Fix tests for Spring Boot 4 and test config

build.gradle

@@ -26,6 +26,8 @@ dependencies {
     implementation 'org.springdoc:springdoc-openapi-starter-webmvc-ui:2.6.0'
 
     testImplementation 'org.springframework.boot:spring-boot-starter-test'
+    testImplementation 'org.springframework.boot:spring-boot-test'
+    testImplementation 'org.springframework.boot:spring-boot-test-autoconfigure'
 }
 
 tasks.named('test') {

src/test/java/de/dev089/eventproducer/EventProducerApplicationTests.java

@@ -3,7 +3,12 @@ package de.dev089.eventproducer;
 import org.junit.jupiter.api.Test;
 import org.springframework.boot.test.context.SpringBootTest;
 
-@SpringBootTest
+@SpringBootTest(properties = {
+        "RABBITMQ_HOST=localhost",
+        "RABBITMQ_PORT=5672",
+        "RABBITMQ_USERNAME=guest",
+        "RABBITMQ_PASSWORD=guest"
+})
 class EventProducerApplicationTests {
 
     @Test

src/test/java/de/dev089/eventproducer/web/RequestProducerControllerIT.java

@@ -1,13 +1,18 @@
 package de.dev089.eventproducer.web;
 
 import de.dev089.eventproducer.producer.HealthRequestProducer;
+import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
 import org.springframework.boot.test.context.SpringBootTest;
-import org.springframework.boot.test.mock.mockito.MockBean;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Primary;
+import org.springframework.boot.test.context.TestConfiguration;
 import org.springframework.http.MediaType;
 import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.setup.MockMvcBuilders;
+import org.springframework.web.context.WebApplicationContext;
 
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.verify;
@@ -20,14 +25,29 @@ import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.
         "RABBITMQ_USERNAME=guest",
         "RABBITMQ_PASSWORD=guest"
 })
-@AutoConfigureMockMvc
 class RequestProducerControllerIT {
 
     @Autowired
+    private WebApplicationContext context;
+
+    @Autowired
+    private HealthRequestProducer healthRequestProducer;
+
     private MockMvc mockMvc;
 
-    @MockBean
-    private HealthRequestProducer healthRequestProducer;
+    @BeforeEach
+    void setUp() {
+        this.mockMvc = MockMvcBuilders.webAppContextSetup(context).build();
+    }
+
+    @TestConfiguration
+    static class TestConfig {
+        @Bean
+        @Primary
+        HealthRequestProducer healthRequestProducer() {
+            return Mockito.mock(HealthRequestProducer.class);
+        }
+    }
 
     @Test
     void postPopulate_acceptsValidRequest() throws Exception {