v8/test/webkit/fast/js/date-preserve-milliseconds.js

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// Copyright 2013 the V8 project authors. All rights reserved.
// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. 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.
//
// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS 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.
description(
'The following test checks if an existing milliseconds value gets preserved if a call to setHours(), setMinutes() or setSeconds() does not specify the milliseconds. See <a href="https://bugs.webkit.org/show_bug.cgi?id=3759">https://bugs.webkit.org/show_bug.cgi?id=3759</a>'
);
var d = new Date(0);
d.setMilliseconds(1);
var oldValue = d.getMilliseconds();
d.setHours(8);
shouldBe("d.getMilliseconds()", oldValue.toString());
d.setHours(8, 30);
shouldBe("d.getMilliseconds()", oldValue.toString());
d.setHours(8, 30, 40);
shouldBe("d.getMilliseconds()", oldValue.toString());
d.setMinutes(45);
shouldBe("d.getMilliseconds()", oldValue.toString());
d.setMinutes(45, 40);
shouldBe("d.getMilliseconds()", oldValue.toString());
d.setSeconds(50);
shouldBe("d.getMilliseconds()", oldValue.toString());