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/*
* Copyright (c) 2012 Google
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Gabe Black
*/
#include <gtest/gtest.h>
#include <iostream>
#include <sstream>
#include <string>
#include "base/trie.hh"
#include "base/types.hh"
namespace {
static inline uint32_t *ptr(uintptr_t val)
{
return (uint32_t *)val;
}
} // anonymous namespace
class TrieTestData : public testing::Test
{
protected:
typedef Trie<Addr, uint32_t> TrieType;
TrieType trie;
std::string
dumpTrie()
{
std::stringstream ss;
trie.dump("test trie", ss);
return ss.str();
}
};
TEST_F(TrieTestData, Empty)
{
EXPECT_EQ(trie.lookup(0x123456701234567), nullptr) << dumpTrie();
}
TEST_F(TrieTestData, SingleEntry)
{
trie.insert(0x0123456789abcdef, 40, ptr(1));
EXPECT_EQ(trie.lookup(0x123456701234567), nullptr) << dumpTrie();
EXPECT_EQ(trie.lookup(0x123456789ab0000), ptr(1)) << dumpTrie();
}
TEST_F(TrieTestData, TwoOverlappingEntries)
{
trie.insert(0x0123456789abcdef, 40, ptr(1));
trie.insert(0x0123456789abcdef, 36, ptr(2));
EXPECT_EQ(trie.lookup(0x123456700000000), nullptr) << dumpTrie();
EXPECT_EQ(trie.lookup(0x123456789ab0000), ptr(2)) << dumpTrie();
}
TEST_F(TrieTestData, TwoOverlappingEntriesReversed)
{
trie.insert(0x0123456789abcdef, 36, ptr(2));
trie.insert(0x0123456789abcdef, 40, ptr(1));
EXPECT_EQ(trie.lookup(0x123456700000000), nullptr) << dumpTrie();
EXPECT_EQ(trie.lookup(0x123456789ab0000), ptr(2)) << dumpTrie();
}
TEST_F(TrieTestData, TwoIndependentEntries)
{
trie.insert(0x0123456789abcdef, 40, ptr(2));
trie.insert(0x0123456776543210, 40, ptr(1));
EXPECT_EQ(trie.lookup(0x0123456789000000), ptr(2)) << dumpTrie();
EXPECT_EQ(trie.lookup(0x0123456776000000), ptr(1)) << dumpTrie();
EXPECT_EQ(trie.lookup(0x0123456700000000), nullptr) << dumpTrie();
}
TEST_F(TrieTestData, TwoEntries)
{
trie.insert(0x0123456789000000, 40, ptr(4));
trie.insert(0x0123000000000000, 40, ptr(1));
trie.insert(0x0123456780000000, 40, ptr(3));
trie.insert(0x0123456700000000, 40, ptr(2));
EXPECT_EQ(trie.lookup(0x0123000000000000), ptr(1)) << dumpTrie();
EXPECT_EQ(trie.lookup(0x0123456700000000), ptr(2)) << dumpTrie();
EXPECT_EQ(trie.lookup(0x0123456780000000), ptr(3)) << dumpTrie();
EXPECT_EQ(trie.lookup(0x0123456789000000), ptr(4)) << dumpTrie();
}
TEST_F(TrieTestData, RemovingEntries)
{
TrieType::Handle node1, node2;
trie.insert(0x0123456789000000, 40, ptr(4));
trie.insert(0x0123000000000000, 40, ptr(1));
trie.insert(0x0123456780000000, 40, ptr(3));
node1 = trie.insert(0x0123456700000000, 40, ptr(2));
node2 = trie.insert(0x0123456700000000, 32, ptr(10));
EXPECT_EQ(trie.lookup(0x0123000000000000), ptr(1)) << dumpTrie();
EXPECT_EQ(trie.lookup(0x0123456700000000), ptr(10)) << dumpTrie();
EXPECT_EQ(trie.lookup(0x0123456780000000), ptr(10)) << dumpTrie();
EXPECT_EQ(trie.lookup(0x0123456789000000), ptr(10)) << dumpTrie();
trie.remove(node2);
EXPECT_EQ(trie.lookup(0x0123000000000000), ptr(1)) << dumpTrie();
EXPECT_EQ(trie.lookup(0x0123456700000000), ptr(2)) << dumpTrie();
EXPECT_EQ(trie.lookup(0x0123456780000000), ptr(3)) << dumpTrie();
EXPECT_EQ(trie.lookup(0x0123456789000000), ptr(4)) << dumpTrie();
trie.remove(node1);
EXPECT_EQ(trie.lookup(0x0123000000000000), ptr(1)) << dumpTrie();
EXPECT_EQ(trie.lookup(0x0123456700000000), nullptr) << dumpTrie();
EXPECT_EQ(trie.lookup(0x0123456780000000), ptr(3)) << dumpTrie();
EXPECT_EQ(trie.lookup(0x0123456789000000), ptr(4)) << dumpTrie();
}
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