[FIXED] Can not run Junit in eclipse

Issue

I am trying to run spring boot crud example with following code

@SpringBootTest @RunWith(MockitoJUnitRunner.class)

public class CreateUserServiceTest {

@Mock
private UserRepository userRepository;

@InjectMocks
private CreateUserService createUserService;

@Test
public void whenSaveUser_shouldReturnUser() {
    User user = new User();
    user.setName("Test Name");

    when(userRepository.save(ArgumentMatchers.any(User.class))).thenReturn(user);

    User created = createUserService.createNewUser(user);

    assertThat(created.getName()).isSameAs(user.getName());
    verify(userRepository).save(user);
}

}

But after run it gives bellow error.

"NO test found with test runner 'junit5'"

anyone please help me.

Please check the error message from this file.

Solution

Edit: I found the root cause.

JUnit 5 uses annotations from a different package than JUnit 4. When you start a test, Eclipse automatically creates a launch configuration for JUnit 5, but if your annotations are not in the new package, Eclipse would not find the tests and will display the error message.

New annotations:

import static org.junit.jupiter.api.Assertions.assertEquals;
import org.junit.jupiter.api.Test;
// ... other imports from org.junit.jupiter.api

Old annotations:

import org.junit.Test;
// ... imports without "jupiter" in their name

You need to add the following dependencies in a Maven project in order to use JUnit 5:

<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <scope>test</scope>
</dependency>
<dependency>
    <groupId>org.junit.jupiter</groupId>
    <artifactId>junit-jupiter-api</artifactId>
    <scope>test</scope>
</dependency>
<dependency>
    <groupId>org.junit.jupiter</groupId>
    <artifactId>junit-jupiter-params</artifactId>
    <scope>test</scope>
</dependency>

Workaround: Use JUnit 4. You need to select JUnit 4 in your launch configuration. Otherwise this error is shown.

From the main menu select Run -> Run configurations, then select your JUnit test configuration from the navigation bar on the left hand side.

Answered By - roccobaroccoSC