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Creates unittests for addrman, makes addrman testable.

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Adds several unittests for addrman to verify it works as expected.
Makes small modifications to addrman to allow deterministic and targeted tests.

Signed-off-by: Simon <simon@bitcartel.com>
This commit is contained in:
EthanHeilman
2015-09-22 15:24:16 -04:00
committed by Simon
parent b0f75847ea
commit 8375e1a3e7
4 changed files with 199 additions and 6 deletions
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1
src/Makefile.test.include
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@@ -34,6 +34,7 @@ GENERATED_TEST_FILES = $(JSON_TEST_FILES:.json=.json.h) $(RAW_TEST_FILES:.raw=.r
BITCOIN_TESTS =\
test/arith_uint256_tests.cpp \
test/bignum.h \
test/addrman_tests.cpp \
test/alert_tests.cpp \
test/allocator_tests.cpp \
test/base32_tests.cpp \

8
src/addrman.cpp
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@@ -331,7 +331,7 @@ void CAddrMan::Attempt_(const CService& addr, int64_t nTime)
info.nAttempts++;
}
CAddrInfo CAddrMan::Select_()
CAddrInfo CAddrMan::Select_(bool newOnly)
{
if (size() == 0)
return CAddrInfo();
@@ -339,8 +339,12 @@ CAddrInfo CAddrMan::Select_()
// Track number of attempts to find a table entry, before giving up
int nRetries = 0;
if (newOnly && nNew == 0)
return CAddrInfo();
// Use a 50% chance for choosing between tried and new table entries.
if (nTried > 0 && (nNew == 0 || GetRandInt(2) == 0)) {
if (!newOnly &&
(nTried > 0 && (nNew == 0 || GetRandInt(2) == 0))) {
// use a tried node
double fChanceFactor = 1.0;
while (nRetries++ < ADDRMAN_TRIED_BUCKET_COUNT) {

16
src/addrman.h
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@@ -22,6 +22,8 @@
*/
class CAddrInfo : public CAddress
{
public:
//! last try whatsoever by us (memory only)
int64_t nLastTry;
@@ -230,8 +232,8 @@ protected:
//! Mark an entry as attempted to connect.
void Attempt_(const CService &addr, int64_t nTime);
//! Select an address to connect to.
CAddrInfo Select_();
//! Select an address to connect to, if newOnly is set to true, only the new table is selected from.
CAddrInfo Select_(bool newOnly);
#ifdef DEBUG_ADDRMAN
//! Perform consistency check. Returns an error code or zero.
@@ -532,13 +534,13 @@ public:
/**
* Choose an address to connect to.
*/
CAddrInfo Select()
CAddrInfo Select(bool newOnly = false)
{
CAddrInfo addrRet;
{
LOCK(cs);
Check();
addrRet = Select_();
addrRet = Select_(newOnly);
Check();
}
return addrRet;
@@ -567,6 +569,12 @@ public:
Check();
}
}
//! Ensure that bucket placement is always the same for testing purposes.
void MakeDeterministic(){
nKey.SetNull(); //Do not use outside of tests.
}
};
#endif // BITCOIN_ADDRMAN_H

180
src/test/addrman_tests.cpp Normal file
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@@ -0,0 +1,180 @@
// Copyright (c) 2012-2013 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include "addrman.h"
#include "test/test_bitcoin.h"
#include <string>
#include <boost/test/unit_test.hpp>
#include "random.h"
using namespace std;
class CAddrManTest : public CAddrMan{};
BOOST_FIXTURE_TEST_SUITE(addrman_tests, BasicTestingSetup)
BOOST_AUTO_TEST_CASE(addrman_simple)
{
CAddrManTest addrman;
// Set addrman addr placement to be deterministic.
addrman.MakeDeterministic();
CNetAddr source = CNetAddr("252.2.2.2:8333");
// Test 1: Does Addrman respond correctly when empty.
BOOST_CHECK(addrman.size() == 0);
CAddrInfo addr_null = addrman.Select();
BOOST_CHECK(addr_null.ToString() == "[::]:0");
// Test 2: Does Addrman::Add work as expected.
CService addr1 = CService("250.1.1.1:8333");
addrman.Add(CAddress(addr1), source);
BOOST_CHECK(addrman.size() == 1);
CAddrInfo addr_ret1 = addrman.Select();
BOOST_CHECK(addr_ret1.ToString() == "250.1.1.1:8333");
// Test 3: Does IP address deduplication work correctly.
// Expected dup IP should not be added.
CService addr1_dup = CService("250.1.1.1:8333");
addrman.Add(CAddress(addr1_dup), source);
BOOST_CHECK(addrman.size() == 1);
// Test 5: New table has one addr and we add a diff addr we should
// have two addrs.
CService addr2 = CService("250.1.1.2:8333");
addrman.Add(CAddress(addr2), source);
BOOST_CHECK(addrman.size() == 2);
// Test 6: AddrMan::Clear() should empty the new table.
addrman.Clear();
BOOST_CHECK(addrman.size() == 0);
CAddrInfo addr_null2 = addrman.Select();
BOOST_CHECK(addr_null2.ToString() == "[::]:0");
}
BOOST_AUTO_TEST_CASE(addrman_ports)
{
CAddrManTest addrman;
// Set addrman addr placement to be deterministic.
addrman.MakeDeterministic();
CNetAddr source = CNetAddr("252.2.2.2:8333");
BOOST_CHECK(addrman.size() == 0);
// Test 7; Addr with same IP but diff port does not replace existing addr.
CService addr1 = CService("250.1.1.1:8333");
addrman.Add(CAddress(addr1), source);
BOOST_CHECK(addrman.size() == 1);
CService addr1_port = CService("250.1.1.1:8334");
addrman.Add(CAddress(addr1_port), source);
BOOST_CHECK(addrman.size() == 1);
CAddrInfo addr_ret2 = addrman.Select();
BOOST_CHECK(addr_ret2.ToString() == "250.1.1.1:8333");
// Test 8: Add same IP but diff port to tried table, it doesn't get added.
// Perhaps this is not ideal behavior but it is the current behavior.
addrman.Good(CAddress(addr1_port));
BOOST_CHECK(addrman.size() == 1);
bool newOnly = true;
CAddrInfo addr_ret3 = addrman.Select(newOnly);
BOOST_CHECK(addr_ret3.ToString() == "250.1.1.1:8333");
}
BOOST_AUTO_TEST_CASE(addrman_select)
{
CAddrManTest addrman;
// Set addrman addr placement to be deterministic.
addrman.MakeDeterministic();
CNetAddr source = CNetAddr("252.2.2.2:8333");
// Test 9: Select from new with 1 addr in new.
CService addr1 = CService("250.1.1.1:8333");
addrman.Add(CAddress(addr1), source);
BOOST_CHECK(addrman.size() == 1);
bool newOnly = true;
CAddrInfo addr_ret1 = addrman.Select(newOnly);
BOOST_CHECK(addr_ret1.ToString() == "250.1.1.1:8333");
// Test 10: move addr to tried, select from new expected nothing returned.
addrman.Good(CAddress(addr1));
BOOST_CHECK(addrman.size() == 1);
CAddrInfo addr_ret2 = addrman.Select(newOnly);
BOOST_CHECK(addr_ret2.ToString() == "[::]:0");
CAddrInfo addr_ret3 = addrman.Select();
BOOST_CHECK(addr_ret3.ToString() == "250.1.1.1:8333");
}
BOOST_AUTO_TEST_CASE(addrman_new_collisions)
{
CAddrManTest addrman;
// Set addrman addr placement to be deterministic.
addrman.MakeDeterministic();
CNetAddr source = CNetAddr("252.2.2.2:8333");
BOOST_CHECK(addrman.size() == 0);
for (unsigned int i = 1; i < 4; i++){
CService addr = CService("250.1.1."+boost::to_string(i));
addrman.Add(CAddress(addr), source);
//Test 11: No collision in new table yet.
BOOST_CHECK(addrman.size() == i);
}
//Test 12: new table collision!
CService addr1 = CService("250.1.1.4");
addrman.Add(CAddress(addr1), source);
BOOST_CHECK(addrman.size() == 3);
CService addr2 = CService("250.1.1.5");
addrman.Add(CAddress(addr2), source);
BOOST_CHECK(addrman.size() == 4);
}
BOOST_AUTO_TEST_CASE(addrman_tried_collisions)
{
CAddrManTest addrman;
// Set addrman addr placement to be deterministic.
addrman.MakeDeterministic();
CNetAddr source = CNetAddr("252.2.2.2:8333");
BOOST_CHECK(addrman.size() == 0);
for (unsigned int i = 1; i < 75; i++){
CService addr = CService("250.1.1."+boost::to_string(i));
addrman.Add(CAddress(addr), source);
addrman.Good(CAddress(addr));
//Test 13: No collision in tried table yet.
BOOST_TEST_MESSAGE(addrman.size());
BOOST_CHECK(addrman.size() == i);
}
//Test 14: tried table collision!
CService addr1 = CService("250.1.1.76");
addrman.Add(CAddress(addr1), source);
BOOST_CHECK(addrman.size() == 74);
CService addr2 = CService("250.1.1.77");
addrman.Add(CAddress(addr2), source);
BOOST_CHECK(addrman.size() == 75);
}
BOOST_AUTO_TEST_SUITE_END()