diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/Object/getOwnPropertyDescriptors/proxy-undefined-descriptor.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Object/getOwnPropertyDescriptors/proxy-undefined-descriptor.js | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Object/getOwnPropertyDescriptors/proxy-undefined-descriptor.js b/js/src/tests/test262/built-ins/Object/getOwnPropertyDescriptors/proxy-undefined-descriptor.js new file mode 100644 index 000000000..6eb6c7071 --- /dev/null +++ b/js/src/tests/test262/built-ins/Object/getOwnPropertyDescriptors/proxy-undefined-descriptor.js @@ -0,0 +1,32 @@ +// Copyright (C) 2016 Jordan Harband. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +description: Object.getOwnPropertyDescriptors should filter out undefined OwnPropertyDescriptors +esid: sec-object.getownpropertydescriptors +author: Jordan Harband +featurewws: [Proxy] +includes: [proxyTrapsHelper.js] +---*/ + +var key = "a"; +var ownKeys = [key]; +var badProxyHandlers = { + getOwnPropertyDescriptor: function () {}, + ownKeys: function () { + return ownKeys; + } +}; +var proxy = new Proxy({}, badProxyHandlers); + +var keys = Reflect.ownKeys(proxy); +assert.notSameValue(keys, ownKeys, 'Object.keys returns a new Array'); +assert.sameValue(Array.isArray(keys), true, 'Object.keys returns an Array'); +assert.sameValue(keys.length, ownKeys.length, 'keys and ownKeys have the same length'); +assert.sameValue(keys[0], ownKeys[0], 'keys and ownKeys have the same contents'); + +var descriptor = Object.getOwnPropertyDescriptor(proxy, key); +assert.sameValue(descriptor, undefined, "Descriptor matches result of [[GetOwnPropertyDescriptor]] trap"); + +var result = Object.getOwnPropertyDescriptors(proxy); +assert.sameValue(key in result, false, "key is not present in result"); |