From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001 From: "Matt A. Tobin" Date: Fri, 2 Feb 2018 04:16:08 -0500 Subject: Add m-esr52 at 52.6.0 --- js/src/tests/ecma_6/Object/seal-proxy.js | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 js/src/tests/ecma_6/Object/seal-proxy.js (limited to 'js/src/tests/ecma_6/Object/seal-proxy.js') diff --git a/js/src/tests/ecma_6/Object/seal-proxy.js b/js/src/tests/ecma_6/Object/seal-proxy.js new file mode 100644 index 000000000..44bb685c8 --- /dev/null +++ b/js/src/tests/ecma_6/Object/seal-proxy.js @@ -0,0 +1,27 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ + +function logProxy(object = {}, handler = {}) { + var log = []; + var proxy = new Proxy(object, new Proxy(handler, { + get(target, propertyKey, receiver) { + log.push(propertyKey); + return target[propertyKey]; + } + })); + return {proxy, log}; +} + +// The order of operations is backwards when compared to ES6 draft rev 27 +// (2014 August 24), but see https://bugs.ecmascript.org/show_bug.cgi?id=3215 +// for an explanation on why the spec version is clearly wrong. + +var {proxy, log} = logProxy(); +Object.seal(proxy); +assertDeepEq(log, ["preventExtensions", "ownKeys"]); + +var {proxy, log} = logProxy(); +Object.seal(Object.seal(proxy)); +assertDeepEq(log, ["preventExtensions", "ownKeys", "preventExtensions", "ownKeys"]); + +reportCompare(0, 0); -- cgit v1.2.3