleep(700);
  await cdp.send('Input.dispatchKeyEvent', { type: 'keyUp', key: 'ArrowRight', code: 'ArrowRight', windowsVirtualKeyCode: 39 });
  await sleep(100);
  await shot('09-moved-in-play');
  await keyPress('Escape', 'Escape', { windowsVirtualKeyCode: 27 });
  await sleep(300);
  s = JSON.parse(await stateJson());
  check('escape stopped play', s.mode === 'edit', JSON.stringify(s));
  await shot('10-stopped');
  const o2AfterPlay = await evaluate(`__gm.state.activeScene.objects.find(o => o.id === 'o2').position.x`);
  check('play did not write back to the model', o2AfterPlay === xBeforePlay, `${o2AfterPlay} vs ${xBeforePlay}`);

  // 8. Context menu on the Crate asset → menu shows "Place in scene".
  await clickText('Crate', 'right');
  await sleep(200);
  const menuVisible = await evaluate(`Boolean(__gm.locate('Place in scene'))`);
  check('asset context menu opens', menuVisible);
  await shot('11-context-menu');
  await clickText('Place in scene');
  await sleep(200);
  const count = await evaluate('__gm.state.activeScene.objects.length');
  check('placing from the menu adds an object', count === 4, `objects=${count}`);

  // 9. Create a new asset through the + menu.
  await clickText('+');
  await sleep(150);
  await clickText('Sprite');
  await sleep(200);
  const assets = await evaluate(`JSON.stringify(__gm.state.project.assets.map(a => a.name))`);
  check('+ menu creates a sprite asset', JSON.parse(assets).includes('Sprite'), assets);
  await shot('12-new-asset');

  check('no exceptions during run', !consoleLog.some((l) => l.startsWith('EXCEPTION')), consoleLog.filter((l) => l.startsWith('EXCEPTION')).slice(0, 3).join(' | '));
  ws.close();
} catch (error) {
  console.error(error);
  failures++;
} finally {
  chrome.kill('SIGTERM');
}
if (consoleLog.length) console.log('--- console ---\n' + consoleLog.slice(0, 20).join('\n'));
process.exit(failures ? 1 : 0);