138 lines
3.9 KiB
C++
138 lines
3.9 KiB
C++
/*
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* Copyright (C) 2025 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <gtest/gtest.h>
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#include <utils/MonotonicRingMap.h>
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using namespace utils;
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TEST(MonotonicRingMap, Empty) {
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MonotonicRingMap<4, uint64_t, uint64_t> map;
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EXPECT_TRUE(map.empty());
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EXPECT_FALSE(map.full());
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EXPECT_EQ(0, map.size());
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EXPECT_EQ(4, map.capacity());
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EXPECT_EQ(nullptr, map.find(100));
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}
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TEST(MonotonicRingMap, Insert) {
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MonotonicRingMap<4, uint64_t, uint64_t> map;
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map.insert(10, 100);
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map.insert(20, 200);
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EXPECT_EQ(2, map.size());
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EXPECT_EQ(10, map.front().first);
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EXPECT_EQ(100, map.front().second);
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EXPECT_EQ(20, map.back().first);
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EXPECT_EQ(200, map.back().second);
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}
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TEST(MonotonicRingMap, Find) {
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MonotonicRingMap<4, uint64_t, uint64_t> map;
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map.insert(10, 100);
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map.insert(20, 200);
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map.insert(30, 300);
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const uint64_t* v1 = map.find(10);
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ASSERT_NE(nullptr, v1);
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EXPECT_EQ(100, *v1);
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const uint64_t* v2 = map.find(20);
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ASSERT_NE(nullptr, v2);
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EXPECT_EQ(200, *v2);
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const uint64_t* v3 = map.find(30);
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ASSERT_NE(nullptr, v3);
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EXPECT_EQ(300, *v3);
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EXPECT_EQ(nullptr, map.find(5)); // smaller than min
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EXPECT_EQ(nullptr, map.find(25)); // in between
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EXPECT_EQ(nullptr, map.find(35)); // larger than max
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}
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TEST(MonotonicRingMap, Full) {
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MonotonicRingMap<4, uint64_t, uint64_t> map;
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map.insert(10, 100);
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map.insert(20, 200);
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map.insert(30, 300);
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map.insert(40, 400);
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EXPECT_TRUE(map.full());
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EXPECT_EQ(4, map.size());
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EXPECT_EQ(10, map.front().first);
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EXPECT_EQ(40, map.back().first);
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// Now insert a new element, which should overwrite the oldest (10)
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map.insert(50, 500);
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EXPECT_TRUE(map.full());
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EXPECT_EQ(4, map.size());
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EXPECT_EQ(20, map.front().first); // 20 is the new oldest
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EXPECT_EQ(50, map.back().first);
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EXPECT_EQ(nullptr, map.find(10));
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ASSERT_NE(nullptr, map.find(20));
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ASSERT_NE(nullptr, map.find(50));
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}
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TEST(MonotonicRingMap, FindAfterWrapAround) {
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MonotonicRingMap<4, uint64_t, uint64_t> map;
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map.insert(10, 100);
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map.insert(20, 200);
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map.insert(30, 300);
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map.insert(40, 400);
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map.insert(50, 500); // oldest is 20, head is at index 1
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EXPECT_EQ(20, map.front().first);
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EXPECT_EQ(50, map.back().first);
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ASSERT_NE(nullptr, map.find(20));
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ASSERT_NE(nullptr, map.find(30));
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ASSERT_NE(nullptr, map.find(40));
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ASSERT_NE(nullptr, map.find(50));
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map.insert(60, 600); // oldest is 30, head is at index 2
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EXPECT_EQ(30, map.front().first);
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EXPECT_EQ(60, map.back().first);
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EXPECT_EQ(nullptr, map.find(20));
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ASSERT_NE(nullptr, map.find(30));
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ASSERT_NE(nullptr, map.find(60));
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map.insert(70, 700); // oldest is 40, head is at index 3
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map.insert(80, 800); // oldest is 50, head is at index 0
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EXPECT_EQ(50, map.front().first);
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EXPECT_EQ(80, map.back().first);
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EXPECT_EQ(nullptr, map.find(40));
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ASSERT_NE(nullptr, map.find(50));
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ASSERT_NE(nullptr, map.find(60));
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ASSERT_NE(nullptr, map.find(70));
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ASSERT_NE(nullptr, map.find(80));
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}
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#if !defined(NDEBUG) && defined(GTEST_HAS_DEATH_TEST)
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TEST(MonotonicRingMap, MonotonicityDeathTest) {
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MonotonicRingMap<4, uint64_t, uint64_t> map;
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map.insert(10, 100);
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map.insert(20, 200);
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EXPECT_DEATH(map.insert(15, 150), "");
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}
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#endif
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