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Added unusual-javascript-constructs.js to test corner cases

JerryScript-DCO-1.0-Signed-off-by: Csaba Repasi [email protected]

Author: repasics

tests/jerry/unusual-javascript-constructs.js

@@ -0,0 +1,32 @@
+// Copyright JS Foundation and other contributors, http://js.foundation
+//
+// 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 x = [0];
+assert (x == x);
+assert (x == !x);
+assert (Array(3) == ",,");
+
+assert (!(null instanceof Object));
+
+assert (9999999999999999 == 10000000000000000);
+assert (0.1 + 0.2 != 0.3);
+
+assert ([] + [] == "");
+assert ([] + {} == "[object Object]");
+assert (eval ("{} + []") == 0);
+assert (isNaN (eval ("{} + {}")));
+assert ({} + [] == "[object Object]");
+assert (isNaN (eval ("{} + {}")));
+
+assert ((! + [] + [] + ![]).length === 9);