ladybird/Userland/Libraries/LibJS/Tests/builtins/Math/Math.cos.js
davidot da8715a07c LibJS: Add extreme value tests for cos and sin
These sometimes produce different NaN patterns which can mess up the
value encoding.
2022-08-15 17:11:25 +02:00

16 lines
536 B
JavaScript

test("basic functionality", () => {
expect(Math.cos).toHaveLength(1);
expect(Math.cos(0)).toBe(1);
expect(Math.cos(null)).toBe(1);
expect(Math.cos("")).toBe(1);
expect(Math.cos([])).toBe(1);
expect(Math.cos(Math.PI)).toBe(-1);
expect(Math.cos()).toBeNaN();
expect(Math.cos(undefined)).toBeNaN();
expect(Math.cos([1, 2, 3])).toBeNaN();
expect(Math.cos({})).toBeNaN();
expect(Math.cos("foo")).toBeNaN();
expect(Math.cos(-Infinity)).toBeNaN();
expect(Math.cos(Infinity)).toBeNaN();
});