diff --git a/test/isl-mock-channel-test-suite.cc b/test/isl-mock-channel-test-suite.cc
index 3fb3ba2..b172d07 100644
--- a/test/isl-mock-channel-test-suite.cc
+++ b/test/isl-mock-channel-test-suite.cc
@@ -14,84 +14,58 @@ using namespace ns3;
 class IslMockChannelTransmitUnknownTestCase : public TestCase
 {
 public:
-  IslMockChannelTransmitUnknownTestCase ();
-  virtual ~IslMockChannelTransmitUnknownTestCase ();
-
+  IslMockChannelTransmitUnknownTestCase () : TestCase ("transmission to broadcast address succeeds") {}
+  virtual ~IslMockChannelTransmitUnknownTestCase () {}
 private:
-  virtual void DoRun (void);
+  virtual void DoRun (void)
+  {
+    Ptr<IslMockChannel> channel = CreateObject<IslMockChannel> ();
+    Packet *packet = new Packet ();
+    Ptr<Packet> p = Ptr<Packet>(packet);
+    Ptr<MockNetDevice> dev = CreateObject<MockNetDevice> ();
+    dev->SetAddress (Mac48Address::Allocate ());
+    int32_t srcId = channel->Attach (dev);
+    Address destAddr = Mac48Address::GetBroadcast ();
+    Time txTime;
+    bool result = channel->TransmitStart (p, srcId, destAddr, txTime);
+
+    NS_TEST_ASSERT_MSG_EQ (result, true, "broadcast address does not transmit");
+  }
 };
 
-IslMockChannelTransmitUnknownTestCase::IslMockChannelTransmitUnknownTestCase ()
-  : TestCase ("Test transmission to broadcast address")
-{
-}
-
-IslMockChannelTransmitUnknownTestCase::~IslMockChannelTransmitUnknownTestCase ()
-{
-}
-
-void
-IslMockChannelTransmitUnknownTestCase::DoRun (void)
-{
-  Ptr<IslMockChannel> channel = CreateObject<IslMockChannel> ();
-  Packet *packet = new Packet ();
-  Ptr<Packet> p = Ptr<Packet>(packet);
-  Ptr<MockNetDevice> dev = CreateObject<MockNetDevice> ();
-  dev->SetAddress (Mac48Address::Allocate ());
-  int32_t srcId = channel->Attach (dev);
-  Address destAddr = Mac48Address::GetBroadcast ();
-  Time txTime;
-  bool result = channel->TransmitStart (p, srcId, destAddr, txTime);
-
-  NS_TEST_ASSERT_MSG_EQ (result, true, "Broadcast address delivers to all");
-}
-
 class IslMockChannelTransmitKnownTestCase : public TestCase
 {
 public:
-  IslMockChannelTransmitKnownTestCase ();
-  virtual ~IslMockChannelTransmitKnownTestCase ();
-
+  IslMockChannelTransmitKnownTestCase () : TestCase ("transmission to known destination succeeds") {}
+  virtual ~IslMockChannelTransmitKnownTestCase () {}
 private:
-  virtual void DoRun (void);
+  virtual void DoRun (void)
+  {
+    Ptr<IslMockChannel> channel = CreateObject<IslMockChannel> ();
+
+    Packet *packet = new Packet ();
+    Ptr<Packet> p = Ptr<Packet>(packet);
+
+    Ptr<Node> srcNode = CreateObject<Node> ();
+    Ptr<MockNetDevice> srcDev = CreateObject<MockNetDevice> ();
+    srcDev->SetNode (srcNode);
+    srcDev->SetAddress (Mac48Address::Allocate ());
+    int32_t srcId = channel->Attach (srcDev);
+
+    Ptr<Node> dstNode = CreateObject<Node> ();
+    Ptr<MockNetDevice> dstDev = CreateObject<MockNetDevice> ();
+    dstDev->SetNode (dstNode);
+    dstDev->SetAddress (Mac48Address::Allocate ());
+    channel->Attach (dstDev);
+
+    Address destAddr = dstDev->GetAddress ();
+    Time txTime;
+    bool result = channel->TransmitStart (p, srcId, destAddr, txTime);
+
+    NS_TEST_ASSERT_MSG_EQ (result, true, "known destination did not deliver");
+  }
 };
 
-IslMockChannelTransmitKnownTestCase::IslMockChannelTransmitKnownTestCase ()
-  : TestCase ("Test transmission to known destination")
-{
-}
-
-IslMockChannelTransmitKnownTestCase::~IslMockChannelTransmitKnownTestCase ()
-{
-}
-
-void
-IslMockChannelTransmitKnownTestCase::DoRun (void)
-{
-  Ptr<IslMockChannel> channel = CreateObject<IslMockChannel> ();
-
-  Packet *packet = new Packet ();
-  Ptr<Packet> p = Ptr<Packet>(packet);
-
-  Ptr<Node> srcNode = CreateObject<Node> ();
-  Ptr<MockNetDevice> srcDev = CreateObject<MockNetDevice> ();
-  srcDev->SetNode (srcNode);
-  srcDev->SetAddress (Mac48Address::Allocate ());
-  int32_t srcId = channel->Attach (srcDev);
-
-  Ptr<Node> dstNode = CreateObject<Node> ();
-  Ptr<MockNetDevice> dstDev = CreateObject<MockNetDevice> ();
-  dstDev->SetNode (dstNode);
-  dstDev->SetAddress (Mac48Address::Allocate ());
-  channel->Attach (dstDev);
-
-  Address destAddr = dstDev->GetAddress ();
-  Time txTime;
-  bool result = channel->TransmitStart (p, srcId, destAddr, txTime);
-
-  NS_TEST_ASSERT_MSG_EQ (result, true, "Known destination delivers");
-}
-
 class IslMockChannelTestSuite : public TestSuite
 {
 public:
@@ -104,6 +78,7 @@ IslMockChannelTestSuite::IslMockChannelTestSuite ()
   // TestDuration for TestCase can be QUICK, EXTENSIVE or TAKES_FOREVER
   AddTestCase (new IslMockChannelTransmitUnknownTestCase, TestCase::QUICK);
   AddTestCase (new IslMockChannelTransmitKnownTestCase, TestCase::QUICK);
+  // TODO more test
 }
 
 // Do not forget to allocate an instance of this TestSuite