constant.js/tests/promise.js

Immutable/Constant JS-Object

/*
** Copyright 2017 Bloomberg Finance L.P.
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
**     http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/

'use strict';

var tap = require('tap');
var constant = require('../');

tap.test('promise', function (test) {
  test.plan(2);
  var pro = constant(Promise.resolve('hallo'));
  test.throws(function () { pro.value = 'something'; });
  return pro.then(function (val) {
    test.equal(val, 'hallo');
  });
});