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/Array/Array.isArray.js

@@ -0,0 +1,34 @@
+test("length is 1", () => {
+    expect(Array.isArray).toHaveLength(1);
+});
+
+test("arguments that evaluate to false", () => {
+    expect(Array.isArray()).toBeFalse();
+    expect(Array.isArray("1")).toBeFalse();
+    expect(Array.isArray("foo")).toBeFalse();
+    expect(Array.isArray(1)).toBeFalse();
+    expect(Array.isArray(1, 2, 3)).toBeFalse();
+    expect(Array.isArray(undefined)).toBeFalse();
+    expect(Array.isArray(null)).toBeFalse();
+    expect(Array.isArray(Infinity)).toBeFalse();
+    expect(Array.isArray({})).toBeFalse();
+});
+
+test("arguments that evaluate to true", () => {
+    expect(Array.isArray([])).toBeTrue();
+    expect(Array.isArray([1])).toBeTrue();
+    expect(Array.isArray([1, 2, 3])).toBeTrue();
+    expect(Array.isArray(new Array())).toBeTrue();
+    expect(Array.isArray(new Array(10))).toBeTrue();
+    expect(Array.isArray(new Array("a", "b", "c"))).toBeTrue();
+    expect(Array.isArray(Array.prototype)).toBeTrue();
+    expect(Array.isArray(new Proxy([], {}))).toBeTrue();
+});
+
+test("Revoked Proxy as argument throws", () => {
+    const revocable = Proxy.revocable([], {});
+    revocable.revoke();
+    expect(() => {
+        Array.isArray(revocable.proxy);
+    }).toThrowWithMessage(TypeError, "An operation was performed on a revoked Proxy object");
+});