test.mjs

// Copyright 2021 Google LLC
// 
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// 
//     https://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import {strict as assert, deepEqual} from 'assert'
import path from 'path'

{ // Only stdout is used during command substitution
  let hello = await $`echo Error >&2; echo Hello`
  let len = +(await $`echo ${hello} | wc -c`)
  assert(len === 6)
}

{ // Pass env var
  process.env.FOO = 'foo'
  let foo = await $`echo $FOO`
  assert(foo.stdout === 'foo\n')
}

{ // Arguments are quoted
  let bar = 'bar"";baz!$#^$\'&*~*%)({}||\\/'
  assert((await $`echo ${bar}`).stdout.trim() === bar)
}

{ // Undefined and empty string correctly quoted
  $`echo ${undefined}`
  $`echo ${''}`
}

{ // Can create a dir with a space in the name
  let name = 'foo bar'
  try {
    await $`mkdir /tmp/${name}`
  } finally {
    await fs.rmdir('/tmp/' + name)
  }
}

{ // Pipefail is on
  let p
  try {
    p = await $`cat /dev/not_found | sort`
  } catch (e) {
    console.log('Caught an exception -> ok')
    p = e
  }
  assert(p.exitCode !== 0)
}

{ // Env vars is safe to pass
  process.env.FOO = 'hi; exit 1'
  await $`echo $FOO`
}

{ // Globals are defined
  console.log(__filename, __dirname)
}

{ // toString() is called on arguments
  let foo = 0
  let p = await $`echo ${foo}`
  assert(p.stdout === '0\n')
}

{ // Can use array as an argument
  try {
    let files = ['./index.mjs', './zx.mjs', './package.json']
    await $`tar czf archive ${files}`
  } finally {
    await $`rm archive`
  }
}

{ // Scripts with no extension are working
  await $`node zx.mjs tests/no-extension`
}

{ // require() is working from stdin
  await $`node zx.mjs <<< 'require("./package.json").name'`
}

{ // Markdown scripts are working
  await $`node zx.mjs examples/markdown.md`
}

{ // TypeScript scripts are working
  await $`node zx.mjs tests/typescript.ts`
}

{ // Quiet mode is working
  let {stdout} = await $`node zx.mjs --quiet examples/markdown.md`
  assert(!stdout.includes('whoami'))
}

{ // Pipes are working
  let {stdout} = await $`echo "hello"`
    .pipe($`awk '{print $1" world"}'`)
    .pipe($`tr '[a-z]' '[A-Z]'`)
  assert(stdout === 'HELLO WORLD\n')

  try {
    let w = await $`echo foo`
      .pipe(fs.createWriteStream('/tmp/output.txt'))
    assert((await fs.readFile('/tmp/output.txt')).toString() === 'foo\n')

    let r = $`cat`
    fs.createReadStream('/tmp/output.txt')
      .pipe(r.stdin)
    assert((await r).stdout === 'foo\n')
  } finally {
    await fs.rm('/tmp/output.txt')
  }
}

{ // ProcessOutput thrown as error
  let err
  try {
    await $`wtf`
  } catch (p) {
    err = p
  }
  console.log(err)
  assert(err.exitCode > 0)
  console.log('☝️ Error above is expected')
}

{ // The pipe() throws if already resolved
  let out, p = $`echo "Hello"`
  await p
  try {
    out = await p.pipe($`less`)
  } catch (err) {
    console.log(err)
    assert.equal(err.message, `The pipe() method shouldn't be called after promise is already resolved!`)
    console.log('☝️ Error above is expected')
  }
  if (out) {
    assert.fail('Expected failure!')
  }
}

{ // ProcessOutput::exitCode doesn't throw
  assert(await $`grep qwerty README.md`.exitCode !== 0)
  assert(await $`[[ -f ${__filename} ]]`.exitCode === 0)
}

{ // nothrow() doesn't throw
  let {exitCode} = await nothrow($`exit 42`)
  assert(exitCode === 42)
}

{ // globby available
  assert(typeof globby === 'function')
  assert(typeof globby.globbySync === 'function')
  assert(typeof globby.globbyStream === 'function')
  assert(typeof globby.generateGlobTasks === 'function')
  assert(typeof globby.isDynamicPattern === 'function')
  assert(typeof globby.isGitIgnored === 'function')
  assert(typeof globby.isGitIgnoredSync === 'function')
  deepEqual(await globby('*.mjs'), ['index.mjs', 'test.mjs', 'zx.mjs'])
  console.log(chalk.greenBright('globby available'))
}

{ // Executes a script from PATH.
  const isWindows = process.platform === 'win32'
  const oldPath = process.env.PATH

  const envPathSeparator = isWindows ? ';' : ':'
  process.env.PATH += envPathSeparator + path.resolve('/tmp/')

  const toPOSIXPath = (_path) =>
    _path.split(path.sep).join(path.posix.sep)

  const zxPath = path.resolve('./zx.mjs')
  const zxLocation = isWindows ? toPOSIXPath(zxPath) : zxPath
  const scriptCode = `#!/usr/bin/env ${zxLocation}\nconsole.log('The script from path runs.')`

  try {
    await $`echo ${scriptCode}`
      .pipe(fs.createWriteStream('/tmp/script-from-path', {mode: 0o744}))
    await $`script-from-path`
  } finally {
    process.env.PATH = oldPath
    fs.rm('/tmp/script-from-path')
  }
}

{ // require() is working in ESM
  const {name, version} = require('./package.json')
  assert(typeof name === 'string')
  console.log(chalk.black.bgYellowBright(` ${name} version is ${version} `))
}

console.log(chalk.greenBright(' 🍺 Success!'))