112 lines
2.6 KiB
C++
112 lines
2.6 KiB
C++
// Copyright 2023 Memgraph Ltd.
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//
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// Use of this software is governed by the Business Source License
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// included in the file licenses/BSL.txt; by using this file, you agree to be bound by the terms of the Business Source
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// License, and you may not use this file except in compliance with the Business Source License.
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//
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// As of the Change Date specified in that file, in accordance with
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// the Business Source License, use of this software will be governed
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// by the Apache License, Version 2.0, included in the file
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// licenses/APL.txt.
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#include "utils/lru_cache.hpp"
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#include <optional>
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#include "gtest/gtest.h"
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TEST(LRUCacheTest, BasicTest) {
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memgraph::utils::LRUCache<int, int> cache(2);
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cache.put(1, 1);
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cache.put(2, 2);
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std::optional<int> value;
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value = cache.get(1);
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EXPECT_TRUE(value.has_value());
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EXPECT_EQ(value.value(), 1);
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cache.put(3, 3);
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value = cache.get(2);
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EXPECT_FALSE(value.has_value());
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cache.put(4, 4);
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value = cache.get(1);
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EXPECT_FALSE(value.has_value());
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value = cache.get(3);
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EXPECT_TRUE(value.has_value());
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EXPECT_EQ(value.value(), 3);
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value = cache.get(4);
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EXPECT_TRUE(value.has_value());
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EXPECT_EQ(value.value(), 4);
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EXPECT_EQ(cache.size(), 2);
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}
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TEST(LRUCacheTest, DuplicatePutTest) {
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memgraph::utils::LRUCache<int, int> cache(2);
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cache.put(1, 1);
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cache.put(2, 2);
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cache.put(1, 10);
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std::optional<int> value;
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value = cache.get(1);
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EXPECT_TRUE(value.has_value());
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EXPECT_EQ(value.value(), 10);
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value = cache.get(2);
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EXPECT_TRUE(value.has_value());
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EXPECT_EQ(value.value(), 2);
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}
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TEST(LRUCacheTest, ResizeTest) {
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memgraph::utils::LRUCache<int, int> cache(2);
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cache.put(1, 1);
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cache.put(2, 2);
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cache.put(3, 3);
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std::optional<int> value;
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value = cache.get(1);
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EXPECT_FALSE(value.has_value());
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value = cache.get(2);
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EXPECT_TRUE(value.has_value());
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EXPECT_EQ(value.value(), 2);
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value = cache.get(3);
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EXPECT_TRUE(value.has_value());
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EXPECT_EQ(value.value(), 3);
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}
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TEST(LRUCacheTest, EmptyCacheTest) {
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memgraph::utils::LRUCache<int, int> cache(2);
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std::optional<int> value;
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value = cache.get(1);
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EXPECT_FALSE(value.has_value());
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cache.put(1, 1);
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value = cache.get(1);
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EXPECT_TRUE(value.has_value());
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EXPECT_EQ(value.value(), 1);
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}
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TEST(LRUCacheTest, LargeCacheTest) {
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const int CACHE_SIZE = 10000;
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memgraph::utils::LRUCache<int, int> cache(CACHE_SIZE);
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std::optional<int> value;
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for (int i = 0; i < CACHE_SIZE; i++) {
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value = cache.get(i);
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EXPECT_FALSE(value.has_value());
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cache.put(i, i);
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}
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for (int i = 0; i < CACHE_SIZE; i++) {
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value = cache.get(i);
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EXPECT_TRUE(value.has_value());
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EXPECT_EQ(value.value(), i);
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}
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}
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