Spring Boot MongoDB Repository null during unit test

Question

I have been at this for a while but can't figure it out. The repo injects fine when running the app normal, but when trying to do a spring boot unit test it never injects. Here is the code:

 package com.g2p.g2prestservice.repositories; import com.g2p.g2prestservice.model.User; import org.springframework.data.mongodb.repository.MongoRepository; public interface UserRepository extends MongoRepository<User, Integer> { } 

 package com.g2p.g2prestservice.repositories; import com.g2p.g2prestservice.model.User; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.test.context.junit4.SpringRunner; import org.testng.annotations.Test; import static org.testng.Assert.assertEquals; @RunWith(SpringRunner.class) @SpringBootTest public class UserRepositoryTest { @Autowired UserRepository userRepository; @Test public void testInsertUser() { User user = new User("fake@email.com", "fakePassword"); userRepository.save(user); assertEquals(userRepository.count(), 1); } } 

I am essentially trying to follow this guide as example: https://springframework.guru/configuring-spring-boot-for-mongo/

Thank you all for solving what I am sure is a very elementary mistake.

EDIT: I THINK the problem is that the spring context isn't launching when I run the test class...

EDIT: Here is launcher class:

 package com.g2p.g2prestservice; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.data.mongodb.repository.config.EnableMongoRepositories; @SpringBootApplication public class G2pRestServiceApplication { public static void main(String[] args) { SpringApplication.run(G2pRestServiceApplication.class, args); } } 

Answer 1

try this

@SpringBootTest(classes= {Application.class})

where Application.class is where you wrote you SpringApplication.run code.

public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }