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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /js/src/tests/test262/built-ins/Proxy/preventExtensions/trap-is-null-target-is-proxy.js | |
parent | Initial commit. (diff) | |
download | firefox-esr-upstream.tar.xz firefox-esr-upstream.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/tests/test262/built-ins/Proxy/preventExtensions/trap-is-null-target-is-proxy.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Proxy/preventExtensions/trap-is-null-target-is-proxy.js | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Proxy/preventExtensions/trap-is-null-target-is-proxy.js b/js/src/tests/test262/built-ins/Proxy/preventExtensions/trap-is-null-target-is-proxy.js new file mode 100644 index 0000000000..c35cf085b1 --- /dev/null +++ b/js/src/tests/test262/built-ins/Proxy/preventExtensions/trap-is-null-target-is-proxy.js @@ -0,0 +1,29 @@ +// 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-preventextensions +description: > + If "preventExtensions" trap is null or undefined, [[PreventExtensions]] call + is properly forwarded to [[ProxyTarget]] (which is also a Proxy object). +info: | + [[PreventExtensions]] ( ) + + [...] + 4. Let target be O.[[ProxyTarget]]. + 5. Let trap be ? GetMethod(handler, "preventExtensions"). + 6. If trap is undefined, then + a. Return ? target.[[PreventExtensions]](). +features: [Proxy] +---*/ + +var plainObject = {}; +var plainObjectTarget = new Proxy(plainObject, {}); +var plainObjectProxy = new Proxy(plainObjectTarget, { + preventExtensions: null, +}); + +Object.preventExtensions(plainObjectProxy); +assert(!Object.isExtensible(plainObject)); + +reportCompare(0, 0); |