js/src/jit-test/tests/proxy/testDirectProxyValidateProperty4.js

Thu, 22 Jan 2015 13:21:57 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Thu, 22 Jan 2015 13:21:57 +0100
branch
TOR_BUG_9701
changeset 15
b8a032363ba2
permissions
-rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

michael@0 1 load(libdir + "asserts.js");
michael@0 2
michael@0 3 /*
michael@0 4 * Throw a TypeError if both the current descriptor and the descriptor returned
michael@0 5 * by the trap are data descriptors, the current descriptor is non-configurable
michael@0 6 * and non-writable, and the descriptor returned by the trap is writable.
michael@0 7 */
michael@0 8 var target = {};
michael@0 9 Object.defineProperty(target, 'foo', {
michael@0 10 value: 'bar',
michael@0 11 writable: false,
michael@0 12 configurable: false
michael@0 13 });
michael@0 14 assertThrowsInstanceOf(function () {
michael@0 15 Object.getOwnPropertyDescriptor(new Proxy(target, {
michael@0 16 getOwnPropertyDescriptor: function (target, name) {
michael@0 17 return {
michael@0 18 value: 'bar',
michael@0 19 writable: true,
michael@0 20 configurable: false
michael@0 21 };
michael@0 22 }
michael@0 23 }), 'foo');
michael@0 24 }, TypeError);

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