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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/defineProperty/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/defineProperty/trap-is-null-target-is-proxy.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Proxy/defineProperty/trap-is-null-target-is-proxy.js | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Proxy/defineProperty/trap-is-null-target-is-proxy.js b/js/src/tests/test262/built-ins/Proxy/defineProperty/trap-is-null-target-is-proxy.js new file mode 100644 index 0000000000..0beb8e52a0 --- /dev/null +++ b/js/src/tests/test262/built-ins/Proxy/defineProperty/trap-is-null-target-is-proxy.js @@ -0,0 +1,59 @@ +// 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-defineownproperty-p-desc +description: > + If "defineProperty" trap is null or undefined, [[DefineOwnProperty]] call + is properly forwarded to [[ProxyTarget]] (which is also a Proxy object). +info: | + [[DefineOwnProperty]] (P, Desc) + + [...] + 5. Let target be O.[[ProxyTarget]]. + 6. Let trap be ? GetMethod(handler, "defineProperty"). + 7. If trap is undefined, then + a. Return ? target.[[DefineOwnProperty]](P, Desc). +features: [Proxy, Reflect] +includes: [propertyHelper.js] +---*/ + +var plainObject = Object.create(null); +Object.defineProperty(plainObject, "foo", { + configurable: false, +}); + +var plainObjectTarget = new Proxy(plainObject, {}); +var plainObjectProxy = new Proxy(plainObjectTarget, { + defineProperty: null, +}); + +assert.throws(TypeError, function() { + Object.defineProperty(plainObjectProxy, "foo", { + configurable: true, + }); +}); + +Object.defineProperty(plainObjectProxy, "bar", { + get: function() { + return 2; + }, +}); +assert.sameValue(plainObject.bar, 2); + + +var regExp = /(?:)/g; +var regExpTarget = new Proxy(regExp, {}); +var regExpProxy = new Proxy(regExpTarget, { + defineProperty: null, +}); + +assert( + Reflect.defineProperty(regExpProxy, "lastIndex", { + writable: false, + }) +); + +verifyNotWritable(regExp, "lastIndex"); + +reportCompare(0, 0); |