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/classes/class-constructor.js

@@ -0,0 +1,74 @@
+test("property initialization", () => {
+    class A {
+        constructor() {
+            this.x = 3;
+        }
+    }
+
+    expect(new A().x).toBe(3);
+});
+
+test("method initialization", () => {
+    class A {
+        constructor() {
+            this.x = () => 10;
+        }
+    }
+
+    expect(new A().x()).toBe(10);
+});
+
+test("initialize to class method", () => {
+    class A {
+        constructor() {
+            this.x = this.method;
+        }
+
+        method() {
+            return 10;
+        }
+    }
+
+    expect(new A().x()).toBe(10);
+});
+
+test("constructor length affects class length", () => {
+    class A {
+        constructor() {}
+    }
+
+    expect(A).toHaveLength(0);
+
+    class B {
+        constructor(a, b, c = 2) {}
+    }
+
+    expect(B).toHaveLength(2);
+});
+
+test("must be invoked with 'new'", () => {
+    class A {
+        constructor() {}
+    }
+
+    expect(() => {
+        A();
+    }).toThrowWithMessage(TypeError, "Class constructor A must be called with 'new'");
+
+    expect(() => {
+        A.prototype.constructor();
+    }).toThrowWithMessage(TypeError, "Class constructor A must be called with 'new'");
+});
+
+test("implicit constructor", () => {
+    class A {}
+
+    expect(new A()).toBeInstanceOf(A);
+});
+
+test("can call constructor without parentheses", () => {
+    class A {}
+
+    // prettier-ignore
+    expect(new A).toBeInstanceOf(A);
+});