90 lines
3.2 KiB
C++
90 lines
3.2 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright (c) 2007 University of Washington
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation;
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "ns3/test.h"
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#include "ns3/drop-tail-queue.h"
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#include "ns3/uinteger.h"
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namespace ns3 {
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class DropTailQueueTestCase : public TestCase
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{
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public:
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DropTailQueueTestCase ();
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virtual void DoRun (void);
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};
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DropTailQueueTestCase::DropTailQueueTestCase ()
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: TestCase ("Sanity check on the drop tail queue implementation")
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{}
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void
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DropTailQueueTestCase::DoRun (void)
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{
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Ptr<DropTailQueue> queue = CreateObject<DropTailQueue> ();
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NS_TEST_EXPECT_MSG_EQ (queue->SetAttributeFailSafe ("MaxPackets", UintegerValue (3)), true,
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"Verify that we can actually set the attribute");
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Ptr<Packet> p1, p2, p3, p4;
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p1 = Create<Packet> ();
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p2 = Create<Packet> ();
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p3 = Create<Packet> ();
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p4 = Create<Packet> ();
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NS_TEST_EXPECT_MSG_EQ (queue->GetNPackets (), 0, "There should be no packets in there");
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queue->Enqueue (p1);
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NS_TEST_EXPECT_MSG_EQ (queue->GetNPackets (), 1, "There should be one packet in there");
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queue->Enqueue (p2);
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NS_TEST_EXPECT_MSG_EQ (queue->GetNPackets (), 2, "There should be two packets in there");
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queue->Enqueue (p3);
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NS_TEST_EXPECT_MSG_EQ (queue->GetNPackets (), 3, "There should be three packets in there");
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queue->Enqueue (p4); // will be dropped
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NS_TEST_EXPECT_MSG_EQ (queue->GetNPackets (), 3, "There should be still three packets in there");
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Ptr<Packet> p;
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p = queue->Dequeue ();
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NS_TEST_EXPECT_MSG_EQ ((p != 0), true, "I want to remove the first packet");
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NS_TEST_EXPECT_MSG_EQ (queue->GetNPackets (), 2, "There should be two packets in there");
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NS_TEST_EXPECT_MSG_EQ (p->GetUid (), p1->GetUid (), "was this the first packet ?");
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p = queue->Dequeue ();
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NS_TEST_EXPECT_MSG_EQ ((p != 0), true, "I want to remove the second packet");
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NS_TEST_EXPECT_MSG_EQ (queue->GetNPackets (), 1, "There should be one packet in there");
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NS_TEST_EXPECT_MSG_EQ (p->GetUid (), p2->GetUid (), "Was this the second packet ?");
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p = queue->Dequeue ();
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NS_TEST_EXPECT_MSG_EQ ((p != 0), true, "I want to remove the third packet");
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NS_TEST_EXPECT_MSG_EQ (queue->GetNPackets (), 0, "There should be no packets in there");
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NS_TEST_EXPECT_MSG_EQ (p->GetUid (), p3->GetUid (), "Was this the third packet ?");
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p = queue->Dequeue ();
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NS_TEST_EXPECT_MSG_EQ ((p == 0), true, "There are really no packets in there");
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}
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static class DropTailQueueTestSuite : public TestSuite
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{
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public:
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DropTailQueueTestSuite ()
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: TestSuite ("drop-tail-queue", UNIT)
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{
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AddTestCase (new DropTailQueueTestCase ());
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}
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} g_dropTailQueueTestSuite;
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} // namespace ns3
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