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LibJS: Add missing cyclic prototype check to Object.setPrototypeOf()

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This commit is contained in:
Linus Groh 2021-06-07 22:56:16 +01:00
parent ebb40e7d7b
commit 4e555fae22
2 changed files with 30 additions and 4 deletions
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10
Userland/Libraries/LibJS/Tests/builtins/Object/Object.setPrototypeOf.js
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@ -40,4 +40,14 @@ describe("errors", () => {
expect(Object.setPrototypeOf(o, p)).toBe(o);
});
test("cyclic prototype chain", () => {
let o = {};
let p = {};
Object.setPrototypeOf(o, p);
expect(() => {
Object.setPrototypeOf(p, o);
}).toThrowWithMessage(TypeError, "Object's [[SetPrototypeOf]] method returned false");
});
});