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#include "DHTBucketTree.h"
#include <cstring>
#include <cppunit/extensions/HelperMacros.h>
#include "DHTNode.h"
#include "DHTBucket.h"
#include "Exception.h"
#include "util.h"
namespace aria2 {
class DHTBucketTreeTest : public CppUnit::TestFixture {
CPPUNIT_TEST_SUITE(DHTBucketTreeTest);
CPPUNIT_TEST(testDig);
CPPUNIT_TEST(testFindBucketFor);
CPPUNIT_TEST(testFindClosestKNodes);
CPPUNIT_TEST(testEnumerateBucket);
CPPUNIT_TEST_SUITE_END();
public:
void testDig();
void testFindBucketFor();
void testFindClosestKNodes();
void testEnumerateBucket();
};
CPPUNIT_TEST_SUITE_REGISTRATION(DHTBucketTreeTest);
void DHTBucketTreeTest::testDig()
{
unsigned char localNodeID[DHT_ID_LENGTH];
memset(localNodeID, 0xff, DHT_ID_LENGTH);
auto localNode = std::make_shared<DHTNode>(localNodeID);
auto bucket1 = std::make_shared<DHTBucket>(localNode);
auto bucket2 = std::shared_ptr<DHTBucket>(bucket1->split());
auto bucket3 = std::shared_ptr<DHTBucket>(bucket1->split());
// Tree: number is prefix
//
// +
// +------+------+
// b2 |
// 0 +------+------+
// b3 b1
// 10 11
// |
// localNode is here
{
DHTBucketTreeNode b(bucket1);
CPPUNIT_ASSERT(!b.dig(localNode->getID()));
}
{
DHTBucketTreeNode b(make_unique<DHTBucketTreeNode>(bucket3),
make_unique<DHTBucketTreeNode>(bucket1));
CPPUNIT_ASSERT(b.dig(localNode->getID()) == b.getRight());
}
}
void DHTBucketTreeTest::testFindBucketFor()
{
unsigned char localNodeID[DHT_ID_LENGTH];
memset(localNodeID, 0xaa, DHT_ID_LENGTH);
auto localNode = std::make_shared<DHTNode>(localNodeID);
auto bucket1 = std::make_shared<DHTBucket>(localNode);
auto bucket2 = std::shared_ptr<DHTBucket>(bucket1->split());
auto bucket3 = std::shared_ptr<DHTBucket>(bucket1->split());
auto bucket4 = std::shared_ptr<DHTBucket>(bucket3->split());
auto bucket5 = std::shared_ptr<DHTBucket>(bucket3->split());
{
DHTBucketTreeNode b(bucket5);
CPPUNIT_ASSERT(*bucket5 == *dht::findBucketFor(&b, localNodeID));
}
{
// Tree: number is prefix
//
// +
// +------+------+
// b2 |
// 0 +------+------+
// | b1
// +-----+-----+ 11
// b4 |
// 100 +-----+-----+
// b5 b3
// 1010 1011
// |
// localNode is here
auto b1 = make_unique<DHTBucketTreeNode>(bucket1);
auto b2 = make_unique<DHTBucketTreeNode>(bucket2);
auto b3 = make_unique<DHTBucketTreeNode>(bucket3);
auto b4 = make_unique<DHTBucketTreeNode>(bucket4);
auto b5 = make_unique<DHTBucketTreeNode>(bucket5);
auto bp1 = make_unique<DHTBucketTreeNode>(std::move(b5), std::move(b3));
auto bp2 = make_unique<DHTBucketTreeNode>(std::move(b4), std::move(bp1));
auto bp3 = make_unique<DHTBucketTreeNode>(std::move(bp2), std::move(b1));
DHTBucketTreeNode bp4(std::move(b2), std::move(bp3));
CPPUNIT_ASSERT(*bucket5 == *dht::findBucketFor(&bp4, localNode->getID()));
}
}
void DHTBucketTreeTest::testFindClosestKNodes()
{
unsigned char localNodeID[DHT_ID_LENGTH];
memset(localNodeID, 0xaa, DHT_ID_LENGTH);
auto localNode = std::make_shared<DHTNode>(localNodeID);
auto bucket1 = std::make_shared<DHTBucket>(localNode);
auto bucket2 = std::shared_ptr<DHTBucket>(bucket1->split());
auto bucket3 = std::shared_ptr<DHTBucket>(bucket1->split());
auto bucket4 = std::shared_ptr<DHTBucket>(bucket3->split());
auto bucket5 = std::shared_ptr<DHTBucket>(bucket3->split());
unsigned char id[DHT_ID_LENGTH];
{
auto b1 = make_unique<DHTBucketTreeNode>(bucket1);
auto b2 = make_unique<DHTBucketTreeNode>(bucket2);
auto b3 = make_unique<DHTBucketTreeNode>(bucket3);
auto b4 = make_unique<DHTBucketTreeNode>(bucket4);
auto b5 = make_unique<DHTBucketTreeNode>(bucket5);
auto bp1 = make_unique<DHTBucketTreeNode>(std::move(b5), std::move(b3));
auto bp2 = make_unique<DHTBucketTreeNode>(std::move(b4), std::move(bp1));
auto bp3 = make_unique<DHTBucketTreeNode>(std::move(bp2), std::move(b1));
DHTBucketTreeNode bp4(std::move(b2), std::move(bp3));
for (size_t i = 0; i < 2; ++i) {
bucket1->getRandomNodeID(id);
bucket1->addNode(std::make_shared<DHTNode>(id));
bucket2->getRandomNodeID(id);
bucket2->addNode(std::make_shared<DHTNode>(id));
bucket3->getRandomNodeID(id);
bucket3->addNode(std::make_shared<DHTNode>(id));
bucket4->getRandomNodeID(id);
bucket4->addNode(std::make_shared<DHTNode>(id));
bucket5->getRandomNodeID(id);
bucket5->addNode(std::make_shared<DHTNode>(id));
}
{
unsigned char targetID[DHT_ID_LENGTH];
memset(targetID, 0x80, DHT_ID_LENGTH);
std::vector<std::shared_ptr<DHTNode>> nodes;
dht::findClosestKNodes(nodes, &bp4, targetID);
CPPUNIT_ASSERT_EQUAL((size_t)8, nodes.size());
CPPUNIT_ASSERT(bucket4->isInRange(nodes[0]));
CPPUNIT_ASSERT(bucket4->isInRange(nodes[1]));
CPPUNIT_ASSERT(bucket5->isInRange(nodes[2]));
CPPUNIT_ASSERT(bucket5->isInRange(nodes[3]));
CPPUNIT_ASSERT(bucket3->isInRange(nodes[4]));
CPPUNIT_ASSERT(bucket3->isInRange(nodes[5]));
CPPUNIT_ASSERT(bucket1->isInRange(nodes[6]));
CPPUNIT_ASSERT(bucket1->isInRange(nodes[7]));
}
{
unsigned char targetID[DHT_ID_LENGTH];
memset(targetID, 0xf0, DHT_ID_LENGTH);
std::vector<std::shared_ptr<DHTNode>> nodes;
dht::findClosestKNodes(nodes, &bp4, targetID);
CPPUNIT_ASSERT_EQUAL((size_t)8, nodes.size());
CPPUNIT_ASSERT(bucket1->isInRange(nodes[0]));
CPPUNIT_ASSERT(bucket1->isInRange(nodes[1]));
CPPUNIT_ASSERT(bucket3->isInRange(nodes[2]));
CPPUNIT_ASSERT(bucket3->isInRange(nodes[3]));
CPPUNIT_ASSERT(bucket5->isInRange(nodes[4]));
CPPUNIT_ASSERT(bucket5->isInRange(nodes[5]));
CPPUNIT_ASSERT(bucket4->isInRange(nodes[6]));
CPPUNIT_ASSERT(bucket4->isInRange(nodes[7]));
}
{
for (size_t i = 0; i < 6; ++i) {
bucket4->getRandomNodeID(id);
bucket4->addNode(std::make_shared<DHTNode>(id));
}
unsigned char targetID[DHT_ID_LENGTH];
memset(targetID, 0x80, DHT_ID_LENGTH);
std::vector<std::shared_ptr<DHTNode>> nodes;
dht::findClosestKNodes(nodes, &bp4, targetID);
CPPUNIT_ASSERT_EQUAL((size_t)8, nodes.size());
for (size_t i = 0; i < DHTBucket::K; ++i) {
CPPUNIT_ASSERT(bucket4->isInRange(nodes[i]));
}
}
}
}
void DHTBucketTreeTest::testEnumerateBucket()
{
unsigned char localNodeID[DHT_ID_LENGTH];
memset(localNodeID, 0xaa, DHT_ID_LENGTH);
auto localNode = std::make_shared<DHTNode>(localNodeID);
auto bucket1 = std::make_shared<DHTBucket>(localNode);
auto bucket2 = std::shared_ptr<DHTBucket>(bucket1->split());
auto bucket3 = std::shared_ptr<DHTBucket>(bucket1->split());
auto bucket4 = std::shared_ptr<DHTBucket>(bucket3->split());
auto bucket5 = std::shared_ptr<DHTBucket>(bucket3->split());
{
DHTBucketTreeNode b(bucket1);
std::vector<std::shared_ptr<DHTBucket>> buckets;
dht::enumerateBucket(buckets, &b);
CPPUNIT_ASSERT_EQUAL((size_t)1, buckets.size());
CPPUNIT_ASSERT(*bucket1 == *buckets[0]);
}
{
auto b1 = make_unique<DHTBucketTreeNode>(bucket1);
auto b2 = make_unique<DHTBucketTreeNode>(bucket2);
auto b3 = make_unique<DHTBucketTreeNode>(bucket3);
auto b4 = make_unique<DHTBucketTreeNode>(bucket4);
auto b5 = make_unique<DHTBucketTreeNode>(bucket5);
auto bp1 = make_unique<DHTBucketTreeNode>(std::move(b5), std::move(b3));
auto bp2 = make_unique<DHTBucketTreeNode>(std::move(b4), std::move(bp1));
auto bp3 = make_unique<DHTBucketTreeNode>(std::move(bp2), std::move(b1));
DHTBucketTreeNode bp4(std::move(b2), std::move(bp3));
std::vector<std::shared_ptr<DHTBucket>> buckets;
dht::enumerateBucket(buckets, &bp4);
CPPUNIT_ASSERT_EQUAL((size_t)5, buckets.size());
CPPUNIT_ASSERT(*bucket2 == *buckets[0]);
CPPUNIT_ASSERT(*bucket4 == *buckets[1]);
CPPUNIT_ASSERT(*bucket5 == *buckets[2]);
CPPUNIT_ASSERT(*bucket3 == *buckets[3]);
CPPUNIT_ASSERT(*bucket1 == *buckets[4]);
}
}
} // namespace aria2
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