fix: added test for topic caching service

pom.xml

@@ -33,7 +33,6 @@
     <commons-lang3.version>3.11</commons-lang3.version>
     <liquibase-maven-plugin.version>4.23.2</liquibase-maven-plugin.version>
     <h2.version>1.4.200</h2.version>
-    <powermock-module-junit4.version>2.0.9</powermock-module-junit4.version>
     <ehcache.version>2.10.6</ehcache.version>
     <easy-random-core.version>5.0.0</easy-random-core.version>
     <spring-boot-autoconfigure.version>3.0.6</spring-boot-autoconfigure.version>

src/test/java/de/caritas/cob/agencyservice/api/service/TopicCachingServiceTest.java

@@ -0,0 +1,58 @@
+package de.caritas.cob.agencyservice.api.service;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.Mockito.when;
+
+import com.google.common.collect.Lists;
+
+import de.caritas.cob.agencyservice.AgencyServiceApplication;
+import de.caritas.cob.agencyservice.api.service.securityheader.SecurityHeaderSupplier;
+import de.caritas.cob.agencyservice.config.apiclient.TopicServiceApiControllerFactory;
+
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+import de.caritas.cob.agencyservice.topicservice.generated.web.model.TopicDTO;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.jdbc.AutoConfigureTestDatabase;
+import org.springframework.boot.test.autoconfigure.jdbc.AutoConfigureTestDatabase.Replace;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.mock.mockito.MockBean;
+import org.springframework.http.HttpHeaders;
+import org.springframework.test.context.TestPropertySource;
+
+
+@SpringBootTest(classes = AgencyServiceApplication.class)
+@TestPropertySource(properties = "spring.profiles.active=testing")
+@AutoConfigureTestDatabase(replace = Replace.ANY)
+class TopicCachingServiceTest {
+
+  @MockBean
+  TopicServiceApiControllerFactory topicServiceApiControllerFactory;
+
+  @MockBean SecurityHeaderSupplier securityHeaderSupplier;
+
+  @MockBean TenantHeaderSupplier tenantHeaderSupplier;
+
+  @MockBean
+  de.caritas.cob.agencyservice.topicservice.generated.web.TopicControllerApi topicControllerApi;
+
+  @Autowired
+  TopicCachingService topicCachingService;
+
+  @Test
+  void getAllTopics_Should_CallTopicControllerApiToGetTopics_AndCacheResponsePerTenant() {
+    // given
+    when(securityHeaderSupplier.getKeycloakAndCsrfHttpHeaders()).thenReturn(new HttpHeaders());
+    when(topicServiceApiControllerFactory.createControllerApi()).thenReturn(topicControllerApi);
+    var expectedTopics = Lists.newArrayList(new TopicDTO(), new TopicDTO());
+    when(topicControllerApi.getAllTopics()).thenReturn(expectedTopics);
+
+    // when
+    var actualTopics = topicCachingService.getAllTopics(1L);
+    topicCachingService.getAllTopics(1L);
+
+    // then
+    assertEquals(expectedTopics, actualTopics);
+    Mockito.verify(topicControllerApi, Mockito.times(1)).getAllTopics();
+  }
+}