nodejs/test/parallel/test-wrap-js-stream-read-stop.js

// Flags: --expose-internals
'use strict';

require('../common');
const assert = require('assert');
const WrapStream = require('internal/wrap_js_stream');
const Stream = require('stream');

class FakeStream extends Stream {
  constructor() {
    super();
    this._paused = false;
  }

  pause() {
    this._paused = true;
  }

  resume() {
    this._paused = false;
  }

  isPaused() {
    return this._paused;
  }
}

const fakeStreamObj = new FakeStream();
const wrappedStream = new WrapStream(fakeStreamObj);

// Resume by wrapped stream upon construction
assert.strictEqual(fakeStreamObj.isPaused(), false);

fakeStreamObj.pause();

assert.strictEqual(fakeStreamObj.isPaused(), true);

fakeStreamObj.resume();

assert.strictEqual(wrappedStream.readStop(), 0);

assert.strictEqual(fakeStreamObj.isPaused(), true);