diff --git a/src/test/java/mpo/dayon/common/network/TransferableFilesTest.java b/src/test/java/mpo/dayon/common/network/TransferableFilesTest.java
new file mode 100644
index 00000000..3d3cef87
--- /dev/null
+++ b/src/test/java/mpo/dayon/common/network/TransferableFilesTest.java
@@ -0,0 +1,74 @@
+package mpo.dayon.common.network;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.awt.datatransfer.DataFlavor;
+import java.awt.datatransfer.UnsupportedFlavorException;
+import java.io.ByteArrayInputStream;
+import java.io.File;
+import java.nio.charset.StandardCharsets;
+import java.util.*;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class TransferableFilesTest {
+
+    private TransferableFiles transferableFiles;
+    @BeforeEach
+    void setup() {
+        transferableFiles =  new TransferableFiles(new ArrayList<>());
+    }
+
+    @Test
+    void getTransferDataAsFileList() throws UnsupportedFlavorException {
+        final File file = new File(String.valueOf(UUID.randomUUID()));
+        transferableFiles = new TransferableFiles(Collections.singletonList(file));
+        final List<File> files = (List<File>) transferableFiles.getTransferData(DataFlavor.javaFileListFlavor);
+        assertEquals(file, files.get(0));
+    }
+
+    @Test
+    void getTransferDataAsUri() throws ClassNotFoundException, UnsupportedFlavorException {
+        final File file = new File(String.valueOf(UUID.randomUUID()));
+        transferableFiles = new TransferableFiles(Collections.singletonList(file));
+        final String uri = (String) transferableFiles.getTransferData(new DataFlavor("text/uri-list;class=java.lang.String"));
+        assertEquals("x-special/nautilus-clipboard", uri.substring(0, 28));
+        assertTrue(uri.contains(file.getName()));
+    }
+
+    @Test
+    void getTransferDataAsGnomeCopiedFiles() throws ClassNotFoundException, UnsupportedFlavorException {
+        final File file = new File(String.valueOf(UUID.randomUUID()));
+        transferableFiles = new TransferableFiles(Collections.singletonList(file));
+        final ByteArrayInputStream stream = (ByteArrayInputStream) transferableFiles.getTransferData(new DataFlavor("x-special/gnome-copied-files;class=java.io.InputStream"));
+        int len = stream.available();
+        byte[] bytes = new byte[len];
+        stream.read(bytes, 0, len);
+        String string = new String(bytes, StandardCharsets.UTF_8);
+        assertEquals("copy", string.substring(0, 4));
+        assertTrue(string.contains(file.getName()));
+    }
+
+    @Test
+    void getTransferDataAsStringShouldThrow() {
+        final File file = new File(String.valueOf(UUID.randomUUID()));
+        transferableFiles = new TransferableFiles(Collections.singletonList(file));
+        assertThrows(UnsupportedFlavorException.class, () -> transferableFiles.getTransferData(DataFlavor.stringFlavor));
+    }
+
+    @Test
+    void getTransferDataFlavors() {
+        final DataFlavor[] transferDataFlavors = transferableFiles.getTransferDataFlavors();
+        assertEquals(3, transferDataFlavors.length);
+    }
+
+    @Test
+    void isDataFlavorSupported() throws ClassNotFoundException {
+        assertTrue(transferableFiles.isDataFlavorSupported(DataFlavor.javaFileListFlavor));
+        assertTrue(transferableFiles.isDataFlavorSupported(new DataFlavor("text/uri-list;class=java.lang.String")));
+        assertTrue(transferableFiles.isDataFlavorSupported(new DataFlavor("x-special/gnome-copied-files;class=java.io.InputStream")));
+        assertFalse(transferableFiles.isDataFlavorSupported(DataFlavor.stringFlavor));
+        assertFalse(transferableFiles.isDataFlavorSupported(DataFlavor.imageFlavor));
+    }
+}
\ No newline at end of file
diff --git a/src/test/java/mpo/dayon/common/network/message/FileMetaDataTest.java b/src/test/java/mpo/dayon/common/network/message/FileMetaDataTest.java
new file mode 100644
index 00000000..7b29ede3
--- /dev/null
+++ b/src/test/java/mpo/dayon/common/network/message/FileMetaDataTest.java
@@ -0,0 +1,32 @@
+package mpo.dayon.common.network.message;
+
+import org.junit.jupiter.api.Test;
+
+import static java.lang.String.format;
+import static org.junit.jupiter.api.Assertions.*;
+
+class FileMetaDataTest {
+
+    private final String basePath = "tmp/";
+    private final String fileName = format("%sfoo/bar.txt", basePath);
+    private final long fileSize = 10;
+
+    @Test
+    void getFileName() {
+        // given
+        FileMetaData fileMetaData = new FileMetaData(fileName, fileSize, basePath);
+
+        // when then
+        assertEquals("foo/bar.txt", fileMetaData.getFileName());
+        assertEquals(fileSize, fileMetaData.getFileSize());
+    }
+
+    @Test
+    void equals() {
+        // given
+        FileMetaData fileMetaData = new FileMetaData(fileName, fileSize, basePath);
+
+        // when then
+        assertEquals(fileMetaData, new FileMetaData(fileName, fileSize, basePath));
+    }
+}