test('shows the title of the diagram', () => {
// create a store to test with
const store = createStore()
// the title of the diagram
const title = 'test title'
// set the title of the store
store.dispatch(setDiagramTitle(title))
// render the component
const wrapper = mount(
<Provider store={store}>
<Title />
</Provider>
)
// make sure there is a title element with the correct text
expect(wrapper.containsMatchingElement(<h1>{title}</h1>)).toBeTruthy()
})
onChange={({ target }) => dispatch(setDiagramTitle(target.value))}