Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89
Commit: 93712b24bf
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256
Reviewed-by: https://github.com/sideshowbarker

Libraries/LibJS/Tests/builtins/Object/Object.freeze.js

@@ -0,0 +1,85 @@
+test("length is 1", () => {
+    expect(Object.freeze).toHaveLength(1);
+});
+
+describe("normal behavior", () => {
+    test("returns given argument", () => {
+        const o = {};
+        expect(Object.freeze(42)).toBe(42);
+        expect(Object.freeze("foobar")).toBe("foobar");
+        expect(Object.freeze(o)).toBe(o);
+    });
+
+    test("prevents addition of new properties", () => {
+        const o = {};
+        expect(o.foo).toBeUndefined();
+        Object.freeze(o);
+        o.foo = "bar";
+        expect(o.foo).toBeUndefined();
+    });
+
+    test("prevents deletion of existing properties", () => {
+        const o = { foo: "bar" };
+        expect(o.foo).toBe("bar");
+        Object.freeze(o);
+        delete o.foo;
+        expect(o.foo).toBe("bar");
+    });
+
+    test("prevents changing attributes of existing properties", () => {
+        const o = { foo: "bar" };
+        Object.freeze(o);
+        expect(Object.defineProperty(o, "foo", {})).toBe(o);
+        expect(Object.defineProperty(o, "foo", { configurable: false })).toBe(o);
+        expect(() => {
+            Object.defineProperty(o, "foo", { configurable: true });
+        }).toThrowWithMessage(TypeError, "Object's [[DefineOwnProperty]] method returned false");
+    });
+
+    test("prevents changing value of existing properties", () => {
+        const o = { foo: "bar" };
+        expect(o.foo).toBe("bar");
+        Object.freeze(o);
+        o.foo = "baz";
+        expect(o.foo).toBe("bar");
+    });
+
+    // #6469
+    test("works with indexed properties", () => {
+        const a = ["foo"];
+        expect(a[0]).toBe("foo");
+        Object.freeze(a);
+        a[0] = "bar";
+        expect(a[0]).toBe("foo");
+    });
+
+    test("works with properties that are already non-configurable", () => {
+        const o = {};
+        Object.defineProperty(o, "foo", {
+            value: "bar",
+            configurable: false,
+            writable: true,
+            enumerable: true,
+        });
+        expect(o.foo).toBe("bar");
+        Object.freeze(o);
+        o.foo = "baz";
+        expect(o.foo).toBe("bar");
+    });
+});
+
+test("does not override frozen function name", () => {
+    const func = Object.freeze(function () {
+        return 12;
+    });
+    const obj = Object.freeze({ name: func });
+    expect(obj.name()).toBe(12);
+});
+
+test("freeze with huge number of properties doesn't crash", () => {
+    const o = {};
+    for (let i = 0; i < 50_000; ++i) {
+        o["prop" + i] = 1;
+    }
+    Object.freeze(o);
+});