diff --git a/test/built-ins/Object/isFrozen/proxy-no-ownkeys-returned-keys-order.js b/test/built-ins/Object/isFrozen/proxy-no-ownkeys-returned-keys-order.js new file mode 100644 index 0000000000..44558b71e2 --- /dev/null +++ b/test/built-ins/Object/isFrozen/proxy-no-ownkeys-returned-keys-order.js @@ -0,0 +1,52 @@ +// Copyright (C) 2020 Alexey Shvayka. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. +/*--- +esid: sec-object.isfrozen +description: > + If Proxy "ownKeys" trap is missing, keys are sorted by type in ascending + chronological order. +info: | + TestIntegrityLevel ( O, level ) + + [...] + 6. Let keys be ? O.[[OwnPropertyKeys]](). + 7. For each element k of keys, do + a. Let currentDesc be ? O.[[GetOwnProperty]](k). + + [[OwnPropertyKeys]] ( ) + + [...] + 6. If trap is undefined, then + a. Return ? target.[[OwnPropertyKeys]](). + + OrdinaryOwnPropertyKeys ( O ) + + [...] + 3. For each own property key P of O such that Type(P) is String and P is + not an array index, in ascending chronological order of property creation, do + a. Add P as the last element of keys. + 4. For each own property key P of O such that Type(P) is Symbol, + in ascending chronological order of property creation, do + a. Add P as the last element of keys. + 5. Return keys. +features: [Proxy, Symbol, Reflect] +includes: [compareArray.js] +---*/ + +var target = {}; +var sym = Symbol(); +target[sym] = 1; +target.foo = 2; +target[0] = 3; +Object.freeze(target); + +var getOwnKeys = []; +var proxy = new Proxy(target, { + getOwnPropertyDescriptor: function(target, key) { + getOwnKeys.push(key); + return Reflect.getOwnPropertyDescriptor(target, key); + }, +}); + +Object.isFrozen(proxy); +assert.compareArray(getOwnKeys, ["0", "foo", sym]);