diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/Proxy/getOwnPropertyDescriptor/resultdesc-is-not-configurable-targetdesc-is-undefined.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Proxy/getOwnPropertyDescriptor/resultdesc-is-not-configurable-targetdesc-is-undefined.js | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Proxy/getOwnPropertyDescriptor/resultdesc-is-not-configurable-targetdesc-is-undefined.js b/js/src/tests/test262/built-ins/Proxy/getOwnPropertyDescriptor/resultdesc-is-not-configurable-targetdesc-is-undefined.js new file mode 100644 index 0000000000..0b10a46f15 --- /dev/null +++ b/js/src/tests/test262/built-ins/Proxy/getOwnPropertyDescriptor/resultdesc-is-not-configurable-targetdesc-is-undefined.js @@ -0,0 +1,50 @@ +// Copyright (C) 2015 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +es6id: 9.5.5 +description: > + Throws a TypeError exception if trap result is not configurable but target + property descriptor is undefined. +info: | + [[GetOwnProperty]] (P) + + ... + 2. Let handler be the value of the [[ProxyHandler]] internal slot of O. + ... + 5. Let target be the value of the [[ProxyTarget]] internal slot of O. + 6. Let trap be GetMethod(handler, "getOwnPropertyDescriptor"). + ... + 9. Let trapResultObj be Call(trap, handler, «target, P»). + ... + 12. Let targetDesc be target.[[GetOwnProperty]](P). + ... + 17. Let resultDesc be ToPropertyDescriptor(trapResultObj). + ... + 22. If resultDesc.[[Configurable]] is false, then + a. If targetDesc is undefined or targetDesc.[[Configurable]] is true, then + i. Throw a TypeError exception. + +features: [Proxy] +---*/ + +var target = {}; + +var p = new Proxy(target, { + getOwnPropertyDescriptor: function(t, prop) { + var foo = {}; + + Object.defineProperty(foo, "bar", { + configurable: false, + enumerable: true, + value: 1 + }); + + return Object.getOwnPropertyDescriptor(foo, prop); + } +}); + +assert.throws(TypeError, function() { + Object.getOwnPropertyDescriptor(p, "bar"); +}); + +reportCompare(0, 0); |