src/v8/test/webkit/fast/js/Promise-onFulfilled-deep.js

// Copyright 2014 the V8 project authors. All rights reserved.
// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
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// Flags: --harmony
'use strict';
description('Test whether deeply chained then-s work.');

var result;
var resolve;
var promise = new Promise(function (r) { resolve = r; });

for (var i = 0; i < 5000; ++i) {
  promise = promise.then(function (value) { return value + 1; }, function () { testFailed('rejected'); });
}

promise.then(function (value) {
  result = value;
  shouldBe('result', '5042');
}).then(finishJSTest, finishJSTest);

shouldBe('result', 'undefined');
resolve(42);