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test_btree_ops.cpp
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test_btree_ops.cpp
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/*****************************************************************************/
/* Milliways - B+ trees and key-value store C++ library */
/* */
/* Copyright 2016 Marco Pantaleoni and J CUBE Inc. Tokyo, Japan. */
/* */
/* Author: Marco Pantaleoni <marco.pantaleoni@gmail.com> */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */
/* See the License for the specific language governing permissions and */
/* limitations under the License. */
/*****************************************************************************/
#define CATCH_CONFIG_MAIN // This tells Catch to provide a main() - only do this in one cpp file
#include "catch.hpp"
#include "Seriously.h"
#include "BTreeNode.h"
#include "BTree.h"
#include "BTreeFileStorage.h"
#define B_TEST 4
#define BLOCK_SIZE 4096
TEST_CASE( "BTree Operations", "[BTreeOps]" ) {
typedef milliways::BTree<B_TEST, seriously::Traits<std::string>, seriously::Traits<int32_t> > btree_t;
typedef milliways::BTreeMemoryStorage<B_TEST, seriously::Traits<std::string>, seriously::Traits<int32_t> > btree_mem_st_t;
typedef milliways::BTreeFileStorage< BLOCK_SIZE, B_TEST, seriously::Traits<std::string>, seriously::Traits<int32_t> > btree_fs_t;
typedef XTYPENAME btree_t::node_type btree_node_t;
typedef milliways::shptr<XTYPENAME btree_t::node_type> btree_node_ptr_t;
typedef XTYPENAME btree_t::lookup_type btree_lookup_t;
typedef milliways::node_id_t btree_node_id_t;
SECTION( "can search in a node" ) {
btree_node_id_t root_id;
btree_t tree;
// btree_fs_t* storage = new btree_fs_t("/tmp/test_tree_2");
// storage->attach(&tree);
// tree.open();
if (!tree.hasRoot())
tree.node_alloc();
btree_node_ptr_t root = tree.root();
btree_node_ptr_t child1 = root->child_alloc();
btree_node_ptr_t child2 = root->child_alloc();
root->n(1);
root->child(0) = child1->id();
root->child(1) = child2->id();
root->key(0) = "c";
child1->n(3);
child1->key(0) = "abc";
child1->value(0) = 123;
child1->key(1) = "about";
child1->value(1) = 874;
child1->key(2) = "antiparticle";
child1->value(2) = 268;
child2->n(1);
child2->key(0) = "def";
child2->value(0) = 575;
root_id = root->id();
btree_lookup_t lookup;
bool found = child1->search(lookup, "about");
REQUIRE(found);
REQUIRE(lookup.found());
REQUIRE(lookup.pos() == 1);
REQUIRE(lookup.key() == "about");
found = child1->search(lookup, "abridged");
REQUIRE(! found);
REQUIRE(! lookup.found());
REQUIRE(lookup.pos() == 2);
REQUIRE(lookup.key() == "abridged");
found = root->search(lookup, "def");
REQUIRE(found);
REQUIRE(lookup.found());
REQUIRE(lookup.pos() == 0);
REQUIRE(lookup.key() == "def");
tree.close();
}
SECTION( "can insert" ) {
btree_node_id_t root_id;
btree_t tree;
// btree_fs_t* storage = new btree_fs_t("/tmp/test_tree_2");
// storage->attach(&tree);
// tree.open();
tree.insert("13", 13);
tree.insert("7", 7);
tree.insert("23", 23);
tree.insert("31", 31);
tree.insert("43", 43);
tree.insert("11", 11);
tree.insert("2", 2);
tree.insert("17", 17);
tree.insert("5", 5);
tree.insert("3", 3);
btree_lookup_t lookup;
bool found = tree.search(lookup, "13");
REQUIRE(found);
REQUIRE(lookup.found());
REQUIRE(lookup.key() == "13");
std::cerr << lookup << std::endl;
found = tree.search(lookup, "7");
REQUIRE(found);
REQUIRE(lookup.found());
REQUIRE(lookup.key() == "7");
std::cerr << lookup << std::endl;
found = tree.search(lookup, "23");
REQUIRE(found);
REQUIRE(lookup.found());
REQUIRE(lookup.key() == "23");
std::cerr << lookup << std::endl;
found = tree.search(lookup, "31");
REQUIRE(found);
REQUIRE(lookup.found());
REQUIRE(lookup.key() == "31");
std::cerr << lookup << std::endl;
found = tree.search(lookup, "43");
REQUIRE(found);
REQUIRE(lookup.found());
REQUIRE(lookup.key() == "43");
std::cerr << lookup << std::endl;
found = tree.search(lookup, "11");
REQUIRE(found);
REQUIRE(lookup.found());
REQUIRE(lookup.key() == "11");
std::cerr << lookup << std::endl;
found = tree.search(lookup, "2");
REQUIRE(found);
REQUIRE(lookup.found());
REQUIRE(lookup.key() == "2");
std::cerr << lookup << std::endl;
found = tree.search(lookup, "17");
REQUIRE(found);
REQUIRE(lookup.found());
REQUIRE(lookup.key() == "17");
std::cerr << lookup << std::endl;
found = tree.search(lookup, "5");
REQUIRE(found);
REQUIRE(lookup.found());
REQUIRE(lookup.key() == "5");
std::cerr << lookup << std::endl;
found = tree.search(lookup, "3");
REQUIRE(found);
REQUIRE(lookup.found());
REQUIRE(lookup.key() == "3");
std::cerr << lookup << std::endl;
found = tree.search(lookup, "foo");
REQUIRE(! found);
REQUIRE(! lookup.found());
REQUIRE(lookup.key() == "foo");
std::cerr << lookup << std::endl;
tree.dotGraph("./tree-dot", /* display */ true);
tree.close();
}
SECTION( "can iterate forward" ) {
btree_node_id_t root_id;
btree_t tree;
// btree_fs_t* storage = new btree_fs_t("/tmp/test_tree_2");
// storage->attach(&tree);
// tree.open();
tree.insert("13", 13);
tree.insert("7", 7);
tree.insert("23", 23);
tree.insert("31", 31);
tree.insert("43", 43);
tree.insert("11", 11);
tree.insert("2", 2);
tree.insert("17", 17);
tree.insert("5", 5);
tree.insert("3", 3);
typedef XTYPENAME btree_t::iterator btree_iterator_t;
btree_iterator_t it = tree.begin();
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "11");
it++;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "13");
it++;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "17");
it++;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "2");
it++;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "23");
it++;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "3");
it++;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "31");
it++;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "43");
it++;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "5");
it++;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "7");
it++;
REQUIRE(! it);
REQUIRE(! ((*it).found()));
for (btree_iterator_t it = tree.begin(); it != tree.end(); ++it)
{
btree_t::lookup_type& l = *it;
REQUIRE(l.found());
REQUIRE(l.node());
btree_t::key_type key = l.key();
btree_t::mapped_type val = l.node()->value(l.pos());
std::cerr << l << std::endl;
}
tree.close();
}
SECTION( "can iterate backward" ) {
btree_node_id_t root_id;
btree_t tree;
// btree_fs_t* storage = new btree_fs_t("/tmp/test_tree_2");
// storage->attach(&tree);
// tree.open();
tree.insert("13", 13);
tree.insert("7", 7);
tree.insert("23", 23);
tree.insert("31", 31);
tree.insert("43", 43);
tree.insert("11", 11);
tree.insert("2", 2);
tree.insert("17", 17);
tree.insert("5", 5);
tree.insert("3", 3);
typedef XTYPENAME btree_t::iterator btree_iterator_t;
btree_iterator_t it = tree.rbegin();
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "7");
it++;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "5");
it++;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "43");
it++;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "31");
it++;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "3");
it++;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "23");
it++;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "2");
it++;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "17");
it++;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "13");
it++;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "11");
it++;
REQUIRE(! it);
REQUIRE(! ((*it).found()));
for (btree_iterator_t it = tree.rbegin(); it != tree.rend(); ++it)
{
btree_t::lookup_type& l = *it;
REQUIRE(l.found());
REQUIRE(l.node());
btree_t::key_type key = l.key();
btree_t::mapped_type val = l.node()->value(l.pos());
std::cerr << l << std::endl;
}
tree.close();
}
SECTION( "can iterate forward and backward simultaneously" ) {
btree_node_id_t root_id;
btree_t tree;
// btree_fs_t* storage = new btree_fs_t("/tmp/test_tree_2");
// storage->attach(&tree);
// tree.open();
tree.insert("13", 13);
tree.insert("7", 7);
tree.insert("23", 23);
tree.insert("31", 31);
tree.insert("43", 43);
tree.insert("11", 11);
tree.insert("2", 2);
tree.insert("17", 17);
tree.insert("5", 5);
tree.insert("3", 3);
typedef XTYPENAME btree_t::iterator btree_iterator_t;
btree_iterator_t it = tree.begin();
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "11");
it++;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "13");
it++;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "17");
it--;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "13");
it--;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "11");
it--;
REQUIRE(! it);
REQUIRE(! ((*it).found()));
tree.close();
}
SECTION( "can iterate forward and backward simultaneously also for a reverse iterator" ) {
btree_node_id_t root_id;
btree_t tree;
// btree_fs_t* storage = new btree_fs_t("/tmp/test_tree_2");
// storage->attach(&tree);
// tree.open();
tree.insert("13", 13);
tree.insert("7", 7);
tree.insert("23", 23);
tree.insert("31", 31);
tree.insert("43", 43);
tree.insert("11", 11);
tree.insert("2", 2);
tree.insert("17", 17);
tree.insert("5", 5);
tree.insert("3", 3);
typedef XTYPENAME btree_t::iterator btree_iterator_t;
btree_iterator_t it = tree.rbegin();
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "7");
it++;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "5");
it++;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "43");
it--;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "5");
it--;
REQUIRE(it);
REQUIRE((*it).found());
REQUIRE((*it).key() == "7");
it--;
REQUIRE(! it);
REQUIRE(! ((*it).found()));
tree.close();
}
}