diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/Proxy/defineProperty/trap-is-missing-target-is-proxy.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Proxy/defineProperty/trap-is-missing-target-is-proxy.js | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Proxy/defineProperty/trap-is-missing-target-is-proxy.js b/js/src/tests/test262/built-ins/Proxy/defineProperty/trap-is-missing-target-is-proxy.js new file mode 100644 index 0000000000..0731dd58bb --- /dev/null +++ b/js/src/tests/test262/built-ins/Proxy/defineProperty/trap-is-missing-target-is-proxy.js @@ -0,0 +1,50 @@ +// Copyright (C) 2020 Alexey Shvayka. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +esid: sec-proxy-object-internal-methods-and-internal-slots-defineownproperty-p-desc +description: > + If "defineProperty" trap is null or undefined, [[DefineOwnProperty]] call + is properly forwarded to [[ProxyTarget]] (which is also a Proxy object). +info: | + [[DefineOwnProperty]] (P, Desc) + + [...] + 5. Let target be O.[[ProxyTarget]]. + 6. Let trap be ? GetMethod(handler, "defineProperty"). + 7. If trap is undefined, then + a. Return ? target.[[DefineOwnProperty]](P, Desc). +features: [Proxy, Reflect] +---*/ + +var string = new String("str"); +var stringTarget = new Proxy(string, {}); +var stringProxy = new Proxy(stringTarget, {}); + +assert(Reflect.defineProperty(stringProxy, "4", {value: 4})); +assert.sameValue(string[4], 4); + +assert.throws(TypeError, function() { + Object.defineProperty(stringProxy, "0", { + value: "x", + }); +}); + +Object.preventExtensions(string); +assert(!Reflect.defineProperty(stringProxy, "foo", {value: 5})); + + +var func = function() {}; +var funcTarget = new Proxy(func, {}); +var funcProxy = new Proxy(funcTarget, {}); + +Object.defineProperty(funcProxy, "name", {value: "foo"}); +assert.sameValue(func.name, "foo"); + +assert.throws(TypeError, function() { + Object.defineProperty(funcProxy, "prototype", { + set: function(_value) {}, + }); +}); + +reportCompare(0, 0); |