React-testing-library: Cannot read property 'subscribe' of undefined when upgrading to react-redux:6.0.0

[albert-olive]

Hi,

I have a CI to upgrade dependencies and I'm having this error in my tests when trying to upgrade to react-redux to v6.0.0

TypeError: Cannot read property 'subscribe' of undefined
> 20 |     const { container } = render(mockComponent(Step1, { initialProps }));
         |                         ^

It's something related to this library or I have to open bug in reac-redux github?

Thanks

[Gpx]

To me, it looks related to your component. What does mockComponent render?

My guess is that your component expects some sort of context that you need to provide.

[albert-olive]

Yes, now I see that it's also breaking all my project. I'm gonna try to fix it.

[Gpx]

My guess is that you have to do the render this way:

render(
  <Provider store={store}>
    <MyComponent />
  </Provider>
)