1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "src/traced/probes/filesystem/lru_inode_cache.h" 18 19 #include "gmock/gmock.h" 20 #include "gtest/gtest.h" 21 22 #include <string> 23 #include <tuple> 24 25 namespace perfetto { 26 27 namespace { 28 29 using ::testing::Eq; 30 using ::testing::IsNull; 31 using ::testing::Pointee; 32 33 const std::pair<BlockDeviceID, Inode> key1{0, 0}; 34 const std::pair<BlockDeviceID, Inode> key2{0, 1}; 35 const std::pair<BlockDeviceID, Inode> key3{0, 2}; 36 37 InodeMapValue val1() { 38 return InodeMapValue(protos::pbzero::InodeFileMap_Entry_Type_DIRECTORY, 39 std::set<std::string>{"Value 1"}); 40 } 41 42 InodeMapValue val2() { 43 return InodeMapValue(protos::pbzero::InodeFileMap_Entry_Type_UNKNOWN, 44 std::set<std::string>{"Value 2"}); 45 } 46 47 InodeMapValue val3() { 48 return InodeMapValue(protos::pbzero::InodeFileMap_Entry_Type_UNKNOWN, 49 std::set<std::string>{"Value 2"}); 50 } 51 52 TEST(LRUInodeCacheTest, Basic) { 53 LRUInodeCache cache(2); 54 cache.Insert(key1, val1()); 55 EXPECT_THAT(cache.Get(key1), Pointee(Eq(val1()))); 56 cache.Insert(key2, val2()); 57 EXPECT_THAT(cache.Get(key1), Pointee(Eq(val1()))); 58 EXPECT_THAT(cache.Get(key2), Pointee(Eq(val2()))); 59 cache.Insert(key1, val2()); 60 EXPECT_THAT(cache.Get(key1), Pointee(Eq(val2()))); 61 } 62 63 TEST(LRUInodeCacheTest, Overflow) { 64 LRUInodeCache cache(2); 65 cache.Insert(key1, val1()); 66 cache.Insert(key2, val2()); 67 EXPECT_THAT(cache.Get(key1), Pointee(Eq(val1()))); 68 EXPECT_THAT(cache.Get(key2), Pointee(Eq(val2()))); 69 cache.Insert(key3, val3()); 70 // key1 is the LRU and should be evicted. 71 EXPECT_THAT(cache.Get(key1), IsNull()); 72 EXPECT_THAT(cache.Get(key2), Pointee(Eq(val2()))); 73 EXPECT_THAT(cache.Get(key3), Pointee(Eq(val3()))); 74 } 75 76 } // namespace 77 } // namespace perfetto 78
