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nikitapandya avatar nikitapandya commented on June 16, 2024
This is how I wrote unit tests for testing the <Translate /> component. Using redux and typescript: 

//component file 

class MyModal extends React.Component<MyModal> {
    constructor(props: MyModal) {
        super(props);
    }

    public render() {
       return (
          <p><Translate id=Modal.title.text/></p>
       );
    }

//Unit test file 

export default function renderWithRedux(
    ui: any,
    { store = createStore(reducers, initialState) } = {}
) {
    let component: any = (
        <Provider store={store}>
            <LocalizeProvider store={store}>
                {ui}
            </LocalizeProvider>
        </Provider>);
    return {
        ...render(component),
        store,
    }
}

    test('Testing English Translations', () => {
        //this is a store that can never be changed
        const store = createStore(() => ({
            ...initialState,
            localize: {
                languages: [
                    { name: 'English', code: 'en', active: true },
                    { name: 'Français', code: 'fr', active: false },
                ],
                options: { renderToStaticMarkup, defaultLanguage: 'en', onMissingTranslation() { return "MISSING TRANSLATION" } },
                translations: {
                    "Modal.title.text": ['example Modal title', "example Modal title FR"],
                }
            }
        }))
        const { getByText } = renderWithRedux(<MyModal  {...defaultProps} />, {
            store,
        })

        expect(getByText('example Modal title')).toBeInTheDocument();
    });

from react-localize-redux.

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