OZG-6162 OZG-7060 Fix test

alfa-service/src/test/java/de/ozgcloud/alfa/export/ExportRemoteServiceTest.java

@@ -5,12 +5,14 @@ import static org.mockito.Mockito.*;
 
 import java.util.Iterator;
 
+import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Nested;
 import org.junit.jupiter.api.Test;
 import org.mockito.ArgumentMatcher;
 import org.mockito.InjectMocks;
 import org.mockito.Mock;
+import org.mockito.MockedStatic;
 import org.mockito.Spy;
 
 import de.ozgcloud.alfa.vorgang.VorgangHeaderTestFactory;
@@ -35,12 +37,20 @@ class ExportRemoteServiceTest {
 
 		@Mock
 		private Iterator<GrpcExportVorgangResponse> responseIterator;
+		private MockedStatic<StreamedExportedVorgangFile> mockedStaticExportedFile;
 
 		@BeforeEach
 		void init() {
+			mockedStaticExportedFile = mockStatic(StreamedExportedVorgangFile.class);
+			mockedStaticExportedFile.when(() -> StreamedExportedVorgangFile.getFileNameFrom(responseIterator)).thenReturn(GrpcFileTestFactory.FILE_NAME);
 			when(exportServiceStub.exportVorgang(any(GrpcExportVorgangRequest.class))).thenReturn(responseIterator);
 		}
 
+		@AfterEach
+		void cleanup() {
+			mockedStaticExportedFile.close();
+		}
+
 		@Test
 		void shouldExportVorgang() {
 			service.exportVorgang(VORGANG_ID);