Implement Date.UTC and add a dummy implementation for Date.now

JerryScript-DCO-1.0-Signed-off-by: László Langó llango.u-szeged@partner.samsung.com

tests/jerry/date-utc.js

@@ -0,0 +1,49 @@
+// Copyright 2015 Samsung Electronics Co., Ltd.
+// Copyright 2015 University of Szeged.
+//
+// Licensed under the Apache License, Version 2.0 (the License);
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE, 2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an AS IS BASIS
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+var d;
+
+d = Date.UTC(undefined);
+assert (isNaN(d));
+
+d = Date.UTC({});
+assert (isNaN(d));
+
+d = Date.UTC(2015);
+assert (isNaN(d));
+
+d = Date.UTC(2000 + 15, 0);
+assert (d == 1420070400000);
+
+d = Date.UTC(2015, 0);
+assert (d == 1420070400000);
+
+d = Date.UTC(2015, 0, 1);
+assert (d == 1420070400000);
+
+d = Date.UTC(2015, 0, 1, 0);
+assert (d == 1420070400000);
+
+d = Date.UTC(2015, 0, 1, 0, 0);
+assert (d == 1420070400000);
+
+d = Date.UTC(2015, 0, 1, 0, 0, 0);
+assert (d == 1420070400000);
+
+d = Date.UTC(2015, 0, 1, 0, 0, 0, 0);
+assert (d == 1420070400000);
+
+d = Date.UTC(2015, 6, 3, 14, 35, 43, 123);
+assert (d == 1435934143123);