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.

Please paste the text of error, image is not visible behind firewall. — user3458
– user3458, Commented Jun 14, 2018 at 17:02
Exception is a checked exception. Unless your delete() method declares throws Exception, you can't throw it from there. Use RuntimeException — user3458
– user3458, Commented Jun 14, 2018 at 17:03
OK, then I need to see the text of the error. Image is filtered out :( — user3458
– user3458, Commented Jun 14, 2018 at 17:16

Thom · Accepted Answer · 2019-07-05 11:59:26Z

18

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.

edited Jul 5, 2019 at 11:59

answered Jun 14, 2018 at 17:29

Thom

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