test262/test/language/expressions/assignment/11.13.1-1-s.js

31 lines
799 B
JavaScript

// Copyright (c) 2012 Ecma International. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es5id: 11.13.1-1-s
description: >
Strict Mode - TypeError is thrown if The LeftHandSide is a
reference to a data property with the attribute value
{[[Writable]]:false} under strict mode
flags: [onlyStrict]
includes: [runTestCase.js]
---*/
function testcase() {
var obj = {};
Object.defineProperty(obj, "prop", {
value: 10,
writable: false,
enumerable: true,
configurable: true
});
try {
obj.prop = 20;
return false;
} catch (e) {
return e instanceof TypeError && obj.prop === 10;
}
}
runTestCase(testcase);