How to mock ResourceBundle.getString()?

Question

I\'m failing to mock ResourceBundle.getString().

This is my code:

ResourceBundle schemaBundle = Mockito.mock(ResourceBundle.class);
Mockito.         


        

Answer 1

Instead of mocking you can create a dummy ResourceBundle implementation, and then pass it in .thenReturn(resourceBundle):

    import java.util.ResourceBundle;

    ResourceBundle dummyResourceBundle = new ResourceBundle() {
        @Override
        protected Object handleGetObject(String key) {
            return "fake_translated_value";
        }

        @Override
        public Enumeration getKeys() {
            return Collections.emptyEnumeration();
        }
    };

    // Example usage
    when(request.getResourceBundle(any(Locale.class))).thenReturn(dummyResourceBundle)

If you need the actual keys and values, then you'll need to provide an implementation for getKeys(), e.g. a hashmap for storage and key lookup.