Run load tests

Load test files (<name>.load.ts) match buddyConfigDefaults.include.testLoad. Neither preset runs them unless you opt in, and coverage never counts them as source.

Steps

1. Name load test files <name>.load.ts (or .js, .cjs, .mjs, .cts, .mts) under src, source, code, or tests.

2. Create a config that runs only load tests. Use buddyConfigDefaults without a preset, because a preset always adds its own test globs:

   vitest.load.config.ts

   import { defineConfig } from 'vitest/config'
   import { buddyConfigDefaults } from '@repobuddy/vitest/config/node'
   
   export default defineConfig({
     test: {
       ...buddyConfigDefaults.test,
       include: buddyConfigDefaults.include.testLoad,
     },
   })

   Do not name it vitest.config.load.ts when your root config uses projects: ['vitest.config.*.ts']. That pattern would add it to every run.

3. Add a script:

   {
     "scripts": {
       "test:load": "vitest run --config vitest.load.config.ts"
     }
   }

To run load tests together with the other tests instead, pass includeLoadTests: true to the preset. Then every run of that config includes them:

export default defineConfig({
  plugins: [nodeTestPreset({ includeLoadTests: true })],
})

Finished config

vitest.load.config.ts

import { defineConfig } from 'vitest/config'
import { buddyConfigDefaults } from '@repobuddy/vitest/config/node'

export default defineConfig({
  test: {
    ...buddyConfigDefaults.test,
    include: buddyConfigDefaults.include.testLoad,
  },
})

This config does not set TZ. Set it in the script (TZ=GMT vitest run ...) if your load tests depend on it.

Verify

1. Create src/sum.load.ts with one test.
2. Run pnpm test. The load test does not run.
3. Run pnpm test:load. Only the load test runs.

Related

• Test file names
• buddyConfigDefaults
• nodeTestPreset()