Spring ComponentScan excludeFilters annotation not working in Spring Boot Test context

Question

I am using Spring Boot 1.4.3.RELEASE and want to exclude some components from being scanned when running the tests.

@RunWith(SpringRunner.class)
@SpringBootTest
@ComponentScan(
        basePackages = {"com.foobar"},
        excludeFilters =  @Filter(type = FilterType.ASSIGNABLE_TYPE, classes = {AmazonKinesisRecordChecker.class, MyAmazonCredentials.class}))
public class ApplicationTests {

    @Test
    public void contextLoads() {
    }

}

Despite the filters, when I run the test the unwanted components are loaded and Spring Boot crashes as those classes require an AWS environment to work properly:

2017-01-25 16:02:49.234 ERROR 10514 --- [           main] o.s.boot.SpringApplication               : Application startup failed

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'amazonKinesisRecordChecker' defined in file 

Question: how can I make the filters working?

Answer 1

What you need is, not to exclude them but to mock them instead, using @MockBean. As shown below

@RunWith(SpringRunner.class)
@SpringBootTest
public class ApplicationTests {
    @MockBean
    AmazonCredentials amazonCredentials;

    @Test
    public void contextLoads() {
    }
}

This way you will let Spring Context know that you want to mock the AmazonCredentials bean. Sometimes, excluding filters is a bit tricky to work with.

Hope this helps! I would love to explore if we have another way to get this done.