Coverage Summary for Class: TestVirtualRouter (debug.com.greybox.projectmesh.testing)

 package com.greybox.projectmesh.testing
 
 import com.ustadmobile.meshrabiya.vnet.Protocol
 import com.ustadmobile.meshrabiya.vnet.VirtualPacket
 import com.ustadmobile.meshrabiya.vnet.VirtualRouter
 import com.ustadmobile.meshrabiya.vnet.socket.ChainSocketNextHop
 import java.net.DatagramPacket
 import java.net.InetAddress
 
 /**
  * Test implementation of a VirtualRouter for use with test devices.
  *
  * Provides dummy routing behavior and predictable network parameters for testing purposes.
  */
 class TestVirtualRouter : VirtualRouter {
 
     /** Fixed test device address */
     override val address: InetAddress = InetAddress.getByName(TestDeviceService.TEST_DEVICE_IP)
 
     /** Fixed port for local datagram operations */
     override val localDatagramPort: Int = 4242
 
     /** Fixed network prefix length for testing */
     override val networkPrefixLength: Int = 16
 
     /**
      * Route a packet.
      *
      * No-op implementation for test purposes.
      */
     override fun route(
         packet: VirtualPacket,
         datagramPacket: DatagramPacket?,
         virtualNodeDatagramSocket: com.ustadmobile.meshrabiya.vnet.VirtualNodeDatagramSocket?
     ) {
         // no-op for test implementation
     }
 
     /**
      * Allocate a UDP port or throw exception if unavailable.
      *
      * Always returns the requested port number in the test implementation.
      */
     override fun allocateUdpPortOrThrow(
         virtualDatagramSocketImpl: com.ustadmobile.meshrabiya.vnet.datagram.VirtualDatagramSocketImpl,
         portNum: Int
     ): Int {
         return portNum
     }
 
     /**
      * Deallocate a port.
      *
      * No-op implementation for test purposes.
      */
     override fun deallocatePort(protocol: Protocol, portNum: Int) {
         // no-op for test implementation
     }
 
     /**
      * Look up the next hop for a chain socket.
      *
      * Returns a dummy next hop with isFinalDest = true for testing.
      */
     override fun lookupNextHopForChainSocket(address: InetAddress, port: Int): ChainSocketNextHop {
         return ChainSocketNextHop(
             address = address,
             port = port,
             isFinalDest = true,
             network = null // network is null for test purposes
         )
     }
 
     /** Returns a constant MMCP message ID for testing */
     override fun nextMmcpMessageId(): Int = 1
 }