'use strict';
require('../common');
const assert = require('assert');

const { Writable } = require('stream');

{
  const w = new Writable();
  assert.strictEqual(w.writableCorked, 0);
  w.uncork();
  assert.strictEqual(w.writableCorked, 0);
  w.cork();
  assert.strictEqual(w.writableCorked, 1);
  w.cork();
  assert.strictEqual(w.writableCorked, 2);
  w.uncork();
  assert.strictEqual(w.writableCorked, 1);
  w.uncork();
  assert.strictEqual(w.writableCorked, 0);
  w.uncork();
  assert.strictEqual(w.writableCorked, 0);
}