text: 'use strict';
  
  const {Writable} = require('stream');
  
  class DummyStream extends Writable {
    _write() {}
  }
  
  module.exports = {
    mockups: {
      Streams: {
        getStream(code) {
          if (code === 'MTIzCg==') {
            const stream = new DummyStream();
            return stream;
          }
        }
      }
    },
    tests: [{
      can: 'write stream contents',
      left: 'TG9yZW0gaXBzdW0K',
      right: 'MTIzCg==',
      output: null
    }]
  };
  