OZG-6223 OZG-7381 Test for getFileSize

alfa-service/src/main/java/de/ozgcloud/alfa/attachment/AttachmentByVorgangController.java

@@ -43,6 +43,7 @@ import de.ozgcloud.alfa.common.file.OzgFile;
 import de.ozgcloud.alfa.common.file.OzgFileService;
 import de.ozgcloud.alfa.common.zipdownload.ZipDownloadService;
 import de.ozgcloud.alfa.vorgang.VorgangController;
+import de.ozgcloud.common.errorhandling.TechnicalException;
 import lombok.RequiredArgsConstructor;
 
 @RestController
@@ -85,7 +86,7 @@ public class AttachmentByVorgangController {
 		try {
 			return Files.size(file.toPath());
 		} catch (IOException e) {
-			throw new RuntimeException(e);
+			throw new TechnicalException("Error getting file size", e);
 		}
 	}
 }

alfa-service/src/test/java/de/ozgcloud/alfa/attachment/AttachmentByVorgangControllerTest.java

@@ -30,7 +30,10 @@ import static org.springframework.test.web.servlet.request.MockMvcRequestBuilder
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
 
 import java.io.File;
+import java.io.IOException;
 import java.io.OutputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
 import java.util.List;
 import java.util.Random;
 import java.util.UUID;
@@ -43,6 +46,7 @@ import org.junit.jupiter.api.Test;
 import org.mockito.ArgumentMatchers;
 import org.mockito.InjectMocks;
 import org.mockito.Mock;
+import org.mockito.MockedStatic;
 import org.mockito.Spy;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.MediaType;
@@ -61,6 +65,7 @@ import de.ozgcloud.alfa.vorgang.VorgangController;
 import de.ozgcloud.alfa.vorgang.VorgangHeaderTestFactory;
 import de.ozgcloud.alfa.vorgang.VorgangWithEingang;
 import de.ozgcloud.alfa.vorgang.VorgangWithEingangTestFactory;
+import de.ozgcloud.common.errorhandling.TechnicalException;
 import lombok.SneakyThrows;
 
 class AttachmentByVorgangControllerTest {
@@ -250,4 +255,43 @@ class AttachmentByVorgangControllerTest {
 			controller.createZipFile(VorgangHeaderTestFactory.ID);
 		}
 	}
+
+	@Nested
+	class TestGetFileSize {
+
+		private final Path path = Path.of("/some/dummy/path/dummy-archive.zip");
+
+		@Test
+		void shouldCallFilesSize() {
+			try (MockedStatic<Files> mocked = mockStatic(Files.class)) {
+				controller.getFileSize(path.toFile());
+
+				mocked.verify(() -> Files.size(path));
+			}
+		}
+
+		@Test
+		void shouldReturnResultFileSize() {
+			var expectedFileSize = new Random().nextLong();
+			try (MockedStatic<Files> mocked = mockStatic(Files.class)) {
+				mocked.when(() -> Files.size(any())).thenReturn(expectedFileSize);
+
+				var fileSize = controller.getFileSize(path.toFile());
+
+				assertThat(fileSize).isEqualTo(expectedFileSize);
+			}
+		}
+
+		@Test
+		void shouldThrowTechnicalException() {
+			try (MockedStatic<Files> mocked = mockStatic(Files.class)) {
+				mocked.when(() -> Files.size(any())).thenThrow(new IOException());
+
+				assertThatThrownBy(() -> controller.getFileSize(path.toFile()))
+						.isInstanceOf(TechnicalException.class)
+						.hasMessageStartingWith("Error getting file size")
+						.hasCauseInstanceOf(IOException.class);
+			}
+		}
+	}
 }