How to get values from test.properties or application-test.properties

Question

I'm trying to get value either from a test.properties or application-test.properties. My goal is to get some value from testprofile key, and then activate profiles from the values I read.

RunWith(SpringJUnit4ClassRunner.class)
@ActiveProfiles("test")
@SpringBootTest(classes = CustomActiveProfilesResolver.class)
@TestPropertySource(locations = "classpath:application-test.properties")
@EnableConfigurationProperties
@Configuration
public class CustomActiveProfilesResolver implements ActiveProfilesResolver
{
  
    @Value("${testprofile}")
    private String testprofile;

    @Override
    public String[] resolve(final Class<?> aClass)
    {
        System.out.println("profile" + testprofile);
        String[] profileFound;

        Pattern laPatternSeparVirgule = Pattern.compile("[,]");

        if (testprofile == null)
        {

            throw new ProgrammationException(
                "You have to define profiles");
        }

        else
        {
            List<String> listeDeStrings = new ArrayList<>();

            String[] sousChaines = laPatternSeparVirgule.split(testprofile);

            for (String chaine : sousChaines)
            {
                listeDeStrings.add(chaine);
                System.out.println(chaine);
            }

            profileFound = new String[listeDeStrings.size()];
            listeDeStrings.toArray(profileFound);

        }

        return profileFound;

    }

}

No matter what I do, I can't reach testprofile=batch,postgres,hibernate. I tried putting alternatively my application-test.properties in /src/main/resources and in /src/test/resources.

Could you please tell me what I've missed?