test-repl-use-global.js

'use strict';

// Flags: --expose-internals

const stream = require('stream');
const REPL = require('internal/repl');
const assert = require('assert');

testDefault();
testFalse();

function testDefault() {

  global.lunch = 'tacos';

  const inputStream = new stream.PassThrough();
  const outputStream = new stream.PassThrough();

  outputStream.accum = '';

  outputStream.on('data', (data) => {
    outputStream.accum += data;
  });

  const opts = {
    input: inputStream,
    output: outputStream,
    useColors: false,
    terminal: false,
    prompt: ''
  };

  REPL.createInternalRepl(process.env, opts, function(err, repl) {

    if (err) throw err;
    repl.write('global.lunch\n;');
    assert.equal(outputStream.accum.trim(), '\'tacos\'');
    repl.close();
  });
}

function testFalse() {

  global.lunch = 'tacos';

  const inputStream = new stream.PassThrough();
  const outputStream = new stream.PassThrough();

  outputStream.accum = '';

  outputStream.on('data', (data) => {
    outputStream.accum += data;
  });

  const opts = {
    input: inputStream,
    output: outputStream,
    useColors: false,
    terminal: false,
    useGlobal: false,
    prompt: ''
  };

  REPL.createInternalRepl(process.env, opts, function(err, repl) {

    if (err) throw err;
    repl.write('global.lunch\n;');
    assert.equal(outputStream.accum.trim(), 'undefined');
    repl.close();
  });
}