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// Copyright 2012 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Flags: --allow-natives-syntax
var ordering = [];
function reset() {
ordering = [];
}
function assertArrayValues(expected, actual) {
assertEquals(expected.length, actual.length);
for (var i = 0; i < expected.length; i++) {
assertEquals(expected[i], actual[i]);
}
}
function assertOrdering(expected) {
%PerformMicrotaskCheckpoint();
assertArrayValues(expected, ordering);
}
function newPromise(id, fn) {
var r;
var t = 1;
var promise = new Promise(function(resolve) {
r = resolve;
if (fn) fn();
});
var next = promise.then(function(value) {
ordering.push('p' + id);
return value;
});
return {
resolve: r,
then: function(fn) {
next = next.then(function(value) {
ordering.push('p' + id + ':' + t++);
return fn ? fn(value) : value;
});
return this;
}
};
}
(function PromiseThens() {
reset();
var p1 = newPromise(1).then();
var p2 = newPromise(2).then();
p1.resolve();
p2.resolve();
assertOrdering(['p1', 'p2', 'p1:1', 'p2:1']);
})();
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