Spring boot tests - Can't find test properties

Question

I have a spring boot project and it works great. I now want to write tests for my application and I am running into some configuration headaches.

Spring boot created a test class for me called ApplicationTests. It's real simple and it looks like this:

@RunWith(SpringRunner.class)
@SpringBootTest
public class DuurzaamApplicationTests {
    @Test
    public void contextLoads() {
    }    
}

Now when I start the tests I get this error:

java.lang.IllegalArgumentException: Could not resolve placeholder 'company.upload' in value "${company.upload}"

I have a properties.yml file in the src/test/resources directory and for some reason it isn't loaded. I have tried all different kind of annotations from examples on the Internet and yet none of them work.

How can I tell spring boot tests to use an application.yml file to load the properties from?

Answer 1

We can use @TestPropertySource or @PropertySource to load the properties file.

Example:

@RunWith(SpringRunner.class)
@SpringBootTest
@TestPropertySource("classpath:properties.yml")
@ActiveProfiles("test")
public class DuurzaamApplicationTests {
    @Test
    public void contextLoads() {
    }    
}

Docs: https://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/test/context/TestPropertySource.html