componentDidUpdate()

in test.js [131:138]


            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(24);
              componentDidUpdateCalled = true;
            },