BeforeEach example

describe('App', () => {
    let a;

    beforeEach(() => {
      //We set or reset a here;
      a = 'Apple';
    });

    it('should be an Apple ', () => {
      expect(a).toEqual('Apple');
      // We change the value
      a = 'Pear'; 
    });
    
    it('should not be a Pear ', () => {
      //But it's still an Apple since we reset it in beforeEach
      expect(a).toEqual('Apple');
    });
});