Cannot apply when mocking spring repository delete with Mockito [duplicate]

Question

I googled all I could think of for solutions, but phrasing is difficult.

I have a unit test that calls delete on a Spring Repository. The repo is defined as:

public interface FileConfigurationRepository extends CasenetRepository<FileConfiguration, String> {}

The method I'm testing has the following call:

    fileConfigurationRepository.delete(GlobalConfiguration.CUSTOM_LOGO_ID);

Where GlobalConfiguration.CUSTOM_LOGO_ID is defined as:

public static final String CUSTOM_LOGO_ID = "customLogoId";

So I wrote my mock as follows:

  Mockito.when(fileConfigurationRepository.delete(GlobalConfiguration.CUSTOM_LOGO_ID)).thenThrow(new Exception());

But then I get the following error:

The text of the error:

No instance(s) of type variable(s) T exist so that void conforms to T

Unsure how to proceed.

Answer 1

As indicated, the issue was really about the return being void and not about the parameter type being passed. According to How to make mock to void methods with Mockito, I changed the code as follows:

    Mockito.doThrow(new RuntimeException()).when(fileConfigurationRepository).delete(GlobalConfiguration.CUSTOM_LOGO_ID);

And that fixed the problem.