Add new runtime tests

tests/jerry/N.arithmetics-2.js

@@ -0,0 +1,38 @@
+// Copyright 2014 Samsung Electronics Co., Ltd.
+//
+// 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 a = 21;
+var b = 10;
+var c;
+
+c = a + b;
+assert(c == 31);
+
+c = a - b;
+assert(c == 11);
+
+c = a * b;
+assert(c == 210);
+
+c = a / b;
+assert(c == 2.1);
+
+c = a % b;
+assert(c == 1);
+
+c = a++;
+assert(c == 21);
+
+c = a--;
+assert(c == 22);