redhot/lib/subcommand/test.js

TypeScript Monorepo Management

const { join } = require('path')
const { readdirSync } = require('fs')
const { isDirectory, isInitialized } = require('../util')

const Mocha = require('mocha')

exports.test = function test (program, config, workingDir) {
  program
    .command('test')
    .option('-o, --only <packageName>', 'Run linting in a single package')
    .description('Runs tests in all managed packages')
    .action(options => testLikeABoss(config, workingDir, options))
}

function testLikeABoss (config, workingDir, options) {
  isInitialized(config)

  const packages = options.only
    ? config.packages.filter(p => p === options.only)
    : config.packages

  if (packages.length === 0) {
    if (options.only) {
      return console.log('Cannot find package ' + options.only)
    }
    return console.log('Cannot find any packages to test :(')
  }

  const tsconfig = require(join(workingDir, 'tsconfig.json'))

  // this registers how to load .ts files
  require('ts-node').register(tsconfig)

  packages.forEach(function (packageName) {
    const packageDir = join(workingDir, packageName)
    const testDir = join(packageDir, 'test/')

    runTests(testDir)
  })
}

function runTests (testDir) {
  const files = getAllTSFilesInDirectory(testDir)

  const mocha = new Mocha()

  files.forEach(function (file) {
    mocha.addFile(file)
  })

  mocha.run()
}

function getAllTSFilesInDirectory (dir) {
  let files = []
  readdirSync(dir).filter(function (file) {
    const abspath = join(dir, file)

    if (isDirectory(abspath)) {
      files.push(...getAllTSFilesInDirectory(abspath))
    }

    if (file.substr(-3) === '.ts' || file.substr(-4) === '.tsx') {
      return files.push(abspath)
    }
  })

  return files
}