import {isNullOrUndefined} from '../src/util';


describe('util', () => {
  describe('isNullOrUndefined', () => {
    it('should return true if the value is null', async() => {
      const value = null;
      expect(isNullOrUndefined(value)).toBeTruthy()
    });

    it('should return true if the value is undefined', async() => {
      const value = undefined;
      expect(isNullOrUndefined(value)).toBeTruthy()
    });

    it('should return false if the value is defined', async() => {
      const value = 'montezuma';
      expect(isNullOrUndefined(value)).toBeFalsy()
    });
  })
})