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import { renderHook, act } from '@testing-library/react-hooks';
import Cookies from 'js-cookie';
import { useCookie } from '../src';
const setup = (cookieName: string) => renderHook(() => useCookie(cookieName));
it('should have initial value of null if no cookie exists', () => {
const { result } = setup('some-cookie');
expect(result.current[0]).toBeNull();
});
it('should have initial value of the cookie if it exists', () => {
const cookieName = 'some-cookie';
const value = 'some-value';
Cookies.set(cookieName, value);
const { result } = setup(cookieName);
expect(result.current[0]).toBe(value);
// cleanup
Cookies.remove(cookieName);
});
it('should update the cookie on call to updateCookie', () => {
const spy = jest.spyOn(Cookies, 'set');
const cookieName = 'some-cookie';
const { result } = setup(cookieName);
const newValue = 'some-new-value';
act(() => {
result.current[1](newValue);
});
expect(result.current[0]).toBe(newValue);
expect(spy).toHaveBeenCalledTimes(1);
expect(spy).toHaveBeenCalledWith(cookieName, newValue, undefined);
// cleanup
spy.mockRestore();
Cookies.remove(cookieName);
});
it('should delete the cookie on call to deleteCookie', () => {
const cookieName = 'some-cookie';
const value = 'some-value';
Cookies.set(cookieName, value);
const spy = jest.spyOn(Cookies, 'remove');
const { result } = setup(cookieName);
expect(result.current[0]).toBe(value);
act(() => {
result.current[2]();
});
expect(result.current[0]).toBeNull();
expect(spy).toHaveBeenCalledTimes(1);
expect(spy).toHaveBeenLastCalledWith(cookieName);
// cleanup
spy.mockRestore();
Cookies.remove(cookieName);
});
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