diff --git a/ozgcloud-common-lib/src/test/java/de/ozgcloud/common/binaryfile/GrpcBinaryFileServerDownloaderTest.java b/ozgcloud-common-lib/src/test/java/de/ozgcloud/common/binaryfile/GrpcBinaryFileServerDownloaderTest.java
index e2f860ec13170e5bca5718f34f73f1b57105b142..ba9b67ab7e44121f7cccda3268c737fa91c9d14c 100644
--- a/ozgcloud-common-lib/src/test/java/de/ozgcloud/common/binaryfile/GrpcBinaryFileServerDownloaderTest.java
+++ b/ozgcloud-common-lib/src/test/java/de/ozgcloud/common/binaryfile/GrpcBinaryFileServerDownloaderTest.java
@@ -27,7 +27,6 @@ import static org.assertj.core.api.Assertions.*;
 import static org.mockito.ArgumentMatchers.*;
 import static org.mockito.Mockito.*;
 
-import java.io.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
@@ -40,7 +39,6 @@ import java.util.function.Consumer;
 import java.util.function.Function;
 import java.util.stream.Stream;
 
-import org.junit.jupiter.api.AfterEach;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Nested;
 import org.junit.jupiter.api.Test;
@@ -486,7 +484,7 @@ class GrpcBinaryFileServerDownloaderTest {
 		@ParameterizedTest
 		@MethodSource("provideArguments")
 		void shouldReturnValue(boolean requestFinished, boolean ready, boolean expected) {
-			ReflectionTestUtils.setField(downloader, "requestFinished", new AtomicBoolean(requestFinished));
+			setRequestFinishedField(requestFinished);
 			lenient().when(callObserver.isReady()).thenReturn(ready);
 
 			var canSendChunks = downloader.canSendChunks();
@@ -635,72 +633,6 @@ class GrpcBinaryFileServerDownloaderTest {
 		return (TechnicalException) ReflectionTestUtils.getField(downloader, "downloadError", AtomicReference.class).get();
 	}
 
-	private void setDownloadFinishedField(boolean downloadFinished) {
-		ReflectionTestUtils.setField(downloader, "downloadFinished", new AtomicBoolean(downloadFinished));
-	}
-
-	private boolean getDownloadFinished() {
-		return ReflectionTestUtils.getField(downloader, "downloadFinished", AtomicBoolean.class).get();
-	}
-
 	private static class GrpcResponseDummy {
 	}
-
-	@Nested
-	class TestStreams {
-
-		private static final int CHUNK_SIZE = 255 * 1024;
-
-		private PipedInputStream inputStream;
-		private PipedOutputStream outputStream;
-
-		@SneakyThrows
-		@BeforeEach
-		void init() {
-			outputStream = new PipedOutputStream();
-			inputStream = new PipedInputStream(CHUNK_SIZE);
-			outputStream.connect(inputStream);
-		}
-
-		@SneakyThrows
-		@Test
-		void shouldReadIncompleteFile() {
-			var fileBuffer = new byte[CHUNK_SIZE];
-			var readBuffer = new byte[CHUNK_SIZE];
-			try (FileInputStream fileInputStream = new FileInputStream("/Users/kwitukiewicz/Documents/books/__Debt__The_First_5_000_Years.pdf")) {
-				fileInputStream.read(fileBuffer, 0, 255);
-				outputStream.write(fileBuffer, 0, 1);
-
-				var read = inputStream.read(readBuffer, 0, CHUNK_SIZE);
-
-				assertThat(read).isEqualTo(1);
-			}
-		}
-
-		@SneakyThrows
-		@Test
-		void shouldReadAfterOutputStreamWasClosed() {
-			var fileBuffer = new byte[CHUNK_SIZE];
-			var readBuffer = new byte[CHUNK_SIZE * 2];
-			try (FileInputStream fileInputStream = new FileInputStream("/Users/kwitukiewicz/Documents/books/__Debt__The_First_5_000_Years.pdf")) {
-				fileInputStream.read(fileBuffer, 0, fileBuffer.length);
-				outputStream.write(fileBuffer);
-				outputStream.close();
-
-				var read = inputStream.read(readBuffer);
-
-				assertThat(read).isEqualTo(CHUNK_SIZE);
-
-				read = inputStream.read(readBuffer);
-				assertThat(read).isEqualTo(-1);
-			}
-		}
-
-		@SneakyThrows
-		@AfterEach
-		void cleanup() {
-			outputStream.close();
-			inputStream.close();
-		}
-	}
 }
\ No newline at end of file