test("basic functionality", () => { expect(Math.asin).toHaveLength(1); expect(Math.asin(0)).toBe(0); expect(Math.asin(null)).toBe(0); expect(Math.asin("")).toBe(0); expect(Math.asin([])).toBe(0); expect(Math.asin(1)).toBeCloseTo(1.5707963267948966); expect(Math.asin(-1)).toBeCloseTo(-1.5707963267948966); expect(Math.asin()).toBeNaN(); expect(Math.asin(undefined)).toBeNaN(); expect(Math.asin([1, 2, 3])).toBeNaN(); expect(Math.asin({})).toBeNaN(); expect(Math.asin("foo")).toBeNaN(); expect(Math.asin(NaN)).toBe(NaN); expect(Math.asin(-0.0)).toBe(-0.0); expect(Math.asin(1.1)).toBe(NaN); expect(Math.asin(-1.1)).toBe(NaN); });