import { defineConfig } from 'vitest/config'

export default defineConfig({
  test: {
    environment: 'node',
    globals: true,
    setupFiles: ['./test/setup.ts'],
    // Run test files sequentially so concurrent DB tests do not interfere via
    // the shared MariaDB (global afterEach in test/setup.ts truncates list tables
    // which causes FK violations if two workers share the DB concurrently).
    sequence: {
      concurrent: false,
    },
    pool: 'forks',
    // singleFork: top-level in vitest 4.x (poolOptions removed in v4).
    // Runs all test files in one forked process so the shared MariaDB
    // teardown (afterEach in test/setup.ts) never races with inserts
    // from a concurrent worker.
    singleFork: true,
  },
})