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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/setPrototypeOf/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/setPrototypeOf/trap-is-null-target-is-proxy.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Proxy/setPrototypeOf/trap-is-null-target-is-proxy.js | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Proxy/setPrototypeOf/trap-is-null-target-is-proxy.js b/js/src/tests/test262/built-ins/Proxy/setPrototypeOf/trap-is-null-target-is-proxy.js new file mode 100644 index 0000000000..c9857e94aa --- /dev/null +++ b/js/src/tests/test262/built-ins/Proxy/setPrototypeOf/trap-is-null-target-is-proxy.js @@ -0,0 +1,42 @@ +// 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-setprototypeof-v +description: > + If "setPrototypeOf" trap is null or undefined, [[SetPrototypeOf]] call + is properly forwarded to [[ProxyTarget]] (which is also a Proxy object). +info: | + [[SetPrototypeOf]] ( V ) + + [...] + 5. Let target be O.[[ProxyTarget]]. + 6. Let trap be ? GetMethod(handler, "setPrototypeOf"). + 7. If trap is undefined, then + a. Return ? target.[[SetPrototypeOf]](V). + + OrdinarySetPrototypeOf ( O, V ) + + [...] + 8. Repeat, while done is false, + a. If p is null, set done to true. + b. Else if SameValue(p, O) is true, return false. + [...] +features: [Proxy] +---*/ + +var plainObject = {}; +var plainObjectTarget = new Proxy(plainObject, {}); +var plainObjectProxy = new Proxy(plainObjectTarget, { + setPrototypeOf: null, +}); + +Object.setPrototypeOf(plainObjectProxy, null); +assert.sameValue(Object.getPrototypeOf(plainObject), null); + +var cyclicPrototype = Object.create(plainObject); +assert.throws(TypeError, function() { + Object.setPrototypeOf(plainObjectProxy, cyclicPrototype); +}); + +reportCompare(0, 0); |