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LibJS: Fix Object.getOwnPropertyDescriptor() attributes for numeric property

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We were getting the attributes of the existing value and then
immediately assigned the default attributes instead.
This commit is contained in:
Linus Groh 2021-04-20 18:42:10 +02:00
parent 09f8d52b00
commit 614bad86bc
Notes: sideshowbarker 2024-07-18 19:19:54 +09:00 
Author: https://github.com/linusg
Commit: https://github.com/SerenityOS/serenity/commit/614bad86bc0
2 changed files with 11 additions and 3 deletions
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1
Userland/Libraries/LibJS/Runtime/Object.cpp
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@ -387,7 +387,6 @@ Optional<PropertyDescriptor> Object::get_own_property_descriptor(const PropertyN
return {};
value = existing_value.value().value;
attributes = existing_value.value().attributes;
attributes = default_attributes;
} else {
auto metadata = shape().lookup(property_name.to_string_or_symbol());
if (!metadata.has_value())

13
Userland/Libraries/LibJS/Tests/builtins/Object/Object.getOwnPropertyDescriptor.js
View file

@ -46,11 +46,13 @@ test("setter property", () => {
test("defined property", () => {
let o = {};
Object.defineProperty(o, "foo", {
const attributes = {
enumerable: false,
writable: true,
value: 10,
});
};
Object.defineProperty(o, "foo", attributes);
Object.defineProperty(o, 1, attributes);
expect(o).not.toHaveConfigurableProperty("foo");
expect(o).not.toHaveEnumerableProperty("foo");
@ -58,4 +60,11 @@ test("defined property", () => {
expect(o).toHaveValueProperty("foo", 10);
expect(o).not.toHaveGetterProperty("foo");
expect(o).not.toHaveSetterProperty("foo");
expect(o).not.toHaveConfigurableProperty(1);
expect(o).not.toHaveEnumerableProperty(1);
expect(o).toHaveWritableProperty(1);
expect(o).toHaveValueProperty(1, 10);
expect(o).not.toHaveGetterProperty(1);
expect(o).not.toHaveSetterProperty(1);
});