Implemented Array.prototype.concat()

JerryScript-DCO-1.0-Signed-off-by: Dániel Bátyai dbatyai.u-szeged@partner.samsung.com
JerryScript-DCO-1.0-Signed-off-by: Szilard Ledan szledan.u-szeged@partner.samsung.com

tests/jerry/array_prototype_concat.js

@@ -0,0 +1,62 @@
+// 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 array = ["foo", [], Infinity, 4]
+var new_arr = array.concat();
+
+assert(new_arr.length === array.length)
+for (i = 0; i < array.length; i++) {
+	assert(array[i] === new_arr[i]);
+}
+
+var obj = {};
+var arr1 = ["Apple", 6, "Peach"];
+var arr2 = [obj, "Cherry", "Grape"];
+
+var new_array = arr1.concat(arr2, obj, 1);
+
+assert(new_array.length === 8);
+assert(new_array[0] === "Apple");
+assert(new_array[1] === 6);
+assert(new_array[2] === "Peach");
+assert(new_array[3] === obj);
+assert(new_array[4] === "Cherry");
+assert(new_array[5] === "Grape");
+assert(new_array[6] === obj);
+assert(new_array[7] === 1);
+
+// Checking behavior when unable to get length
+var obj = { concat : Array.prototype.concat }
+Object.defineProperty(obj, 'length', { 'get' : function () {throw new ReferenceError ("foo"); } });
+
+try {
+	obj.concat();
+	assert(false);
+} catch (e) {
+	assert(e.message === "foo");
+	assert(e instanceof ReferenceError);
+}
+
+// Checking behavior when unable to get element
+var obj = { concat : Array.prototype.concat, length : 1 }
+Object.defineProperty(obj, '0', { 'get' : function () {throw new ReferenceError ("foo"); } });
+
+try {
+	obj.concat();
+	assert(false);
+} catch (e) {
+	assert(e.message === "foo");
+	assert(e instanceof ReferenceError);
+}