Override properties in application.yml with external file in integration test in Spring Boot application

In application.yml I have a list of custom configuration for caching.

caches:
  - name: cache1
    ttl: 30
  - name: cache2
    ttl: 60

I have an integration test and I want to override the values specified in application.yaml from external file.

I have several external cache configuration file for different tests, test-caches-1.yml, test-caches-2.yml, etc. The contents of file look simple

caches:
  - name: test-cache1
    ttl: 30
  - name: test-cache2
    ttl: 60

Here is my test

@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.MOCK)
@ContextConfiguration(classes = MyApplication.class)
@RunWith(SpringRunner.class)
@ActiveProfiles("test")
@TestPropertySource(
        properties = { "features.distributed-cache = true" },
        locations = {"classpath:/caches-configuratilon/test-caches.yml"})
public class CachingConfigurationTest {
    @Autowired
    CachesConfigurationProperties cachesConfigurationProperties;    

    @Test
    public void myTest() {
        // ...
    }
}

If I remove locations = {"classpath:/caches-configuratilon/test-caches.yml"} attribute during test execution I see all caches from application.yml. If I put the contents of test-caches.yml to application-test.yml I see caches configured there.

But when I put those caches to test-caches.yml there is nothing. Any ideas how can I override a values from application.yml with a values from external file test-caches.yml?