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/String/String.js

@@ -0,0 +1,42 @@
+test("constructor properties", () => {
+    expect(String).toHaveLength(1);
+    expect(String.name).toBe("String");
+});
+
+test("typeof", () => {
+    expect(typeof String()).toBe("string");
+    expect(typeof new String()).toBe("object");
+});
+
+test("length", () => {
+    expect(new String().length).toBe(0);
+    expect(new String("a").length).toBe(1);
+    expect(new String("\u180E").length).toBe(1);
+    expect(new String("\uDBFF\uDFFF").length).toBe(2);
+
+    // Issue #2280
+    expect("⛳".length).toBe(1);
+    expect("🔥".length).toBe(2);
+    expect("🔥🔥🔥".length).toBe(6);
+    expect("👨‍👩‍👦".length).toBe(8);
+    expect("👩‍❤️‍💋‍👩".length).toBe(11);
+});
+
+test("indices", () => {
+    expect("abc"[0]).toBe("a");
+    expect("abc"[1]).toBe("b");
+    expect("abc"[2]).toBe("c");
+    expect("abc"[3]).toBeUndefined();
+
+    expect("😀"[0]).toBe("\ud83d");
+    expect("😀"[1]).toBe("\ude00");
+    expect("😀"[2]).toBeUndefined();
+});
+
+test("properties", () => {
+    expect(Object.getOwnPropertyNames("")).toEqual(["length"]);
+    expect(Object.getOwnPropertyNames("a")).toEqual(["0", "length"]);
+    expect(Object.getOwnPropertyNames("ab")).toEqual(["0", "1", "length"]);
+    expect(Object.getOwnPropertyNames("abc")).toEqual(["0", "1", "2", "length"]);
+    expect(Object.getOwnPropertyNames("😀")).toEqual(["0", "1", "length"]);
+});