LatinIME/native/jni/tests/dictionary/utils/trie_map_test.cpp

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/*
* Copyright (C) 2014 The Android Open Source Project
*
* 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.
*/
#include "dictionary/utils/trie_map.h"
#include <gtest/gtest.h>
#include <algorithm>
#include <cstdlib>
#include <functional>
#include <map>
#include <random>
#include <unordered_map>
namespace latinime {
namespace {
TEST(TrieMapTest, TestSetAndGet) {
TrieMap trieMap;
trieMap.putRoot(10, 10);
EXPECT_EQ(10ull, trieMap.getRoot(10).mValue);
trieMap.putRoot(0x10A, 10);
EXPECT_EQ(10ull, trieMap.getRoot(10).mValue);
EXPECT_EQ(10ull, trieMap.getRoot(0x10A).mValue);
trieMap.putRoot(10, 1000);
EXPECT_EQ(1000ull, trieMap.getRoot(10).mValue);
trieMap.putRoot(11, 1000);
EXPECT_EQ(1000ull, trieMap.getRoot(11).mValue);
const int next = trieMap.getNextLevelBitmapEntryIndex(10);
EXPECT_EQ(1000ull, trieMap.getRoot(10).mValue);
trieMap.put(9, 9, next);
EXPECT_EQ(9ull, trieMap.get(9, next).mValue);
EXPECT_FALSE(trieMap.get(11, next).mIsValid);
trieMap.putRoot(0, 0xFFFFFFFFFull);
EXPECT_EQ(0xFFFFFFFFFull, trieMap.getRoot(0).mValue);
}
TEST(TrieMapTest, TestRemove) {
TrieMap trieMap;
trieMap.putRoot(10, 10);
EXPECT_EQ(10ull, trieMap.getRoot(10).mValue);
EXPECT_TRUE(trieMap.remove(10, trieMap.getRootBitmapEntryIndex()));
EXPECT_FALSE(trieMap.getRoot(10).mIsValid);
for (const auto &element : trieMap.getEntriesInRootLevel()) {
(void)element; // not used
EXPECT_TRUE(false);
}
EXPECT_TRUE(trieMap.putRoot(10, 0x3FFFFF));
EXPECT_FALSE(trieMap.remove(11, trieMap.getRootBitmapEntryIndex()))
<< "Should fail if the key does not exist.";
EXPECT_EQ(0x3FFFFFull, trieMap.getRoot(10).mValue);
trieMap.putRoot(12, 11);
const int nextLevel = trieMap.getNextLevelBitmapEntryIndex(10);
trieMap.put(10, 10, nextLevel);
EXPECT_EQ(0x3FFFFFull, trieMap.getRoot(10).mValue);
EXPECT_EQ(10ull, trieMap.get(10, nextLevel).mValue);
EXPECT_TRUE(trieMap.remove(10, trieMap.getRootBitmapEntryIndex()));
const TrieMap::Result result = trieMap.getRoot(10);
EXPECT_FALSE(result.mIsValid);
EXPECT_EQ(TrieMap::INVALID_INDEX, result.mNextLevelBitmapEntryIndex);
EXPECT_EQ(11ull, trieMap.getRoot(12).mValue);
EXPECT_TRUE(trieMap.putRoot(S_INT_MAX, 0xFFFFFFFFFull));
EXPECT_TRUE(trieMap.remove(S_INT_MAX, trieMap.getRootBitmapEntryIndex()));
}
TEST(TrieMapTest, TestSetAndGetLarge) {
static const int ELEMENT_COUNT = 200000;
TrieMap trieMap;
for (int i = 0; i < ELEMENT_COUNT; ++i) {
EXPECT_TRUE(trieMap.putRoot(i, i));
}
for (int i = 0; i < ELEMENT_COUNT; ++i) {
EXPECT_EQ(static_cast<uint64_t>(i), trieMap.getRoot(i).mValue);
}
}
TEST(TrieMapTest, TestRandSetAndGetLarge) {
static const int ELEMENT_COUNT = 100000;
TrieMap trieMap;
std::unordered_map<int, uint64_t> testKeyValuePairs;
// Use the uniform integer distribution [S_INT_MIN, S_INT_MAX].
std::uniform_int_distribution<int> keyDistribution(S_INT_MIN, S_INT_MAX);
auto keyRandomNumberGenerator = std::bind(keyDistribution, std::mt19937());
// Use the uniform distribution [0, TrieMap::MAX_VALUE].
std::uniform_int_distribution<uint64_t> valueDistribution(0, TrieMap::MAX_VALUE);
auto valueRandomNumberGenerator = std::bind(valueDistribution, std::mt19937());
for (int i = 0; i < ELEMENT_COUNT; ++i) {
const int key = keyRandomNumberGenerator();
const uint64_t value = valueRandomNumberGenerator();
EXPECT_TRUE(trieMap.putRoot(key, value)) << key << " " << value;
testKeyValuePairs[key] = value;
}
for (const auto &v : testKeyValuePairs) {
EXPECT_EQ(v.second, trieMap.getRoot(v.first).mValue);
}
}
TEST(TrieMapTest, TestMultiLevel) {
static const int FIRST_LEVEL_ENTRY_COUNT = 10000;
static const int SECOND_LEVEL_ENTRY_COUNT = 20000;
static const int THIRD_LEVEL_ENTRY_COUNT = 40000;
TrieMap trieMap;
std::vector<int> firstLevelKeys;
std::map<int, uint64_t> firstLevelEntries;
std::vector<std::pair<int, int>> secondLevelKeys;
std::map<int, std::map<int, uint64_t>> twoLevelMap;
std::map<int, std::map<int, std::map<int, uint64_t>>> threeLevelMap;
// Use the uniform integer distribution [0, S_INT_MAX].
std::uniform_int_distribution<int> distribution(0, S_INT_MAX);
auto keyRandomNumberGenerator = std::bind(distribution, std::mt19937());
auto randomNumberGeneratorForKeySelection = std::bind(distribution, std::mt19937());
// Use the uniform distribution [0, TrieMap::MAX_VALUE].
std::uniform_int_distribution<uint64_t> valueDistribution(0, TrieMap::MAX_VALUE);
auto valueRandomNumberGenerator = std::bind(valueDistribution, std::mt19937());
for (int i = 0; i < FIRST_LEVEL_ENTRY_COUNT; ++i) {
const int key = keyRandomNumberGenerator();
const uint64_t value = valueRandomNumberGenerator();
EXPECT_TRUE(trieMap.putRoot(key, value));
firstLevelKeys.push_back(key);
firstLevelEntries[key] = value;
}
for (int i = 0; i < SECOND_LEVEL_ENTRY_COUNT; ++i) {
const int key = keyRandomNumberGenerator();
const uint64_t value = valueRandomNumberGenerator();
const int firstLevelKey =
firstLevelKeys[randomNumberGeneratorForKeySelection() % FIRST_LEVEL_ENTRY_COUNT];
const int nextLevelBitmapEntryIndex = trieMap.getNextLevelBitmapEntryIndex(firstLevelKey);
EXPECT_NE(TrieMap::INVALID_INDEX, nextLevelBitmapEntryIndex);
EXPECT_TRUE(trieMap.put(key, value, nextLevelBitmapEntryIndex));
secondLevelKeys.push_back(std::make_pair(firstLevelKey, key));
twoLevelMap[firstLevelKey][key] = value;
}
for (int i = 0; i < THIRD_LEVEL_ENTRY_COUNT; ++i) {
const int key = keyRandomNumberGenerator();
const uint64_t value = valueRandomNumberGenerator();
const std::pair<int, int> secondLevelKey =
secondLevelKeys[randomNumberGeneratorForKeySelection() % SECOND_LEVEL_ENTRY_COUNT];
const int secondLevel = trieMap.getNextLevelBitmapEntryIndex(secondLevelKey.first);
EXPECT_NE(TrieMap::INVALID_INDEX, secondLevel);
const int thirdLevel = trieMap.getNextLevelBitmapEntryIndex(
secondLevelKey.second, secondLevel);
EXPECT_NE(TrieMap::INVALID_INDEX, thirdLevel);
EXPECT_TRUE(trieMap.put(key, value, thirdLevel));
threeLevelMap[secondLevelKey.first][secondLevelKey.second][key] = value;
}
for (const auto &firstLevelEntry : firstLevelEntries) {
EXPECT_EQ(firstLevelEntry.second, trieMap.getRoot(firstLevelEntry.first).mValue);
}
for (const auto &firstLevelEntry : twoLevelMap) {
const int secondLevel = trieMap.getNextLevelBitmapEntryIndex(firstLevelEntry.first);
EXPECT_NE(TrieMap::INVALID_INDEX, secondLevel);
for (const auto &secondLevelEntry : firstLevelEntry.second) {
EXPECT_EQ(secondLevelEntry.second,
trieMap.get(secondLevelEntry.first, secondLevel).mValue);
}
}
for (const auto &firstLevelEntry : threeLevelMap) {
const int secondLevel = trieMap.getNextLevelBitmapEntryIndex(firstLevelEntry.first);
EXPECT_NE(TrieMap::INVALID_INDEX, secondLevel);
for (const auto &secondLevelEntry : firstLevelEntry.second) {
const int thirdLevel =
trieMap.getNextLevelBitmapEntryIndex(secondLevelEntry.first, secondLevel);
EXPECT_NE(TrieMap::INVALID_INDEX, thirdLevel);
for (const auto &thirdLevelEntry : secondLevelEntry.second) {
EXPECT_EQ(thirdLevelEntry.second,
trieMap.get(thirdLevelEntry.first, thirdLevel).mValue);
}
}
}
// Iteration
for (const auto &firstLevelEntry : trieMap.getEntriesInRootLevel()) {
EXPECT_EQ(trieMap.getRoot(firstLevelEntry.key()).mValue, firstLevelEntry.value());
EXPECT_EQ(firstLevelEntries[firstLevelEntry.key()], firstLevelEntry.value());
firstLevelEntries.erase(firstLevelEntry.key());
for (const auto &secondLevelEntry : firstLevelEntry.getEntriesInNextLevel()) {
EXPECT_EQ(twoLevelMap[firstLevelEntry.key()][secondLevelEntry.key()],
secondLevelEntry.value());
twoLevelMap[firstLevelEntry.key()].erase(secondLevelEntry.key());
for (const auto &thirdLevelEntry : secondLevelEntry.getEntriesInNextLevel()) {
EXPECT_EQ(threeLevelMap[firstLevelEntry.key()][secondLevelEntry.key()]
[thirdLevelEntry.key()], thirdLevelEntry.value());
threeLevelMap[firstLevelEntry.key()][secondLevelEntry.key()].erase(
thirdLevelEntry.key());
}
}
}
// Ensure all entries have been traversed.
EXPECT_TRUE(firstLevelEntries.empty());
for (const auto &secondLevelEntry : twoLevelMap) {
EXPECT_TRUE(secondLevelEntry.second.empty());
}
for (const auto &secondLevelEntry : threeLevelMap) {
for (const auto &thirdLevelEntry : secondLevelEntry.second) {
EXPECT_TRUE(thirdLevelEntry.second.empty());
}
}
}
TEST(TrieMapTest, TestIteration) {
static const int ELEMENT_COUNT = 200000;
TrieMap trieMap;
std::unordered_map<int, uint64_t> testKeyValuePairs;
// Use the uniform integer distribution [S_INT_MIN, S_INT_MAX].
std::uniform_int_distribution<int> keyDistribution(S_INT_MIN, S_INT_MAX);
auto keyRandomNumberGenerator = std::bind(keyDistribution, std::mt19937());
// Use the uniform distribution [0, TrieMap::MAX_VALUE].
std::uniform_int_distribution<uint64_t> valueDistribution(0, TrieMap::MAX_VALUE);
auto valueRandomNumberGenerator = std::bind(valueDistribution, std::mt19937());
for (int i = 0; i < ELEMENT_COUNT; ++i) {
const int key = keyRandomNumberGenerator();
const uint64_t value = valueRandomNumberGenerator();
EXPECT_TRUE(trieMap.putRoot(key, value));
testKeyValuePairs[key] = value;
}
for (const auto &entry : trieMap.getEntriesInRootLevel()) {
EXPECT_EQ(trieMap.getRoot(entry.key()).mValue, entry.value());
EXPECT_EQ(testKeyValuePairs[entry.key()], entry.value());
testKeyValuePairs.erase(entry.key());
}
EXPECT_TRUE(testKeyValuePairs.empty());
}
} // namespace
} // namespace latinime