src/v8/test/webkit/fast/js/Promise-resolve-with-itself.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 Promise will be rejected if it is resolved with itself.');

var resolve;
var result;

var promise = new Promise(function(r) { resolve = r; });
promise.then(function () {
  testFailed('fulfilled');
}, function (error) {
  testPassed('rejected');
  result = error.toString();
  shouldBeEqualToString('result', 'TypeError: Chaining cycle detected for promise #<Promise>');
}).then(finishJSTest, finishJSTest);

resolve(promise);