Cannot read property 'prop' of undefined react-redux-jest - reactjs

Question

I have error with second test. What is wrong with them? I doing all by docs, but have error: "Cannot read property 'prop' of undefined". I tried with using Provider, but it doesn't help me, maybe i do something wrong?
Can i somehow debug it?
BoardContainer.test.js
import React from 'react'
import configureStore from 'redux-mock-store'
import ConnectedBoard,{Board} from './BoardContainer'
import { shallow, configure,mount} from 'enzyme'
import Adapter from 'enzyme-adapter-react-16';
import {Provider} from 'react-redux'
import PropTypes from 'prop-types';
configure({adapter: new Adapter()});
const boards = [{
id: 1,
title: 'first_board'
}, {
id: 2,
title: 'second_board',
}];
describe('>>>H O M E --- REACT-REDUX (Shallow + passing the {store} directly)',()=> {
const initialState = {boards: boards};
const mockStore = configureStore();
let store, wrapper;
beforeEach(()=>{
store = mockStore(initialState);
wrapper = shallow( <Provider store={store}><ConnectedBoard /></Provider> );
})
it('+++ render the connected(SMART) component', () => {
expect(wrapper.length).toEqual(1);
});
it('+++ check Prop matches with initialState', () => {
expect(wrapper.prop('boards')).toEqual(initialState.boards);
});
})
BoardContainer.js
import React, {Component} from 'react'
import {connect} from 'react-redux'
import {loadBoards} from '../../actions/boardJS'
import Board from '../../components/Board/Board'
export class BoardContainer extends Component {
getBoards() {
fetch(process.env.REACT_APP_DEV_API_URL + `todo_lists`)
.then(res => res.json())
.then(data => {
this.props.dispatch(loadBoards(data))
})
}
componentDidMount() {
this.getBoards()
}
render() {
return <Board/>
}
}
const mapStateToProps = state => {
return {
boards: state.boards
}
}
export default connect(mapStateToProps)(BoardContainer)
If someone know solution it would be nice :)

Answer 1

It looks like you are looking at the props of the Provider Component not the ConnectedBoard component.
I'd also be mindful of the below:
"When called on a shallow wrapper, .prop(key) will return values for props on the root node that the component renders, not the component itself." - https://airbnb.io/enzyme/docs/api/ShallowWrapper/prop.html
Can you elaborate a bit, you say that property 'prop' is missing, but that would mean that wrapper does not have a ShallowWrapper assigned. Which would mean beforeEach has not executed... I doubt that's the case if test 1 was successful.
Was the error infact that props itself is not defined? When you try to access the property 'boards'