// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.

'use strict'

const tap = require('tap')
const silentConsole = {
  log() {},
  error() {}
}
require('../common')
const assert = require('assert')
const Readable = require('../../lib/ours/index').Readable
class MyStream extends Readable {
  constructor(options) {
    super(options)
    this._chunks = 3
  }
  _read(n) {
    switch (this._chunks--) {
      case 0:
        return this.push(null)
      case 1:
        return setTimeout(() => {
          this.push('last chunk')
        }, 100)
      case 2:
        return this.push('second to last chunk')
      case 3:
        return process.nextTick(() => {
          this.push('first chunk')
        })
      default:
        throw new Error('?')
    }
  }
}
const ms = new MyStream()
const results = []
ms.on('readable', function () {
  let chunk
  while (null !== (chunk = ms.read())) results.push(String(chunk))
})
const expect = ['first chunksecond to last chunk', 'last chunk']
process.on('exit', function () {
  assert.strictEqual(ms._chunks, -1)
  assert.deepStrictEqual(results, expect)
  silentConsole.log('ok')
})

/* replacement start */
process.on('beforeExit', (code) => {
  if (code === 0) {
    tap.pass('test succeeded')
  } else {
    tap.fail(`test failed - exited code ${code}`)
  }
})
/* replacement end */
