diff options
Diffstat (limited to 'js/src/tests/test262/built-ins/Proxy/isExtensible/trap-is-null-target-is-proxy.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Proxy/isExtensible/trap-is-null-target-is-proxy.js | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Proxy/isExtensible/trap-is-null-target-is-proxy.js b/js/src/tests/test262/built-ins/Proxy/isExtensible/trap-is-null-target-is-proxy.js new file mode 100644 index 0000000000..406c5969ea --- /dev/null +++ b/js/src/tests/test262/built-ins/Proxy/isExtensible/trap-is-null-target-is-proxy.js @@ -0,0 +1,32 @@ +// 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-isextensible +description: > + If "isExtensible" trap is null or undefined, [[IsExtensible]] call is + properly forwarded to [[ProxyTarget]] (which is also a Proxy object). +info: | + [[IsExtensible]] ( ) + + [...] + 4. Let target be O.[[ProxyTarget]]. + 5. Let trap be ? GetMethod(handler, "isExtensible"). + 6. If trap is undefined, then + a. Return ? IsExtensible(target). + + IsExtensible ( O ) + + 1. Assert: Type(O) is Object. + 2. Return ? O.[[IsExtensible]](). +features: [Proxy] +---*/ + +var plainObjectTarget = new Proxy({}, {}); +var plainObjectProxy = new Proxy(plainObjectTarget, { + isExtensible: null, +}); + +assert(Object.isExtensible(plainObjectProxy)); + +reportCompare(0, 0); |