921a6ad984
Rapid short games with a parallel chaos loop that has a 5% per-turn chance of firing one of: - rapid_clicks: 5 quick clicks at the player's own cards - tab_blur: window blur/focus event pair - brief_offline: 300ms network outage via context.setOffline Chaos counts roll up into ScenarioResult.customMetrics.chaos_fired. Important detail: chaos loop has a 3-second initial delay so room creation, joiners, and game start can complete without interference. Chaos during lobby setup (especially brief_offline) was causing #create-room-btn to go unstable. Verified: stress smoke with --games-per-room=3, 4 accounts + 1 CPU, first game completed with 37 turns and chaos events fired across all three event types. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
66 lines
2.0 KiB
TypeScript
66 lines
2.0 KiB
TypeScript
/**
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* Chaos injector — occasionally fires unexpected UI events while a
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* game is playing, to hunt race conditions and recovery bugs.
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*
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* Called from the stress scenario's background chaos loop. Each call
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* has `probability` of firing; when it fires it picks one random
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* event type and runs it against one session.
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*/
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import type { Session, Logger } from '../../core/types';
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export type ChaosEvent = 'rapid_clicks' | 'tab_blur' | 'brief_offline';
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const ALL_EVENTS: ChaosEvent[] = ['rapid_clicks', 'tab_blur', 'brief_offline'];
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function pickEvent(): ChaosEvent {
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return ALL_EVENTS[Math.floor(Math.random() * ALL_EVENTS.length)];
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}
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export async function maybeInjectChaos(
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session: Session,
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probability: number,
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logger: Logger,
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roomId: string,
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): Promise<ChaosEvent | null> {
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if (Math.random() >= probability) return null;
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const event = pickEvent();
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logger.info('chaos_injected', { room: roomId, session: session.key, event });
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try {
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switch (event) {
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case 'rapid_clicks': {
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// Fire 5 rapid clicks at the player's own cards
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for (let i = 0; i < 5; i++) {
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await session.page
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.locator(`#player-cards .card:nth-child(${(i % 6) + 1})`)
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.click({ timeout: 300 })
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.catch(() => {});
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}
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break;
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}
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case 'tab_blur': {
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// Briefly dispatch blur then focus — simulates user tabbing away
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await session.page.evaluate(() => {
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window.dispatchEvent(new Event('blur'));
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setTimeout(() => window.dispatchEvent(new Event('focus')), 200);
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});
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break;
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}
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case 'brief_offline': {
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// 300ms network outage — should trigger client reconnect logic
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await session.context.setOffline(true);
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await new Promise((r) => setTimeout(r, 300));
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await session.context.setOffline(false);
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break;
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}
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}
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} catch (err) {
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logger.warn('chaos_error', {
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event,
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error: err instanceof Error ? err.message : String(err),
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});
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}
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return event;
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}
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