diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/Proxy/getOwnPropertyDescriptor/trap-is-null-target-is-proxy.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Proxy/getOwnPropertyDescriptor/trap-is-null-target-is-proxy.js | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Proxy/getOwnPropertyDescriptor/trap-is-null-target-is-proxy.js b/js/src/tests/test262/built-ins/Proxy/getOwnPropertyDescriptor/trap-is-null-target-is-proxy.js new file mode 100644 index 0000000000..3e4d33c74e --- /dev/null +++ b/js/src/tests/test262/built-ins/Proxy/getOwnPropertyDescriptor/trap-is-null-target-is-proxy.js @@ -0,0 +1,64 @@ +// 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-getownproperty-p +description: > + If "getOwnPropertyDescriptor" trap is null or undefined, [[GetOwnProperty]] + call is properly forwarded to [[ProxyTarget]] (which is also a Proxy object). +info: | + [[GetOwnProperty]] ( P ) + + [...] + 5. Let target be O.[[ProxyTarget]]. + 6. Let trap be ? GetMethod(handler, "getOwnPropertyDescriptor"). + 7. If trap is undefined, then + a. Return ? target.[[GetOwnProperty]](P). +includes: [propertyHelper.js] +features: [Proxy] +---*/ + +var plainObjectTarget = new Proxy({foo: 1}, {}); +var plainObjectProxy = new Proxy(plainObjectTarget, { + getOwnPropertyDescriptor: null, +}); + +verifyProperty(plainObjectProxy, "bar", undefined); +verifyProperty(plainObjectProxy, "foo", { + value: 1, + writable: true, + enumerable: true, + configurable: true, +}); + + +var fooDescriptor = { + get: function() {}, + set: function(_value) {}, + enumerable: false, + configurable: true, +}; + +var target = new Proxy({}, { + getOwnPropertyDescriptor: function(_target, key) { + if (key === "foo") { + return fooDescriptor; + } + }, + deleteProperty: function(_target, key) { + if (key === "foo") { + fooDescriptor = undefined; + } + + return true; + }, +}); + +var proxy = new Proxy(target, { + getOwnPropertyDescriptor: null, +}); + +verifyProperty(proxy, "bar", undefined); +verifyProperty(proxy, "foo", fooDescriptor); + +reportCompare(0, 0); |