eslint-config-conventions/test/validate-config.js

const test = require('node:test')
const assert = require('node:assert/strict')

const { ESLint } = require('eslint')

const eslint = new ESLint({
  ignore: false,
  useEslintrc: false,
  overrideConfigFile: 'eslintrc.json'
})

test('ensure we validate correctly JavaScript files', async () => {
  const [noErrors] = await eslint.lintFiles(
    'test/fixtures/javascript-no-errors.js'
  )
  const [withErrors] = await eslint.lintFiles(
    'test/fixtures/javascript-with-errors.js'
  )
  assert.strictEqual(noErrors?.errorCount, 0)
  assert.strictEqual(withErrors?.errorCount, 3)
})

test('ensure we validate correctly TypeScript files', async () => {
  const [noErrors] = await eslint.lintFiles(
    'test/fixtures/typescript-no-errors.ts'
  )
  const [withErrors] = await eslint.lintFiles(
    'test/fixtures/javascript-with-errors.js'
  )
  assert.strictEqual(noErrors?.errorCount, 0)
  assert.strictEqual(withErrors?.errorCount, 3)
})

test('ensure we allow top-level await', async () => {
  const [lintResult] = await eslint.lintFiles(
    'test/fixtures/top-level-await.mjs'
  )
  assert.strictEqual(lintResult?.errorCount, 0)
})