import head from '../head';

describe('head() tests', ():void => {
	it('checks if head([5,6,7] returns 5', ():void => {
		expect(head([5,6,7])).toBe(5);
	})
	it(`head(["Hello", "Lighthouse", "Labs"] returns "Hello"` , ():void => {
		expect(head(["Hello", "Lighthouse", "Labs"])).toBe("Hello");
	})
	it(`head([]) returns null`, ():void => {
		expect(head([])).toBe(null);
	})
})