import * as utils from '../src/utils' test('isNullOrUndefined > returns true for null and undefined', () => { expect(utils.isNullOrUndefined(null)).toBeTruthy() expect(utils.isNullOrUndefined(undefined)).toBeTruthy() }) test('isNullOrUndefined > returns false for non null or undefined', () => { expect(utils.isNullOrUndefined('')).toBeFalsy() expect(utils.isNullOrUndefined(10)).toBeFalsy() })