Service-Abhängigkeiten in Controller-Tests mit MockBean nachstellen

import org.junit.jupiter.api.Test;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.mock.mockito.MockBean;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.mockito.Mockito.when;
 
@SpringBootTest
public class OrderServiceTest {
 
    @MockBean
    private PaymentGateway paymentGateway;
 
    @Test
    void testSuccessfulPayment() {
        when(paymentGateway.processPayment(100.0)).thenReturn(true);
        boolean result = paymentGateway.processPayment(100.0);
        assertEquals(true, result);
    }
}