fusion/packages/desktop/vitest.config.ts

import { defineConfig } from "vitest/config";
import { cpus } from "node:os";

const defaultMaxWorkers = Math.max(1, cpus().length - 1);
const requestedMaxWorkers = Number.parseInt(process.env.VITEST_MAX_WORKERS ?? String(defaultMaxWorkers), 10);
const maxWorkers = Math.max(1, Number.isFinite(requestedMaxWorkers) ? requestedMaxWorkers : defaultMaxWorkers);
process.env.VITEST_MAX_WORKERS = String(maxWorkers);

export default defineConfig({
  test: {
    testTimeout: 30_000,
    hookTimeout: 30_000,
    maxWorkers,
    poolOptions: { threads: { minThreads: 1, maxThreads: maxWorkers }, forks: { minForks: 1, maxForks: maxWorkers } },
    fileParallelism: true,
    passWithNoTests: true,
    projects: [
      {
        test: {
          name: "desktop",
          include: ["src/__tests__/**/*.test.ts"],
          pool: "threads",
          isolate: true,
        },
      },
      {
        test: {
          name: "desktop-renderer",
          include: ["src/renderer/**/*.test.ts", "src/renderer/**/*.test.tsx"],
          environment: "jsdom",
          isolate: true,
        },
      },
    ],
  },
});