table: ContentStore based on skip list

ref: #1212

Change-Id: Iaa13aa7c110c3cd059438bf553a19b4fcd07e137
diff --git a/tests/fw/forwarder.cpp b/tests/fw/forwarder.cpp
index b9e460c..ecd06ac 100644
--- a/tests/fw/forwarder.cpp
+++ b/tests/fw/forwarder.cpp
@@ -6,6 +6,7 @@
 
 #include "fw/forwarder.hpp"
 #include "tests/face/dummy-face.hpp"
+#include <ndn-cpp-dev/security/key-chain.hpp>
 
 #include "tests/test-common.hpp"
 
@@ -23,7 +24,10 @@
   Name nameABC("ndn:/A/B/C");
   Interest interestAB(nameAB);
   interestAB.setInterestLifetime(4000);
-  Data dataABC(nameABC);
+  shared_ptr<Data> dataABC = make_shared<Data>(nameABC);
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+  dataABC->setSignature(fakeSignature);
 
   shared_ptr<DummyFace> face1 = make_shared<DummyFace>();
   shared_ptr<DummyFace> face2 = make_shared<DummyFace>();
@@ -45,7 +49,7 @@
   BOOST_CHECK(face2->m_sentInterests[0].getName().equals(nameAB));
   BOOST_CHECK_EQUAL(face2->m_sentInterests[0].getIncomingFaceId(), face1->getId());
 
-  face2->receiveData(dataABC);
+  face2->receiveData(*dataABC);
   g_io.run();
   g_io.reset();
   BOOST_REQUIRE_EQUAL(face1->m_sentDatas.size(), 1);
@@ -89,44 +93,62 @@
   forwarder.addFace(face1);
   forwarder.addFace(face2);
 
+  shared_ptr<Data> d1, d2, d3, d4;
+  shared_ptr<Interest> i1, i2, i3, i4;
+  
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+
   // local face, /localhost: OK
   forwarder.m_dispatchToStrategy_count = 0;
-  forwarder.onIncomingInterest(*face1, Interest("/localhost/A1"));
+  i1 = make_shared<Interest>(Name("/localhost/A1"));
+  forwarder.onIncomingInterest(*face1, *i1);
   BOOST_CHECK_EQUAL(forwarder.m_dispatchToStrategy_count, 1);
 
   // non-local face, /localhost: violate
   forwarder.m_dispatchToStrategy_count = 0;
-  forwarder.onIncomingInterest(*face2, Interest("/localhost/A2"));
+  i2 = make_shared<Interest>(Name("/localhost/A2"));
+  forwarder.onIncomingInterest(*face2, *i2);
   BOOST_CHECK_EQUAL(forwarder.m_dispatchToStrategy_count, 0);
 
   // local face, non-/localhost: OK
   forwarder.m_dispatchToStrategy_count = 0;
-  forwarder.onIncomingInterest(*face1, Interest("/A3"));
+  i3 = make_shared<Interest>(Name("/A3"));
+  forwarder.onIncomingInterest(*face1, *i3);
   BOOST_CHECK_EQUAL(forwarder.m_dispatchToStrategy_count, 1);
 
   // non-local face, non-/localhost: OK
   forwarder.m_dispatchToStrategy_count = 0;
-  forwarder.onIncomingInterest(*face2, Interest("/A4"));
+  i4 = make_shared<Interest>(Name("/A4"));
+  forwarder.onIncomingInterest(*face2, *i4);
   BOOST_CHECK_EQUAL(forwarder.m_dispatchToStrategy_count, 1);
 
   // local face, /localhost: OK
   forwarder.m_onDataUnsolicited_count = 0;
-  forwarder.onIncomingData(*face1, Data("/localhost/B1"));
+  d1 = make_shared<Data>(Name("/localhost/B1"));
+  d1->setSignature(fakeSignature);
+  forwarder.onIncomingData(*face1, *d1);
   BOOST_CHECK_EQUAL(forwarder.m_onDataUnsolicited_count, 1);
 
   // non-local face, /localhost: OK
   forwarder.m_onDataUnsolicited_count = 0;
-  forwarder.onIncomingData(*face2, Data("/localhost/B2"));
+  d2 = make_shared<Data>(Name("/localhost/B2"));
+  d2->setSignature(fakeSignature);
+  forwarder.onIncomingData(*face2, *d2);
   BOOST_CHECK_EQUAL(forwarder.m_onDataUnsolicited_count, 0);
 
   // local face, non-/localhost: OK
   forwarder.m_onDataUnsolicited_count = 0;
-  forwarder.onIncomingData(*face1, Data("/B3"));
+  d3 = make_shared<Data>(Name("/B3"));
+  d3->setSignature(fakeSignature);
+  forwarder.onIncomingData(*face1, *d3);
   BOOST_CHECK_EQUAL(forwarder.m_onDataUnsolicited_count, 1);
 
   // non-local face, non-/localhost: OK
   forwarder.m_onDataUnsolicited_count = 0;
-  forwarder.onIncomingData(*face2, Data("/B4"));
+  d4 = make_shared<Data>(Name("/B4"));
+  d4->setSignature(fakeSignature);
+  forwarder.onIncomingData(*face2, *d4);
   BOOST_CHECK_EQUAL(forwarder.m_onDataUnsolicited_count, 1);
 }
 
diff --git a/tests/table/cs.cpp b/tests/table/cs.cpp
index eeca6b5..cf0929c 100644
--- a/tests/table/cs.cpp
+++ b/tests/table/cs.cpp
@@ -2,28 +2,893 @@
 /**
  * Copyright (C) 2014 Named Data Networking Project
  * See COPYING for copyright and distribution information.
+ *
+ * Author: Ilya Moiseenko <iliamo@ucla.edu>
  */
 
 #include "table/cs.hpp"
+#include "table/cs-entry.hpp"
 
 #include "tests/test-common.hpp"
 
+#include <ndn-cpp-dev/security/key-chain.hpp>
+
 namespace nfd {
 namespace tests {
 
+class CsAccessor : public Cs
+{
+public:
+
+  bool
+  evictItem_accessor()
+  {
+    return evictItem();
+  }
+};
+
 BOOST_FIXTURE_TEST_SUITE(TableCs, BaseFixture)
 
-BOOST_AUTO_TEST_CASE(FakeInsertFind)
+BOOST_AUTO_TEST_CASE(Insertion)
 {
   Cs cs;
   
-  Data data;
-  BOOST_CHECK_EQUAL(cs.insert(data), false);
+  shared_ptr<Data> data = make_shared<Data>("/insertion");
   
-  Interest interest;
-  BOOST_CHECK_EQUAL(static_cast<bool>(cs.find(interest)), false);
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+  data->setSignature(fakeSignature);
+  
+  BOOST_CHECK_EQUAL(cs.insert(*data), true);
 }
 
+BOOST_AUTO_TEST_CASE(Insertion2)
+{
+  Cs cs;
+
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+  
+  shared_ptr<Data> data = make_shared<Data>("/a");
+  data->setSignature(fakeSignature);
+  cs.insert(*data);
+  
+  shared_ptr<Data> data2 = make_shared<Data>("/b");
+  data2->setSignature(fakeSignature);
+  cs.insert(*data2);
+ 
+  shared_ptr<Data> data3 = make_shared<Data>("/c");
+  data3->setSignature(fakeSignature);
+  cs.insert(*data3);
+  
+  shared_ptr<Data> data4 = make_shared<Data>("/d");
+  data4->setSignature(fakeSignature);
+  cs.insert(*data4);
+  
+  BOOST_CHECK_EQUAL(cs.size(), 4);
+}
+
+
+BOOST_AUTO_TEST_CASE(DuplicateInsertion)
+{
+  Cs cs;
+  
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+  
+  shared_ptr<Data> data0 = make_shared<Data>("/insert/smth");
+  data0->setSignature(fakeSignature);
+  BOOST_CHECK_EQUAL(cs.insert(*data0), true);
+  
+  shared_ptr<Data> data = make_shared<Data>("/insert/duplicate");
+  data->setSignature(fakeSignature);
+  BOOST_CHECK_EQUAL(cs.insert(*data), true);
+  
+  cs.insert(*data);
+  BOOST_CHECK_EQUAL(cs.size(), 2);
+}
+
+
+BOOST_AUTO_TEST_CASE(DuplicateInsertion2)
+{
+  Cs cs;
+  
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+  
+  shared_ptr<Data> data = make_shared<Data>("/insert/duplicate");
+  data->setSignature(fakeSignature);
+  BOOST_CHECK_EQUAL(cs.insert(*data), true);
+  
+  cs.insert(*data);
+  BOOST_CHECK_EQUAL(cs.size(), 1);
+  
+  shared_ptr<Data> data2 = make_shared<Data>("/insert/original");
+  data2->setSignature(fakeSignature);
+  BOOST_CHECK_EQUAL(cs.insert(*data2), true);
+  BOOST_CHECK_EQUAL(cs.size(), 2);
+}
+
+BOOST_AUTO_TEST_CASE(InsertAndFind)
+{
+  Cs cs;
+  
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+  
+  Name name("/insert/and/find");
+  
+  shared_ptr<Data> data = make_shared<Data>(name);
+  data->setSignature(fakeSignature);
+  BOOST_CHECK_EQUAL(cs.insert(*data), true);
+  
+  shared_ptr<Interest> interest = make_shared<Interest>(name);
+  
+  const Data* found = cs.find(*interest);
+  
+  BOOST_REQUIRE(found != 0);
+  BOOST_CHECK_EQUAL(data->getName(), found->getName());
+}
+
+BOOST_AUTO_TEST_CASE(InsertAndNotFind)
+{
+  Cs cs;
+  
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+  
+  Name name("/insert/and/find");
+  shared_ptr<Data> data = make_shared<Data>(name);
+  data->setSignature(fakeSignature);
+  BOOST_CHECK_EQUAL(cs.insert(*data), true);
+  
+  Name name2("/not/find");
+  shared_ptr<Interest> interest = make_shared<Interest>(name2);
+  
+  const Data* found = cs.find(*interest);
+  
+  BOOST_CHECK_EQUAL(found, static_cast<const Data*>(0));
+}
+
+
+BOOST_AUTO_TEST_CASE(InsertAndErase)
+{
+  CsAccessor cs;
+  
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+  
+  shared_ptr<Data> data = make_shared<Data>("/insertandelete");
+  data->setSignature(fakeSignature);
+  cs.insert(*data);
+  BOOST_CHECK_EQUAL(cs.size(), 1);
+  
+  cs.evictItem_accessor();
+  BOOST_CHECK_EQUAL(cs.size(), 0);
+}
+
+BOOST_AUTO_TEST_CASE(StalenessQueue)
+{
+  CsAccessor cs;
+  
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+  
+  Name name2("/insert/fresh");
+  shared_ptr<Data> data2 = make_shared<Data>(name2);
+  data2->setFreshnessPeriod(5000);
+  data2->setSignature(fakeSignature);
+  cs.insert(*data2);
+  
+  Name name("/insert/expire");
+  shared_ptr<Data> data = make_shared<Data>(name);
+  data->setFreshnessPeriod(500);
+  data->setSignature(fakeSignature);
+  cs.insert(*data);
+  
+  BOOST_CHECK_EQUAL(cs.size(), 2);
+  
+  sleep(1);
+  
+  cs.evictItem_accessor();
+  BOOST_CHECK_EQUAL(cs.size(), 1);
+  
+  shared_ptr<Interest> interest = make_shared<Interest>(name2);
+  const Data* found = cs.find(*interest);
+  BOOST_REQUIRE(found != 0);
+  BOOST_CHECK_EQUAL(found->getName(), name2);
+}
+
+//even max size
+BOOST_AUTO_TEST_CASE(ReplacementEvenSize)
+{
+  Cs cs(4);
+
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+
+  shared_ptr<Data> data = make_shared<Data>("/a");
+  data->setSignature(fakeSignature);
+  cs.insert(*data);
+  
+  shared_ptr<Data> data2 = make_shared<Data>("/b");
+  data2->setSignature(fakeSignature);
+  cs.insert(*data2);
+ 
+  shared_ptr<Data> data3 = make_shared<Data>("/c");
+  data3->setSignature(fakeSignature);
+  cs.insert(*data3);
+  
+  shared_ptr<Data> data4 = make_shared<Data>("/d");
+  data4->setSignature(fakeSignature);
+  cs.insert(*data4);
+ 
+  shared_ptr<Data> data5 = make_shared<Data>("/e");
+  data5->setSignature(fakeSignature);
+  cs.insert(*data5);
+  
+  BOOST_CHECK_EQUAL(cs.size(), 4);
+}
+
+//odd max size
+BOOST_AUTO_TEST_CASE(Replacement2)
+{
+  Cs cs(3);
+  
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+
+  shared_ptr<Data> data = make_shared<Data>("/a");
+  data->setSignature(fakeSignature);
+  cs.insert(*data);
+  
+  shared_ptr<Data> data2 = make_shared<Data>("/b");
+  data2->setSignature(fakeSignature);
+  cs.insert(*data2);
+ 
+  shared_ptr<Data> data3 = make_shared<Data>("/c");
+  data3->setSignature(fakeSignature);
+  cs.insert(*data3);
+  
+  shared_ptr<Data> data4 = make_shared<Data>("/d");
+  data4->setSignature(fakeSignature);
+  cs.insert(*data4);
+  
+  BOOST_CHECK_EQUAL(cs.size(), 3);
+}
+
+BOOST_AUTO_TEST_CASE(InsertAndEraseByName)
+{
+  CsAccessor cs;
+  
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+
+  Name name("/insertandremovebyname");
+  shared_ptr<Data> data = make_shared<Data>(name);
+  data->setSignature(fakeSignature);
+  cs.insert(*data);
+  
+  uint8_t digest1[32];
+  ndn::ndn_digestSha256(data->wireEncode().wire(), data->wireEncode().size(), digest1);
+  
+  shared_ptr<Data> data2 = make_shared<Data>("/a");
+  data2->setSignature(fakeSignature);
+  cs.insert(*data2);
+
+  shared_ptr<Data> data3 = make_shared<Data>("/z");
+  data3->setSignature(fakeSignature);
+  cs.insert(*data3);
+
+  BOOST_CHECK_EQUAL(cs.size(), 3);
+  
+  name.append(digest1, 32);
+  cs.erase(name);
+  BOOST_CHECK_EQUAL(cs.size(), 2);
+}
+
+BOOST_AUTO_TEST_CASE(DigestCalculation)
+{
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+
+  shared_ptr<Data> data = make_shared<Data>("/digest/compute");
+  data->setSignature(fakeSignature);
+  
+  uint8_t digest1[32];
+  ndn::ndn_digestSha256(data->wireEncode().wire(), data->wireEncode().size(), digest1);
+  
+  cs::Entry* entry = new cs::Entry(*data, false);
+  
+  BOOST_CHECK_EQUAL_COLLECTIONS(digest1, digest1+32,
+                                entry->getDigest()->buf(), entry->getDigest()->buf()+32);
+}
+
+BOOST_AUTO_TEST_CASE(InsertCanonical)
+{
+  Cs cs;
+  
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+  
+  shared_ptr<Data> data = make_shared<Data>("/a");
+  data->setSignature(fakeSignature);
+  cs.insert(*data);
+  
+  shared_ptr<Data> data2 = make_shared<Data>("/b");
+  data2->setSignature(fakeSignature);
+  cs.insert(*data2);
+  
+  shared_ptr<Data> data3 = make_shared<Data>("/c");
+  data3->setSignature(fakeSignature);
+  cs.insert(*data3);
+  
+  shared_ptr<Data> data4 = make_shared<Data>("/d");
+  data4->setSignature(fakeSignature);
+  cs.insert(*data4);
+  
+  shared_ptr<Data> data5 = make_shared<Data>("/c/c/1/2/3/4/5/6");
+  data5->setSignature(fakeSignature);
+  cs.insert(*data5);
+  
+  shared_ptr<Data> data6 = make_shared<Data>("/c/c/1/2/3");
+  data6->setSignature(fakeSignature);
+  cs.insert(*data6);
+  
+  shared_ptr<Data> data7 = make_shared<Data>("/c/c/1");
+  data7->setSignature(fakeSignature);
+  cs.insert(*data7);
+}
+
+BOOST_AUTO_TEST_CASE(EraseCanonical)
+{
+  Cs cs;
+  
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+  
+  shared_ptr<Data> data = make_shared<Data>("/a");
+  data->setSignature(fakeSignature);
+  cs.insert(*data);
+  
+  shared_ptr<Data> data2 = make_shared<Data>("/b");
+  data2->setSignature(fakeSignature);
+  cs.insert(*data2);
+  
+  shared_ptr<Data> data3 = make_shared<Data>("/c");
+  data3->setSignature(fakeSignature);
+  cs.insert(*data3);
+  
+  shared_ptr<Data> data4 = make_shared<Data>("/d");
+  data4->setSignature(fakeSignature);
+  cs.insert(*data4);
+  
+  uint8_t digest1[32];
+  ndn::ndn_digestSha256(data->wireEncode().wire(), data->wireEncode().size(), digest1);
+
+  shared_ptr<Data> data5 = make_shared<Data>("/c/c/1/2/3/4/5/6");
+  data5->setSignature(fakeSignature);
+  cs.insert(*data5);
+  
+  shared_ptr<Data> data6 = make_shared<Data>("/c/c/1/2/3");
+  data6->setSignature(fakeSignature);
+  cs.insert(*data6);
+  
+  shared_ptr<Data> data7 = make_shared<Data>("/c/c/1");
+  data7->setSignature(fakeSignature);
+  cs.insert(*data7);
+
+  Name name("/a");
+  name.append(digest1,32);
+  cs.erase(name);
+  BOOST_CHECK_EQUAL(cs.size(), 6);
+}
+
+BOOST_AUTO_TEST_CASE(ImplicitDigestSelector)
+{
+  CsAccessor cs;
+  
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+  
+  Name name("/digest/works");
+  shared_ptr<Data> data = make_shared<Data>(name);
+  data->setSignature(fakeSignature);
+  cs.insert(*data);
+  
+  shared_ptr<Data> data2 = make_shared<Data>("/a");
+  data2->setSignature(fakeSignature);
+  cs.insert(*data2);
+
+  shared_ptr<Data> data3 = make_shared<Data>("/z/z/z");
+  data3->setSignature(fakeSignature);
+  cs.insert(*data3);
+  
+  uint8_t digest1[32];
+  ndn::ndn_digestSha256(data->wireEncode().wire(), data->wireEncode().size(), digest1);
+  
+  uint8_t digest2[32] = {0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1};
+  
+  shared_ptr<Interest> interest = make_shared<Interest>(boost::cref(Name(name).append(digest1, 32)));
+  interest->setMinSuffixComponents(0);
+  interest->setMaxSuffixComponents(0);
+  
+  const Data* found = cs.find(*interest);
+  BOOST_CHECK_NE(found, static_cast<const Data*>(0));
+  BOOST_CHECK_EQUAL(found->getName(), name);
+  
+  shared_ptr<Interest> interest2 = make_shared<Interest>(boost::cref(Name(name).append(digest2, 32)));
+  interest2->setMinSuffixComponents(0);
+  interest2->setMaxSuffixComponents(0);
+  
+  const Data* notfound = cs.find(*interest2);
+  BOOST_CHECK_EQUAL(notfound, static_cast<const Data*>(0));
+}
+
+BOOST_AUTO_TEST_CASE(ChildSelector)
+{
+  Cs cs;
+  
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+  
+  shared_ptr<Data> data = make_shared<Data>("/a");
+  data->setSignature(fakeSignature);
+  cs.insert(*data);
+  
+  shared_ptr<Data> data2 = make_shared<Data>("/b");
+  data2->setSignature(fakeSignature);
+  cs.insert(*data2);
+  
+  shared_ptr<Data> data4 = make_shared<Data>("/d");
+  data4->setSignature(fakeSignature);
+  cs.insert(*data4);
+  
+  shared_ptr<Data> data5 = make_shared<Data>("/c/c");
+  data5->setSignature(fakeSignature);
+  cs.insert(*data5);
+  
+  shared_ptr<Data> data6 = make_shared<Data>("/c/f");
+  data6->setSignature(fakeSignature);
+  cs.insert(*data6);
+  
+  shared_ptr<Data> data7 = make_shared<Data>("/c/n");
+  data7->setSignature(fakeSignature);
+  cs.insert(*data7);
+  
+  shared_ptr<Interest> interest = make_shared<Interest>("/c");
+  interest->setChildSelector(1);
+  
+  const Data* found = cs.find(*interest);
+  BOOST_CHECK_EQUAL(found->getName(), "/c/n");
+
+  shared_ptr<Interest> interest2 = make_shared<Interest>("/c");
+  interest2->setChildSelector(0);
+  
+  const Data* found2 = cs.find(*interest2);
+  BOOST_CHECK_EQUAL(found2->getName(), "/c/c");
+}
+
+BOOST_AUTO_TEST_CASE(ChildSelector2)
+{
+  Cs cs;
+  
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+
+  shared_ptr<Data> data = make_shared<Data>("/a/b/1");
+  data->setSignature(fakeSignature);
+  cs.insert(*data);
+  
+  shared_ptr<Data> data2 = make_shared<Data>("/a/b/2");
+  data2->setSignature(fakeSignature);
+  cs.insert(*data2);
+  
+  shared_ptr<Data> data3 = make_shared<Data>("/a/z/1");
+  data3->setSignature(fakeSignature);
+  cs.insert(*data3);
+  
+  shared_ptr<Data> data4 = make_shared<Data>("/a/z/2");
+  data4->setSignature(fakeSignature);
+  cs.insert(*data4);
+  
+  shared_ptr<Interest> interest = make_shared<Interest>("/a");
+  interest->setChildSelector(1);
+  
+  const Data* found = cs.find(*interest);
+  BOOST_CHECK_EQUAL(found->getName(), "/a/z/1");
+}
+
+BOOST_AUTO_TEST_CASE(MustBeFreshSelector)
+{
+  Cs cs;
+  
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+  
+  Name name("/insert/nonfresh");
+  shared_ptr<Data> data = make_shared<Data>(name);
+  data->setFreshnessPeriod(500);
+  data->setSignature(fakeSignature);
+  cs.insert(*data);
+  
+  sleep(1);
+  
+  shared_ptr<Interest> interest = make_shared<Interest>(name);
+  interest->setMustBeFresh(true);
+  
+  const Data* found = cs.find(*interest);
+  BOOST_CHECK_EQUAL(found, static_cast<const Data*>(0));
+}
+
+BOOST_AUTO_TEST_CASE(MinMaxComponentsSelector)
+{
+  Cs cs;
+  
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+  
+  shared_ptr<Data> data = make_shared<Data>("/a");
+  data->setSignature(fakeSignature);
+  cs.insert(*data);
+  
+  shared_ptr<Data> data2 = make_shared<Data>("/b");
+  data2->setSignature(fakeSignature);
+  cs.insert(*data2);
+  
+  shared_ptr<Data> data4 = make_shared<Data>("/d");
+  data4->setSignature(fakeSignature);
+  cs.insert(*data4);
+  
+  shared_ptr<Data> data5 = make_shared<Data>("/c/c/1/2/3/4/5/6");
+  data5->setSignature(fakeSignature);
+  cs.insert(*data5);
+  
+  shared_ptr<Data> data6 = make_shared<Data>("/c/c/6/7/8/9");
+  data6->setSignature(fakeSignature);
+  cs.insert(*data6);
+  
+  shared_ptr<Data> data7 = make_shared<Data>("/c/c/1/2/3");
+  data7->setSignature(fakeSignature);
+  cs.insert(*data7);
+  
+  shared_ptr<Data> data8 = make_shared<Data>("/c/c/1");
+  data8->setSignature(fakeSignature);
+  cs.insert(*data8);
+  
+  shared_ptr<Interest> interest = make_shared<Interest>("/c/c");
+  interest->setMinSuffixComponents(3);
+  interest->setChildSelector(0);
+  
+  const Data* found = cs.find(*interest);
+  BOOST_CHECK_EQUAL(found->getName(), "/c/c/1/2/3/4/5/6");
+
+  shared_ptr<Interest> interest2 = make_shared<Interest>("/c/c");
+  interest2->setMinSuffixComponents(4);
+  interest2->setChildSelector(1);
+  
+  const Data* found2 = cs.find(*interest2);
+  BOOST_CHECK_EQUAL(found2->getName(), "/c/c/6/7/8/9");
+  
+  shared_ptr<Interest> interest3 = make_shared<Interest>("/c/c");
+  interest3->setMaxSuffixComponents(2);
+  interest3->setChildSelector(1);
+  
+  const Data* found3 = cs.find(*interest3);
+  BOOST_CHECK_EQUAL(found3->getName(), "/c/c/1");
+}
+
+BOOST_AUTO_TEST_CASE(ExcludeSelector)
+{
+  Cs cs;
+  
+  ndn::SignatureSha256WithRsa fakeSignature;
+  fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+  
+  shared_ptr<Data> data = make_shared<Data>("/a");
+  data->setSignature(fakeSignature);
+  cs.insert(*data);
+  
+  shared_ptr<Data> data2 = make_shared<Data>("/b");
+  data2->setSignature(fakeSignature);
+  cs.insert(*data2);
+  
+  shared_ptr<Data> data3 = make_shared<Data>("/c/a");
+  data3->setSignature(fakeSignature);
+  cs.insert(*data3);
+  
+  shared_ptr<Data> data4 = make_shared<Data>("/d");
+  data4->setSignature(fakeSignature);
+  cs.insert(*data4);
+
+  shared_ptr<Data> data5 = make_shared<Data>("/c/c");
+  data5->setSignature(fakeSignature);
+  cs.insert(*data5);
+  
+  shared_ptr<Data> data6 = make_shared<Data>("/c/f");
+  data6->setSignature(fakeSignature);
+  cs.insert(*data6);
+  
+  shared_ptr<Data> data7 = make_shared<Data>("/c/n");
+  data7->setSignature(fakeSignature);
+  cs.insert(*data7);
+  
+  shared_ptr<Interest> interest = make_shared<Interest>("/c");
+  interest->setChildSelector(1);
+  Exclude e;
+  e.excludeOne (Name::Component("n"));
+  interest->setExclude(e);
+  
+  const Data* found = cs.find(*interest);
+  BOOST_CHECK_EQUAL(found->getName(), "/c/f");
+
+  shared_ptr<Interest> interest2 = make_shared<Interest>("/c");
+  interest2->setChildSelector(0);
+  
+  Exclude e2;
+  e2.excludeOne (Name::Component("a"));
+  interest2->setExclude(e2);
+
+  const Data* found2 = cs.find(*interest2);
+  BOOST_CHECK_EQUAL(found2->getName(), "/c/c");
+  
+  shared_ptr<Interest> interest3 = make_shared<Interest>("/c");
+  interest3->setChildSelector(0);
+  
+  Exclude e3;
+  e3.excludeOne (Name::Component("c"));
+  interest3->setExclude(e3);
+
+  const Data* found3 = cs.find(*interest3);
+  BOOST_CHECK_EQUAL(found3->getName(), "/c/a");
+}
+
+//
+
+class FindFixture : protected BaseFixture
+{
+protected:
+  void
+  insert(uint32_t id, const Name& name)
+  {
+    shared_ptr<Data> data = make_shared<Data>(name);
+    data->setFreshnessPeriod(99999);
+    data->setContent(reinterpret_cast<const uint8_t*>(&id), sizeof(id));
+    
+    ndn::SignatureSha256WithRsa fakeSignature;
+    fakeSignature.setValue(ndn::dataBlock(tlv::SignatureValue, reinterpret_cast<const uint8_t*>(0), 0));
+    data->setSignature(fakeSignature);
+    
+    m_cs.insert(*data);
+  }
+  
+  Interest&
+  startInterest(const Name& name)
+  {
+    m_interest = make_shared<Interest>(name);
+    return *m_interest;
+  }
+  
+  uint32_t
+  find()
+  {
+    const Data* found = m_cs.find(*m_interest);
+    if (found == 0) {
+      return 0;
+    }
+    const Block& content = found->getContent();
+    if (content.value_size() != sizeof(uint32_t)) {
+      return 0;
+    }
+    return *reinterpret_cast<const uint32_t*>(content.value());
+  }
+  
+protected:
+  Cs m_cs;
+  shared_ptr<Interest> m_interest;
+};
+
+BOOST_FIXTURE_TEST_SUITE(Find, FindFixture)
+
+BOOST_AUTO_TEST_CASE(EmptyDataName)
+{
+  insert(1, "ndn:/");
+  
+  startInterest("ndn:/");
+  BOOST_CHECK_EQUAL(find(), 1);
+}
+
+BOOST_AUTO_TEST_CASE(EmptyInterestName)
+{
+  insert(1, "ndn:/A");
+  
+  startInterest("ndn:/");
+  BOOST_CHECK_EQUAL(find(), 1);
+}
+
+BOOST_AUTO_TEST_CASE(Leftmost)
+{
+  insert(1, "ndn:/A");
+  insert(2, "ndn:/B/p/1");
+  insert(3, "ndn:/B/p/2");
+  insert(4, "ndn:/B/q/1");
+  insert(5, "ndn:/B/q/2");
+  insert(6, "ndn:/C");
+  
+  startInterest("ndn:/B");
+  BOOST_CHECK_EQUAL(find(), 2);
+}
+
+BOOST_AUTO_TEST_CASE(Rightmost)
+{
+  insert(1, "ndn:/A");
+  insert(2, "ndn:/B/p/1");
+  insert(3, "ndn:/B/p/2");
+  insert(4, "ndn:/B/q/1");
+  insert(5, "ndn:/B/q/2");
+  insert(6, "ndn:/C");
+  
+  startInterest("ndn:/B")
+    .setChildSelector(1);
+  BOOST_CHECK_EQUAL(find(), 4);
+}
+
+BOOST_AUTO_TEST_CASE(Leftmost_ExactName1)
+{
+  insert(1, "ndn:/");
+  insert(2, "ndn:/A/B");
+  insert(3, "ndn:/A/C");
+  insert(4, "ndn:/A");
+  insert(5, "ndn:/D");
+  
+  // Intuitively you would think Data 4 should be between Data 1 and 2,
+  // but Data 4 has full Name ndn:/A/<32-octet hash>.
+  startInterest("ndn:/A");
+  BOOST_CHECK_EQUAL(find(), 2);
+}
+
+BOOST_AUTO_TEST_CASE(Leftmost_ExactName33)
+{
+  insert(1, "ndn:/");
+  insert(2, "ndn:/A");
+  insert(3, "ndn:/A/BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB"); // 33 'B's
+  insert(4, "ndn:/A/CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC"); // 33 'C's
+  insert(5, "ndn:/D");
+  
+  // Data 2 is returned, because <32-octet hash> is less than Data 3.
+  startInterest("ndn:/A");
+  BOOST_CHECK_EQUAL(find(), 2);
+}
+
+BOOST_AUTO_TEST_CASE(MinSuffixComponents)
+{
+  insert(1, "ndn:/A/1/2/3/4");
+  insert(2, "ndn:/B/1/2/3");
+  insert(3, "ndn:/C/1/2");
+  insert(4, "ndn:/D/1");
+  insert(5, "ndn:/E");
+  insert(6, "ndn:/");
+  
+  startInterest("ndn:/")
+    .setChildSelector(1)
+    .setMinSuffixComponents(0);
+  BOOST_CHECK_EQUAL(find(), 6);
+  
+  startInterest("ndn:/")
+    .setChildSelector(1)
+    .setMinSuffixComponents(1);
+  BOOST_CHECK_EQUAL(find(), 6);
+  
+  startInterest("ndn:/")
+    .setChildSelector(1)
+    .setMinSuffixComponents(2);
+  BOOST_CHECK_EQUAL(find(), 5);
+  
+  startInterest("ndn:/")
+    .setChildSelector(1)
+    .setMinSuffixComponents(3);
+  BOOST_CHECK_EQUAL(find(), 4);
+  
+  startInterest("ndn:/")
+    .setChildSelector(1)
+    .setMinSuffixComponents(4);
+  BOOST_CHECK_EQUAL(find(), 3);
+  
+  startInterest("ndn:/")
+    .setChildSelector(1)
+    .setMinSuffixComponents(5);
+  BOOST_CHECK_EQUAL(find(), 2);
+  
+  startInterest("ndn:/")
+    .setChildSelector(1)
+    .setMinSuffixComponents(6);
+  BOOST_CHECK_EQUAL(find(), 1);
+  
+  startInterest("ndn:/")
+    .setChildSelector(1)
+    .setMinSuffixComponents(7);
+  BOOST_CHECK_EQUAL(find(), 0);
+}
+
+BOOST_AUTO_TEST_CASE(MaxSuffixComponents)
+{
+  insert(1, "ndn:/");
+  insert(2, "ndn:/A");
+  insert(3, "ndn:/A/B");
+  insert(4, "ndn:/A/B/C");
+  insert(5, "ndn:/A/B/C/D");
+  insert(6, "ndn:/A/B/C/D/E");
+  // Order is 6,5,4,3,2,1, because <32-octet hash> is greater than a 1-octet component.
+  
+  startInterest("ndn:/")
+    .setMaxSuffixComponents(0);
+  BOOST_CHECK_EQUAL(find(), 0);
+  
+  startInterest("ndn:/")
+    .setMaxSuffixComponents(1);
+  BOOST_CHECK_EQUAL(find(), 1);
+  
+  startInterest("ndn:/")
+    .setMaxSuffixComponents(2);
+  BOOST_CHECK_EQUAL(find(), 2);
+  
+  startInterest("ndn:/")
+    .setMaxSuffixComponents(3);
+  BOOST_CHECK_EQUAL(find(), 3);
+  
+  startInterest("ndn:/")
+    .setMaxSuffixComponents(4);
+  BOOST_CHECK_EQUAL(find(), 4);
+  
+  startInterest("ndn:/")
+    .setMaxSuffixComponents(5);
+  BOOST_CHECK_EQUAL(find(), 5);
+  
+  startInterest("ndn:/")
+    .setMaxSuffixComponents(6);
+  BOOST_CHECK_EQUAL(find(), 6);
+}
+
+BOOST_AUTO_TEST_CASE(DigestOrder)
+{
+  insert(1, "ndn:/A");
+  insert(2, "ndn:/A");
+  // We don't know which comes first, but there must be some order
+  
+  startInterest("ndn:/A")
+    .setChildSelector(0);
+  uint32_t leftmost = find();
+  
+  startInterest("ndn:/A")
+    .setChildSelector(1);
+  uint32_t rightmost = find();
+  
+  BOOST_CHECK_NE(leftmost, rightmost);
+}
+
+BOOST_AUTO_TEST_CASE(DigestExclude)
+{
+  insert(1, "ndn:/A/B");
+  insert(2, "ndn:/A");
+  insert(3, "ndn:/A/CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC"); // 33 'C's
+  
+  startInterest("ndn:/A")
+    .setExclude(Exclude().excludeBefore(ndn::name::Component(reinterpret_cast<const uint8_t*>(
+        "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF"
+        "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF"), 31))); // 31 0xFF's
+  BOOST_CHECK_EQUAL(find(), 2);
+  
+  startInterest("ndn:/A")
+    .setChildSelector(1)
+    .setExclude(Exclude().excludeAfter(ndn::name::Component(reinterpret_cast<const uint8_t*>(
+        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
+        "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
+        "\x00"), 33))); // 33 0x00's
+  BOOST_CHECK_EQUAL(find(), 2);
+}
+
+BOOST_AUTO_TEST_SUITE_END()
+
 BOOST_AUTO_TEST_SUITE_END()
 
 } // namespace tests