import xFs from 'fs'

import path from 'path'

import { filter as asyncFilter } from 'async'

const fs = xFs.promises

describe('check for orphan tests', () => {

test('all tests are in sub-directories', async () => {

// A known list of exceptions that can live outside of directories

const EXCEPTIONS = ['README.md', 'package.json']

const pathToTests = path.join(process.cwd(), 'tests')

// Get a list of files/directories in `/tests`

const testDirectory = await fs.readdir(pathToTests)

// Filter out our exceptions

let filteredList = testDirectory.filter((item) => !EXCEPTIONS.includes(item))

// Don't include directories

filteredList = await asyncFilter(

filteredList,

async (item) => !(await fs.stat(path.join(pathToTests, item))).isDirectory()

)

expect(filteredList).toHaveLength(0)

})

})