Implemented Array.prototype.lastIndexOf().

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

tests/jerry/array_prototype_lastindexof.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 obj = {};
+var array = ["foo", 19, "bar", obj, "foo", 29, "baz"];
+
+var index = array.lastIndexOf("foo");
+assert(index === 4);
+assert(array[index] === "foo");
+
+assert(array.lastIndexOf("foo", 3) === 0);
+assert(array.lastIndexOf("foo", -8) === -1);
+
+var index = array.lastIndexOf("baz");
+assert(index === 6);
+assert(array[index] === "baz");
+
+assert(array.lastIndexOf("baz", -2) === -1);
+
+var index = array.lastIndexOf(obj);
+assert(index === 3);
+assert(array[index] === obj);
+
+var arr = [];
+arr[4294967294] = "foo";
+assert(arr.lastIndexOf("foo", -1) === 4294967294)
+
+// Checking behavior when unable to get length
+var obj = { lastIndexOf : Array.prototype.lastIndexOf}
+Object.defineProperty(obj, 'length', { 'get' : function () { throw new ReferenceError ("foo"); } });
+
+try {
+	obj.lastIndexOf("bar");
+	assert(false);
+} catch (e) {
+	assert(e.message === "foo");
+	assert(e instanceof ReferenceError);
+}
+
+// Checking behavior when unable to get element
+var obj = { lastIndexOf : Array.prototype.lastIndexOf, length : 1}
+Object.defineProperty(obj, '0', { 'get' : function () { throw new ReferenceError ("foo"); } });
+
+try {
+	obj.lastIndexOf("bar");
+	assert(false);
+} catch (e) {
+	assert(e.message === "foo");
+	assert(e instanceof ReferenceError);
+}