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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
* Copyright (C) 2014 Named Data Networking Project
* See COPYING for copyright and distribution information.
*/
#include "table/fib.hpp"
#include "../face/dummy-face.hpp"
#include <boost/test/unit_test.hpp>
namespace nfd {
BOOST_AUTO_TEST_SUITE(TableFib)
BOOST_AUTO_TEST_CASE(Entry)
{
Name prefix("ndn:/pxWhfFza");
shared_ptr<Face> face1 = make_shared<DummyFace>();
shared_ptr<Face> face2 = make_shared<DummyFace>();
fib::Entry entry(prefix);
BOOST_CHECK(entry.getPrefix().equals(prefix));
const fib::NextHopList& nexthops1 = entry.getNextHops();
// []
BOOST_CHECK_EQUAL(nexthops1.size(), 0);
entry.addNextHop(face1, 20);
const fib::NextHopList& nexthops2 = entry.getNextHops();
// [(face1,20)]
BOOST_CHECK_EQUAL(nexthops2.size(), 1);
BOOST_CHECK_EQUAL(nexthops2.begin()->getFace(), face1);
BOOST_CHECK_EQUAL(nexthops2.begin()->getCost(), 20);
entry.addNextHop(face1, 30);
const fib::NextHopList& nexthops3 = entry.getNextHops();
// [(face1,30)]
BOOST_CHECK_EQUAL(nexthops3.size(), 1);
BOOST_CHECK_EQUAL(nexthops3.begin()->getFace(), face1);
BOOST_CHECK_EQUAL(nexthops3.begin()->getCost(), 30);
entry.addNextHop(face2, 40);
const fib::NextHopList& nexthops4 = entry.getNextHops();
// [(face1,30), (face2,40)]
BOOST_CHECK_EQUAL(nexthops4.size(), 2);
int i = -1;
for (fib::NextHopList::const_iterator it = nexthops4.begin();
it != nexthops4.end(); ++it) {
++i;
switch (i) {
case 0 :
BOOST_CHECK_EQUAL(it->getFace(), face1);
BOOST_CHECK_EQUAL(it->getCost(), 30);
break;
case 1 :
BOOST_CHECK_EQUAL(it->getFace(), face2);
BOOST_CHECK_EQUAL(it->getCost(), 40);
break;
}
}
entry.addNextHop(face2, 10);
const fib::NextHopList& nexthops5 = entry.getNextHops();
// [(face2,10), (face1,30)]
BOOST_CHECK_EQUAL(nexthops5.size(), 2);
i = -1;
for (fib::NextHopList::const_iterator it = nexthops5.begin();
it != nexthops5.end(); ++it) {
++i;
switch (i) {
case 0 :
BOOST_CHECK_EQUAL(it->getFace(), face2);
BOOST_CHECK_EQUAL(it->getCost(), 10);
break;
case 1 :
BOOST_CHECK_EQUAL(it->getFace(), face1);
BOOST_CHECK_EQUAL(it->getCost(), 30);
break;
}
}
entry.removeNextHop(face1);
const fib::NextHopList& nexthops6 = entry.getNextHops();
// [(face2,10)]
BOOST_CHECK_EQUAL(nexthops6.size(), 1);
BOOST_CHECK_EQUAL(nexthops6.begin()->getFace(), face2);
BOOST_CHECK_EQUAL(nexthops6.begin()->getCost(), 10);
entry.removeNextHop(face1);
const fib::NextHopList& nexthops7 = entry.getNextHops();
// [(face2,10)]
BOOST_CHECK_EQUAL(nexthops7.size(), 1);
BOOST_CHECK_EQUAL(nexthops7.begin()->getFace(), face2);
BOOST_CHECK_EQUAL(nexthops7.begin()->getCost(), 10);
entry.removeNextHop(face2);
const fib::NextHopList& nexthops8 = entry.getNextHops();
// []
BOOST_CHECK_EQUAL(nexthops8.size(), 0);
entry.removeNextHop(face2);
const fib::NextHopList& nexthops9 = entry.getNextHops();
// []
BOOST_CHECK_EQUAL(nexthops9.size(), 0);
}
BOOST_AUTO_TEST_CASE(Insert_LongestPrefixMatch)
{
Name nameEmpty;
Name nameA ("ndn:/A");
Name nameAB ("ndn:/A/B");
Name nameABC ("ndn:/A/B/C");
Name nameABCD("ndn:/A/B/C/D");
Name nameE ("ndn:/E");
std::pair<shared_ptr<fib::Entry>, bool> insertRes;
shared_ptr<fib::Entry> entry;
Fib fib;
// ['/']
entry = fib.findLongestPrefixMatch(nameA);
BOOST_CHECK_NE(entry.get(), static_cast<fib::Entry*>(0));
BOOST_CHECK(entry->getPrefix().equals(nameEmpty));
insertRes = fib.insert(nameA);
BOOST_CHECK_EQUAL(insertRes.second, true);
BOOST_CHECK(insertRes.first->getPrefix().equals(nameA));
// ['/', '/A']
insertRes = fib.insert(nameA);
BOOST_CHECK_EQUAL(insertRes.second, false);
BOOST_CHECK(insertRes.first->getPrefix().equals(nameA));
// ['/', '/A']
entry = fib.findLongestPrefixMatch(nameA);
BOOST_CHECK_NE(entry.get(), static_cast<fib::Entry*>(0));
BOOST_CHECK(entry->getPrefix().equals(nameA));
entry = fib.findLongestPrefixMatch(nameABCD);
BOOST_CHECK_NE(entry.get(), static_cast<fib::Entry*>(0));
BOOST_CHECK(entry->getPrefix().equals(nameA));
insertRes = fib.insert(nameABC);
BOOST_CHECK_EQUAL(insertRes.second, true);
BOOST_CHECK(insertRes.first->getPrefix().equals(nameABC));
// ['/', '/A', '/A/B/C']
entry = fib.findLongestPrefixMatch(nameA);
BOOST_CHECK_NE(entry.get(), static_cast<fib::Entry*>(0));
BOOST_CHECK(entry->getPrefix().equals(nameA));
entry = fib.findLongestPrefixMatch(nameAB);
BOOST_CHECK_NE(entry.get(), static_cast<fib::Entry*>(0));
BOOST_CHECK(entry->getPrefix().equals(nameA));
entry = fib.findLongestPrefixMatch(nameABCD);
BOOST_CHECK_NE(entry.get(), static_cast<fib::Entry*>(0));
BOOST_CHECK(entry->getPrefix().equals(nameABC));
entry = fib.findLongestPrefixMatch(nameE);
BOOST_CHECK_NE(entry.get(), static_cast<fib::Entry*>(0));
BOOST_CHECK(entry->getPrefix().equals(nameEmpty));
}
BOOST_AUTO_TEST_CASE(RemoveNextHopFromAllEntries)
{
shared_ptr<Face> face1 = make_shared<DummyFace>();
shared_ptr<Face> face2 = make_shared<DummyFace>();
Name nameA("ndn:/A");
Name nameB("ndn:/B");
std::pair<shared_ptr<fib::Entry>, bool> insertRes;
shared_ptr<fib::Entry> entry;
Fib fib;
// {'/':[]}
insertRes = fib.insert(nameA);
insertRes.first->addNextHop(face1, 0);
insertRes.first->addNextHop(face2, 0);
// {'/':[], '/A':[1,2]}
insertRes = fib.insert(nameB);
insertRes.first->addNextHop(face1, 0);
// {'/':[], '/A':[1,2], '/B':[1]}
fib.removeNextHopFromAllEntries(face1);
// {'/':[], '/A':[2], '/B':[]}
entry = fib.findLongestPrefixMatch(nameA);
BOOST_CHECK(entry->getPrefix().equals(nameA));
const fib::NextHopList& nexthopsA = entry->getNextHops();
BOOST_CHECK_EQUAL(nexthopsA.size(), 1);
BOOST_CHECK_EQUAL(nexthopsA.begin()->getFace(), face2);
entry = fib.findLongestPrefixMatch(nameB);
BOOST_CHECK(entry->getPrefix().equals(nameB));
const fib::NextHopList& nexthopsB = entry->getNextHops();
BOOST_CHECK_EQUAL(nexthopsB.size(), 0);
}
void
validateFindExactMatch(const Fib& fib, const Name& target)
{
shared_ptr<fib::Entry> entry = fib.findExactMatch(target);
if (static_cast<bool>(entry))
{
BOOST_CHECK_EQUAL(entry->getPrefix(), target);
}
else
{
BOOST_FAIL("No entry found for " << target);
}
}
void
validateNoExactMatch(const Fib& fib, const Name& target)
{
shared_ptr<fib::Entry> entry = fib.findExactMatch(target);
if (static_cast<bool>(entry))
{
BOOST_FAIL("Found unexpected entry for " << target);
}
}
BOOST_AUTO_TEST_CASE(FindExactMatch)
{
Fib fib;
fib.insert("/A");
fib.insert("/A/B");
fib.insert("/A/B/C");
validateFindExactMatch(fib, "/A");
validateFindExactMatch(fib, "/A/B");
validateFindExactMatch(fib, "/A/B/C");
validateFindExactMatch(fib, "/");
validateNoExactMatch(fib, "/does/not/exist");
Fib gapFib;
fib.insert("/X");
fib.insert("/X/Y/Z");
validateNoExactMatch(gapFib, "/X/Y");
Fib emptyFib;
validateNoExactMatch(emptyFib, "/nothing/here");
}
void
validateRemove(Fib& fib, const Name& target)
{
fib.remove(target);
shared_ptr<fib::Entry> entry = fib.findExactMatch(target);
if (static_cast<bool>(entry))
{
BOOST_FAIL("Found \"removed\" entry for " << target);
}
}
BOOST_AUTO_TEST_CASE(Remove)
{
Fib emptyFib;
emptyFib.remove("/does/not/exist"); // crash test
validateRemove(emptyFib, "/");
emptyFib.remove("/still/does/not/exist"); // crash test
Fib fib;
fib.insert("/A");
fib.insert("/A/B");
fib.insert("/A/B/C");
// check if we remove the right thing and leave
// everything else alone
validateRemove(fib, "/A/B");
validateFindExactMatch(fib, "/A");
validateFindExactMatch(fib, "/A/B/C");
validateFindExactMatch(fib, "/");
validateRemove(fib, "/A/B/C");
validateFindExactMatch(fib, "/A");
validateFindExactMatch(fib, "/");
validateRemove(fib, "/A");
validateFindExactMatch(fib, "/");
Fib gapFib;
gapFib.insert("/X");
gapFib.insert("/X/Y/Z");
gapFib.remove("/X/Y"); //should do nothing
validateFindExactMatch(gapFib, "/X");
validateFindExactMatch(gapFib, "/X/Y/Z");
}
BOOST_AUTO_TEST_SUITE_END()
} // namespace nfd