componentDidUpdate()

in test.js [185:192]


            componentDidUpdate(prevProps, prevState, snapshot) {
              expect(prevProps).toEqual({incrementBy: 2});
              expect(prevState).toEqual({count: 3});
              expect(this.props).toEqual({incrementBy: 3});
              expect(this.state).toEqual({count: 6});
              expect(snapshot).toBe('3');
              componentDidUpdateCalled = true;
            }