Final Test with instance()

EditDatasource.spec.js

import React from 'react';
import { render, mount, shallow } from 'enzyme';
import EditDatasource from './EditDatasource';
import { MemoryRouter } from 'react-router-dom';

describe('tests for EditDatasource', function () {
  it.only('changes the datasource.type when a select button is clicked', function () {
      const wrap = mount(
          <MemoryRouter>
              <EditDatasource
                  notify={notify}
                  navigate={navigate}
                  action={actionSetup()} />
          </MemoryRouter>
      );

      expect(wrap.find(EditDatasource).instance().state.datasource.type === 'datawarehouse').to.be.true;

      wrap.find('.manualUpload').simulate('click');

      expect(wrap.find(EditDatasource).instance().state.datasource.type === 'manual').to.be.true;
  });
});