jerryscript/tests/jerry/es2015/arguments-iterator.js
Robert Fancsik 8b41bf306a
Introduce builtin intrinsic object to share property values between builtin objects (#3490)
Fixed:
 - Global symbol access
 - Array.prototype.values and Array.prototype[Symbol.iterator] must be the same function object

To test the new functionality arguments object Symbol.iterator property is added.

JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
2020-01-16 15:57:27 +01:00

51 lines
1.5 KiB
JavaScript

// 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 arrayPrototypeValues = Array.prototype.values;
function f_mapped() {
assert(typeof arguments[Symbol.iterator] === 'function');
assert(arguments[Symbol.iterator] === arrayPrototypeValues);
assert(Object.hasOwnProperty.call(arguments, Symbol.iterator));
let sum = 0;
for (a of arguments) {
sum += a;
}
return sum;
};
function f_unmapped(b = 2) {
assert(typeof arguments[Symbol.iterator] === 'function');
assert(arguments[Symbol.iterator] === arrayPrototypeValues);
assert(Object.hasOwnProperty.call(arguments, Symbol.iterator));
let sum = 0;
for (a of arguments) {
sum += a;
}
return sum;
};
assert(f_mapped(1, 2, 3, 4, 5) === 15);
assert(f_unmapped(1, 2, 3, 4, 5) === 15);
Object.defineProperty(Array.prototype, "values", { get : function () {
/* should not be executed */
assert(false);
}});
assert(f_mapped(1, 2, 3, 4, 5) === 15);
assert(f_unmapped(1, 2, 3, 4, 5) === 15);