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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/non262/Symbol/symbol-object-not-unboxed-for-value-to-id.js | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.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/tests/non262/Symbol/symbol-object-not-unboxed-for-value-to-id.js | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/tests/non262/Symbol/symbol-object-not-unboxed-for-value-to-id.js b/js/src/tests/non262/Symbol/symbol-object-not-unboxed-for-value-to-id.js new file mode 100644 index 0000000000..d889a77162 --- /dev/null +++ b/js/src/tests/non262/Symbol/symbol-object-not-unboxed-for-value-to-id.js @@ -0,0 +1,31 @@ +// Create a symbol and a wrapper for it. +var s = Symbol(); +var so = Object(s); + +// Create a symbol-valued property key using |s|. +var o = {[s]: 0}; + +// The default Symbol.prototype[@@toPrimitive] will unbox the symbol object as needed. +assertEq(o.propertyIsEnumerable(so), true); +assertEq(o.hasOwnProperty(so), true); + +// After redefining Symbol.prototype[@@toPrimitive], any calls to the ToPropertyKey +// abstract operation will no longer unbox the symbol object. +Object.defineProperty(Symbol.prototype, Symbol.toPrimitive, { + value: function() { + return "foo"; + } +}); + +// |o| doesn't have a string-valued property named "foo". +assertEq(o.propertyIsEnumerable(so), false); +assertEq(o.hasOwnProperty(so), false); + +o.foo = 123; + +// After |o.foo| was added, both calls should return true again. +assertEq(o.propertyIsEnumerable(so), true); +assertEq(o.hasOwnProperty(so), true); + +if (typeof reportCompare === "function") + reportCompare(0, 0); |