test/built-ins/Promise/prototype/finally/resolution-value-no-override.js


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// Copyright (C) 2017 Jordan Harband. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
author: Jordan Harband
description: finally on a fulfilled promise can not override the resolution value
esid: sec-promise.prototype.finally
features: [Promise.prototype.finally]
flags: [async]
includes: [promiseHelper.js]
---*/
var sequence = [];
var obj = {};
var p = Promise.resolve(obj);

p.finally(function () {
  sequence.push(1);
  assert.sameValue(arguments.length, 0, 'onFinally receives zero args');
  return {};
}).then(function (x) {
  sequence.push(2);
  assert.sameValue(x, obj, 'onFinally can not override the resolution value');
}).then(function() {
  checkSequence(sequence, "All expected callbacks called in correct order");
  $DONE();
}).catch($ERROR);