diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /js/src/tests/non262/Proxy/proxy-proto-lazy-props.js | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/tests/non262/Proxy/proxy-proto-lazy-props.js')
-rw-r--r-- | js/src/tests/non262/Proxy/proxy-proto-lazy-props.js | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/js/src/tests/non262/Proxy/proxy-proto-lazy-props.js b/js/src/tests/non262/Proxy/proxy-proto-lazy-props.js new file mode 100644 index 0000000000..c82c0f935b --- /dev/null +++ b/js/src/tests/non262/Proxy/proxy-proto-lazy-props.js @@ -0,0 +1,61 @@ +function makeProxyPrototype(target) { + return Object.setPrototypeOf(target, new Proxy({}, new Proxy({ + getPrototypeOf() { + return null; + }, + ownKeys() { + return []; + }, + get(t, pk, r) { + throw new Error("Unexpected [[Get]]: " + String(pk)); + } + }, { + get(t, pk, r) { + if (pk in t) + return Reflect.get(t, pk, r); + throw new Error("Unexpected trap called: " + pk); + } + }))); +} + +function enumerateMappedArgs(x) { + var a = makeProxyPrototype(arguments); + + // Delete all lazy properties and ensure no [[Has]] trap is called for them + // on the prototype chain. + delete a.length; + delete a.callee; + delete a[Symbol.iterator]; + delete a[0]; + + for (var k in a); +} +enumerateMappedArgs(0); + +function enumerateUnmappedArgs(x) { + "use strict"; + var a = makeProxyPrototype(arguments); + + delete a.length; + // delete a.callee; // .callee is non-configurable + delete a[Symbol.iterator]; + delete a[0]; + + for (var k in a); +} +enumerateUnmappedArgs(0); + +function enumerateFunction() { + var f = makeProxyPrototype(function named() {}); + + // delete f.prototype; // .prototype is non-configurable + delete f.length; + delete f.name; + + for (var k in f); +} +enumerateFunction(); + + +if (typeof reportCompare === "function") + reportCompare(0, 0); |