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test(determinism): deterministic waits + stableShot screenshots; drop blind sleeps/ifs/retries

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Make the Playwright e2e + kicad suites deterministic so screenshot flake stops
tracing to timing races.

- Blind page.waitForTimeout -> condition waits (expect.poll, web-first
  assertions, waitUntil) + readiness helpers (waitForWxApp, waitForCanvasApp).
  Remaining sleeps are documented interaction dwells (annotated).
- Defensive "if element exists" branches -> loud asserts; label-fallback chains
  -> normalized clickMenuItemByText. First-run wizard for/if loops removed by
  seeding calculator/gerbview/pcbnew HTMLs.
- Screenshots: new stableShot(page, name) settles the render in-page (canvas
  hash over rAF) then writes a raw PNG to test-results/ for the existing offline
  gate (tools/screenshots vs baseline-screenshots). Replaces toHaveScreenshot,
  which did inline compare + its own baselines and had decoupled the specs from
  the real gate. scale:'css' pinned.
- retries: 0 in both configs.
- Guard: tests/tools/lint-determinism.ts (npm run lint:determinism) bans blind
  sleeps / toHaveScreenshot / inline retries / swallowed catches in specs;
  documented exceptions carry a marker. Rules in tests/TESTING.md.

Assertions, coverage, and renders unchanged (semantic-equivalence reviewed;
captures pixel-identical modulo inherent timer/timestamp/3d-raytrace variance).
Both suites green at retries:0 (e2e 340, kicad 92); ~35-61% faster.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BVX1pHMvRPYHdp6ZfEawrk
This commit is contained in:
Viktor Vaczi 2026-07-07 10:50:24 +02:00
commit 4c3a4cacd4
102 changed files with 2867 additions and 3407 deletions
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31
tests/e2e/earlysize.spec.ts
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@ -1,31 +1,44 @@
// Early Size Test - Verifies GetClientSize() returns reasonable values before Show()
// This reproduces KiCad's pattern where GetClientSize() is called in the constructor.
import { test, expect, tryLoadApp } from './utils/fixtures';
//
// Determinism: no waitForTimeout. Readiness via waitForWxApp (loud). The app emits its
// early client/frame size logs and a terminal PASS/FAIL during init; instead of sleeping
// 500ms we poll for the terminal PASS/FAIL marker, which guarantees every size log the
// assertions parse is already present. Static loaded/result states use stableShot.
import { test, expect, waitForWxApp } from './utils/fixtures';
import { stableShot } from './utils/element-tracker';
test.describe('Early GetClientSize() Tests', () => {
test('Early size test app loads successfully', async ({ page, testLogger }) => {
await page.goto('/standalone/earlysize/earlysize_test.html');
const loaded = await tryLoadApp(page);
await waitForWxApp(page);
await page.screenshot({ path: 'test-results/earlysize-01-loaded.png', fullPage: true });
await stableShot(page, 'earlysize-01-loaded.png', { fullPage: true });
const hasStartup = testLogger.consoleLogs.some(l => l.includes('[EARLYSIZE_TEST] Early size test app started'));
expect(loaded, 'Early size app should load').toBe(true);
expect(hasStartup, 'Startup log should be present').toBe(true);
expect(testLogger.errors.filter(e => !e.includes('favicon'))).toHaveLength(0);
});
test('GetClientSize() returns reasonable values before Show()', async ({ page, testLogger }) => {
await page.goto('/standalone/earlysize/earlysize_test.html');
const loaded = await tryLoadApp(page);
expect(loaded, 'App should load').toBe(true);
await waitForWxApp(page);
// Wait for the app to finish initialization
await page.waitForTimeout(500);
// Wait for the app to finish initialization: it logs a terminal PASS/FAIL result once
// its early size checks are done, which implies the client/frame size logs are present.
await expect
.poll(
() =>
testLogger.consoleLogs.some(
l => l.includes('[EARLYSIZE_TEST] PASS') || l.includes('[EARLYSIZE_TEST] FAIL'),
),
{ message: 'earlysize test should log its terminal PASS/FAIL result' },
)
.toBe(true);
await page.screenshot({ path: 'test-results/earlysize-02-result.png', fullPage: true });
await stableShot(page, 'earlysize-02-result.png', { fullPage: true });
// Check for early client size log
const clientSizeLogs = testLogger.consoleLogs.filter(l => l.includes('[EARLYSIZE_TEST] Early client size:'));