How to test Spring @Conditional beans

Question

I have a @Conditional bean -

@RestController("/user")
@ConditionalOnProperty(prefix = "user-controller", name = "enabled", havingValue = "true")
public void UserController {

@GetMapping
public String greetings() {
  return "Hello User";
}

}

it can be either enabled or disabled. I want to create a test to cover both use cases. How can I do that? I just have one application.properties file:

user-controller.enabled=true

I can inject the property into bean and add a setter to manage it via code, but that solution is not elegant:

@RestController("/user")
@ConditionalOnProperty(prefix = "user-controller", name = "enabled", havingValue = "true")
public void UserController {

@Value("${user-controller.enabled}")
private boolean enabled;

public void setEnabled(boolean enabled) {
 this.enabled = enabled;
}

@GetMapping
public String greetings() {
  return enabled ? "Hello User" : "Endpoint is disabled";
}

}

smth like this

Answer 1

Assuming that you use SpringBoot 2 you might test like this:

public class UserControllerTest {

  private final ApplicationContextRunner runner = new ApplicationContextRunner()
      .withConfiguration(UserConfigurations.of(UserController.class));

  @Test
  public void testShouldBeDisabled() {
    runner.withPropertyValues("user-controller.enabled=false")
        .run(context -> assertThat(context).doesNotHaveBean("userController "));
  }
}