Implement String.prototype.localeCompare function

JerryScript-DCO-1.0-Signed-off-by: Zsolt Borbély zsborbely.u-szeged@partner.samsung.com

tests/jerry/string-prototype-localecompare.js

@@ -0,0 +1,54 @@
+// 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 str1 = "ab";
+var str2 = "cd";
+assert (str1.localeCompare(str1) === 0);
+assert (str1.localeCompare(str2) === -1);
+assert (str2.localeCompare(str1) === 1);
+
+var x = "32";
+var y = "-32";
+assert (y.localeCompare(-31) === 1);
+assert (y.localeCompare("") === 1);
+assert (y.localeCompare(-32) === 0);
+assert (x.localeCompare(33) === -1);
+assert (x.localeCompare() === -1);
+assert (x.localeCompare(null) === -1);
+assert (x.localeCompare(NaN) === -1);
+assert (x.localeCompare(Infinity) === -1);
+assert (x.localeCompare(-Infinity) === 1);
+
+var array1 = ["1", 2];
+var array2 = [3, 4];
+assert (String.prototype.localeCompare.call(42, array1) === 1);
+assert (String.prototype.localeCompare.call(array1, null) === -1);
+assert (String.prototype.localeCompare.call(array1, array1) === 0);
+assert (String.prototype.localeCompare.call(array1, array2) === -1);
+assert (String.prototype.localeCompare.call(array2, array1) === 1);
+
+try {
+  var res = String.prototype.localeCompare.call(null, 0);
+  assert (false);
+} catch (e) {
+  assert (e instanceof TypeError);
+}
+
+try {
+  var res = String.prototype.localeCompare.call();
+  assert (false);
+} catch (e) {
+  assert (e instanceof TypeError);
+}