vitest-setup-optimized.ts•2.57 kB
/**
* Optimized global test setup for Vitest
* Lightweight setup focused on performance
*/
import { beforeEach, afterEach, vi } from 'vitest';
import { vol } from 'memfs';
import { EnvironmentManager } from '../../src/config/environment.js';
// Set test environment early
process.env.NODE_ENV = 'test';
process.env.VITEST = 'true';
// Increase max listeners to prevent warnings in tests that create many loggers
// Tests run in parallel and each may create loggers with transports that add exit listeners
process.setMaxListeners(100);
// Lightweight timer tracking
const timers = {
timeouts: new Set<NodeJS.Timeout>(),
intervals: new Set<NodeJS.Timeout>()
};
// Override global timer functions for tracking
const originalSetTimeout = global.setTimeout;
const originalSetInterval = global.setInterval;
global.setTimeout = ((fn: any, delay?: number, ...args: any[]) => {
const timer = originalSetTimeout(() => {
timers.timeouts.delete(timer);
fn(...args);
}, delay);
timers.timeouts.add(timer);
return timer;
}) as any;
global.setInterval = ((fn: any, delay?: number, ...args: any[]) => {
const timer = originalSetInterval(fn, delay, ...args);
timers.intervals.add(timer);
return timer;
}) as any;
// Fast timer cleanup
function cleanupTimers() {
timers.timeouts.forEach(t => clearTimeout(t));
timers.intervals.forEach(t => clearInterval(t));
timers.timeouts.clear();
timers.intervals.clear();
}
// Minimal setup before each test
beforeEach(() => {
// Reset memfs quickly
vol.reset();
// Clear vitest timers if fake
if (vi.isFakeTimers && vi.isFakeTimers()) {
vi.clearAllTimers();
}
});
// Fast cleanup after each test
afterEach(() => {
// Reset filesystem
vol.reset();
// Clean timers
cleanupTimers();
// Reset environment if it was used
if (EnvironmentManager.hasInstance?.()) {
EnvironmentManager.getInstance().reset();
}
// Clear test-specific globals
const globals = global as any;
if (globals.__TEST_PLATFORM__) {
delete globals.__TEST_PLATFORM__;
}
if (globals.__memfs_vol__) {
delete globals.__memfs_vol__;
}
});
// Make vol available for direct access
(global as any).__memfs_vol__ = vol;
// Performance monitoring for slow tests
if (process.env.TEST_PERF_MONITOR) {
let testStartTime: number;
beforeEach(() => {
testStartTime = Date.now();
});
afterEach((context) => {
const duration = Date.now() - testStartTime;
if (duration > 1000) {
console.warn(`Slow test detected: ${context.task.name} took ${duration}ms`);
}
});
}