Prevent Application / CommandLineRunner classes from executing during JUnit testing

Question

If in your TestCase class there is this annotations:

@SpringApplicationConfiguration(classes = {Application.class})

this will cause the

Answer 1

You can define a test configuration in the same package as your application that looks exactly the same, except that it excludes beans implementing CommandLineRunner. The key here is @ComponentScan.excludeFilters:

@Configuration
@ComponentScan(excludeFilters = @ComponentScan.Filter(type = FilterType.ASSIGNABLE_TYPE, value = CommandLineRunner.class))
@EnableAutoConfiguration
public class TestApplicationConfiguration {
}

Then, just replace the configuration on your test:

@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(classes = TestApplicationConfiguration.class)
public class SomeApplicationTest {
    ...
}

No CommandLineRunner will be executed now, because they are not part of the configuration.