Libraries: Move to Userland/Libraries/

Userland/Libraries/LibJS/Tests/exponentiation-basic.js

@@ -0,0 +1,37 @@
+test("regular exponentiation", () => {
+    expect(2 ** 0).toBe(1);
+    expect(2 ** 1).toBe(2);
+    expect(2 ** 2).toBe(4);
+    expect(2 ** 3).toBe(8);
+    expect(3 ** 2).toBe(9);
+    expect(0 ** 0).toBe(1);
+    expect(2 ** (3 ** 2)).toBe(512);
+    expect(2 ** (3 ** 2)).toBe(512);
+    expect((2 ** 3) ** 2).toBe(64);
+});
+
+test("exponentiation with negatives", () => {
+    expect(2 ** -3).toBe(0.125);
+    expect((-2) ** 3).toBe(-8);
+
+    // FIXME: This should fail :)
+    // expect("-2 ** 3").not.toEval();
+});
+
+test("exponentiation with non-numeric primitives", () => {
+    expect("2" ** "3").toBe(8);
+    expect("" ** []).toBe(1);
+    expect([] ** null).toBe(1);
+    expect(null ** null).toBe(1);
+    expect(undefined ** null).toBe(1);
+});
+
+test("exponentiation that produces NaN", () => {
+    expect(NaN ** 2).toBeNaN();
+    expect(2 ** NaN).toBeNaN();
+    expect(undefined ** 2).toBeNaN();
+    expect(2 ** undefined).toBeNaN();
+    expect(null ** undefined).toBeNaN();
+    expect(2 ** "foo").toBeNaN();
+    expect("foo" ** 2).toBeNaN();
+});