OZG-5400 update funktion getRealmRepresentation

ozgcloud-keycloak-operator/src/main/java/de/ozgcloud/operator/keycloak/KeycloakGenericRemoteService.java

@@ -35,7 +35,12 @@ public class KeycloakGenericRemoteService {
 	}
 
 	public Optional<RealmRepresentation> getRealmRepresentation(String realmName) {
+		if (realmExists(realmName)) {
 			return Optional.of(keycloak.realm(realmName).toRepresentation());
+		} else {
+			return Optional.empty();
+		}
+
 	}
 
 	public Optional<RoleRepresentation> getClientRole(String roleName, String realClientId, String realm) {

ozgcloud-keycloak-operator/src/test/java/de/ozgcloud/operator/keycloak/KeycloakGenericRemoteServiceTest.java

@@ -198,13 +198,28 @@ class KeycloakGenericRemoteServiceTest {
 
 		@BeforeEach
 		void init() {
+			when(keycloak.realms()).thenReturn(realmsResource);
+		}
+
+		@Test
+		void shouldGetRealmFromKeycloakWhenExist() {
 			when(keycloak.realm(REALM)).thenReturn(realmResource);
+			when(service.realmExists(REALM)).thenReturn(true);
 			when(realmResource.toRepresentation()).thenReturn(realmRepresentation);
+
+			var realm = service.getRealmRepresentation(REALM);
+
+			assertThat(realm).isNotEmpty().contains(realmRepresentation);
 		}
 
 		@Test
-		void shouldGetClientFromKeycloak() {
-			assertThat(Optional.of(keycloak.realm(REALM).toRepresentation())).isNotEmpty().contains(realmRepresentation);
+		void shouldNotGetRealmFromKeycloakWhenNotExist() {
+
+			when(service.realmExists(REALM)).thenReturn(false);
+
+			var realm = service.getRealmRepresentation(REALM);
+
+			assertTrue(realm.isEmpty());
 		}
 	}
 }