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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/jit-test/tests/proxy/bug-862848-1.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 '')
-rw-r--r-- | js/src/jit-test/tests/proxy/bug-862848-1.js | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/proxy/bug-862848-1.js b/js/src/jit-test/tests/proxy/bug-862848-1.js new file mode 100644 index 0000000000..870b5632c3 --- /dev/null +++ b/js/src/jit-test/tests/proxy/bug-862848-1.js @@ -0,0 +1,24 @@ +// obj.hasOwnProperty(id), Object.getOwnPropertyDescriptor(obj, id), and +// Object.defineProperty(obj, id, desc) do not look at obj's prototype. + +var angryHandler = new Proxy({}, { + has: () => true, + get: (t, id) => { + throw new Error("angryHandler should not be queried (" + id + ")"); + } +}); +var angryProto = new Proxy({}, angryHandler); + +var obj = Object.create(angryProto, { + // Define hasOwnProperty directly on obj since we are poisoning its + // prototype chain. + hasOwnProperty: { + value: Object.prototype.hasOwnProperty + } +}); + +assertEq(Object.getOwnPropertyDescriptor(obj, "foo"), undefined); +assertEq(obj.hasOwnProperty("foo"), false); +Object.defineProperty(obj, "foo", {value: 5}); +assertEq(obj.hasOwnProperty("foo"), true); +assertEq(obj.foo, 5); |