How to pass context down to the Enzyme mount method to test component which includes Material UI component?

Question

I am trying to use mount from Enzyme to test my component in which a several Material UI component are nested. I get this error when running the test:

<

Answer 1

this is my handy method to test Material UI with shallow and mount

...
import MuiThemeProvider from 'material-ui/styles/MuiThemeProvider'
import getMuiTheme from 'material-ui/styles/getMuiTheme';

const muiTheme = getMuiTheme();
const shallowWithContext = (node) => shallow(node, {context: {muiTheme}, childContextTypes: {muiTheme: PropTypes.object}});

const mountWithContext = (node) => mount(
  node, {context: {muiTheme}, childContextTypes: {muiTheme: PropTypes.object}}
);


// now you can do
const wrapper = shallowWithContext(<Login auth={auth} onChange={() => 'test'} />);

Answer 2

Try adding childContextTypes in the mount options:

return mount(
  <SearchBar {...props} />, {
    context: {muiTheme},
    childContextTypes: {muiTheme: React.PropTypes.object}
  }
);

By doing it you set the Enzyme wrapper to make the muiTheme available to it's children through the context.