Jest Enzyme test a React component that returns null in render method
Solution 1:
ShallowWrapper has a isEmptyRender() function:
expect(comp.isEmptyRender()).toBe(true)
Solution 2:
expect(comp.type()).toEqual(null)
That's it!
or:
expect(comp.get(0)).toBeFalsy()
Solution 3:
According to ShallowWrapper::html implementation
it returns null if component instance type is null, as a result of render.
expect(comp.html()).toBeNull();
Solution 4:
we use the following with jest-enzyme
expect(comp).toBeEmptyRender()