Migrate more tests from blink repository.

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

 // 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(
-"Tests accessing arguments with an out-of-bounds index in an inlined function when the arguments have not been created but might be."
+'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 p = false;
+var d = new Date(0);
+d.setMilliseconds(1);
 
-function foo() {
-    if (p)
-        return arguments;
-    return arguments[0];
-}
+var oldValue = d.getMilliseconds();
 
-function bar() {
-    return foo();
-}
-
-var expected = "\"undefined\"";
-for (var i = 0; i < 3000; ++i) {
-    if (i == 1000) {
-        p = true;
-        expected = "\"[object Arguments]\"";
-    }
-    if (i == 2000) {
-        p = false;
-        expected = "\"undefined\"";
-    }
-    result = "" + bar();
-    shouldBe("result", expected);
-}
-
+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());