Unit tests without gradle version change

DAIRemoteApp/app/src/main/java/com/example/dairemote_app/SocketManager.java

@@ -16,7 +16,7 @@ public class SocketManager {
     int socketPort;
     public byte[] data = new byte[200];
     public DatagramPacket packet = new DatagramPacket(GetData(), GetData().length);
-    private DatagramSocket socket;
+    public DatagramSocket socket;
 
     SocketManager(InetAddress address, int port) {
         SetSocket();

DAIRemoteApp/app/src/test/java/com/example/dairemote_app/SocketManagerTest.java

@@ -0,0 +1,56 @@
+package com.example.dairemote_app;
+import static org.junit.jupiter.api.Assertions.*;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.net.DatagramPacket;
+import java.net.DatagramSocket;
+import java.net.InetAddress;
+import java.net.UnknownHostException;
+class SocketManagerTest {
+
+    SocketManager socketManager;
+    DatagramPacket packet;
+
+    @BeforeEach
+    void setUp() throws UnknownHostException {
+        socketManager = new SocketManager(InetAddress.getByName("127.0.0.1"), 9999);
+    }
+    @Test
+    void testSetSocket() {
+        socketManager.SetSocket();
+        assertNotNull(socketManager.GetSocket(), "Socket should be created");
+    }
+
+    @Test
+    void testGetSocket() {
+        DatagramSocket socket = socketManager.GetSocket();
+        assertNotNull(socket, "Socket should not be null");
+    }
+
+    @Test
+    void closeSocket() {
+        socketManager.CloseSocket();
+        assertTrue(socketManager.socket.isClosed(), "Testing SocketManager CloseSocket(), expecting null");
+    }
+
+    @Test
+    void testGetData() {
+        assertNotNull(socketManager.GetData(), "Data array should not be null");
+    }
+
+    @Test
+    void testSetPacket() {
+        byte[] data = new byte[100];
+        DatagramPacket packet = new DatagramPacket(data, data.length);
+        socketManager.SetPacket(packet);
+        assertSame(packet, socketManager.GetPacket(), "Packet should be set correctly");
+    }
+
+    @Test
+    void testGetPacket() {
+        DatagramPacket packet = socketManager.GetPacket();
+        assertNotNull(packet, "Packet should not be null");
+    }
+}