OZG-3936 OZG-7793 Fix unit tests

alfa-service/src/main/java/de/ozgcloud/alfa/common/LinkedUserProfileResourceSerializer.java

@@ -37,19 +37,28 @@ import com.fasterxml.jackson.databind.JsonSerializer;
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.ser.ContextualSerializer;
 
+import de.ozgcloud.alfa.common.user.UserManagerProperties;
 import de.ozgcloud.alfa.common.user.UserManagerUrlProvider;
 import de.ozgcloud.common.errorhandling.TechnicalException;
-import lombok.RequiredArgsConstructor;
 
 @Component
-@RequiredArgsConstructor
 public class LinkedUserProfileResourceSerializer extends JsonSerializer<Object> implements ContextualSerializer {
 
 	private final UserManagerUrlProvider userManagerUrlProvider;
 
 	private LinkedUserProfileResource annotation;
 
-	static LinkedUserProfileResourceSerializer createForAnnotatedField(UserManagerUrlProvider userManagerUrlProvider, LinkedUserProfileResource annotation) {
+	// for usage outside of Spring
+	private LinkedUserProfileResourceSerializer() {
+		this.userManagerUrlProvider = new UserManagerUrlProvider(new UserManagerProperties());
+	}
+
+	public LinkedUserProfileResourceSerializer(UserManagerUrlProvider userManagerUrlProvider) {
+		this.userManagerUrlProvider = userManagerUrlProvider;
+	}
+
+	static LinkedUserProfileResourceSerializer createForAnnotatedField(UserManagerUrlProvider userManagerUrlProvider,
+			LinkedUserProfileResource annotation) {
 		var serializer = new LinkedUserProfileResourceSerializer(userManagerUrlProvider);
 		serializer.annotation = annotation;
 		return serializer;
@@ -57,7 +66,8 @@ public class LinkedUserProfileResourceSerializer extends JsonSerializer<Object>
 
 	@Override
 	public JsonSerializer<?> createContextual(SerializerProvider prov, BeanProperty property) {
-		return LinkedUserProfileResourceSerializer.createForAnnotatedField(userManagerUrlProvider, property.getAnnotation(LinkedUserProfileResource.class));
+		return LinkedUserProfileResourceSerializer.createForAnnotatedField(userManagerUrlProvider,
+				property.getAnnotation(LinkedUserProfileResource.class));
 	}
 
 	@Override

alfa-service/src/test/java/de/ozgcloud/alfa/common/LinkedUserProfileResourceSerializerTest.java

@@ -14,10 +14,12 @@ import org.mockito.Captor;
 import org.mockito.Mock;
 
 import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.SerializerProvider;
 
 import de.ozgcloud.alfa.common.user.UserId;
 import de.ozgcloud.alfa.common.user.UserManagerUrlProvider;
+import de.ozgcloud.alfa.common.user.UserProfileTestFactory;
 import lombok.SneakyThrows;
 
 class LinkedUserProfileResourceSerializerTest {
@@ -158,6 +160,20 @@ class LinkedUserProfileResourceSerializerTest {
 			}
 		}
 
+		@Nested
+		class OnCreatedImplicitlyByObjectMapper {
+
+			@SneakyThrows
+			@Test
+			void shouldSerializeToString() {
+				var objectMapper = new ObjectMapper();
+
+				var serialized = objectMapper.writeValueAsString(new LinkedUserProfileResourceTestObject(UserProfileTestFactory.ID));
+
+				assertThat(serialized).isEqualTo("{\"id\":\"" + UserProfileTestFactory.ID.toString() + "\"}");
+			}
+		}
+
 		@SneakyThrows
 		private void serializeSingleValue() {
 			serializer.serialize(USER_ID, generator, serializerProvider);