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/*
* Copyright (C) 2018 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 "src/traced/probes/filesystem/lru_inode_cache.h"
#include <string>
#include <tuple>
#include "protos/perfetto/trace/filesystem/inode_file_map.pbzero.h"
#include "test/gtest_and_gmock.h"
namespace perfetto {
namespace {
using ::testing::Eq;
using ::testing::IsNull;
using ::testing::Pointee;
const std::pair<BlockDeviceID, Inode> key1{0, 0};
const std::pair<BlockDeviceID, Inode> key2{0, 1};
const std::pair<BlockDeviceID, Inode> key3{0, 2};
InodeMapValue val1() {
return InodeMapValue(protos::pbzero::InodeFileMap_Entry_Type_DIRECTORY,
std::set<std::string>{"Value 1"});
}
InodeMapValue val2() {
return InodeMapValue(protos::pbzero::InodeFileMap_Entry_Type_UNKNOWN,
std::set<std::string>{"Value 2"});
}
InodeMapValue val3() {
return InodeMapValue(protos::pbzero::InodeFileMap_Entry_Type_UNKNOWN,
std::set<std::string>{"Value 2"});
}
TEST(LRUInodeCacheTest, Basic) {
LRUInodeCache cache(2);
cache.Insert(key1, val1());
EXPECT_THAT(cache.Get(key1), Pointee(Eq(val1())));
cache.Insert(key2, val2());
EXPECT_THAT(cache.Get(key1), Pointee(Eq(val1())));
EXPECT_THAT(cache.Get(key2), Pointee(Eq(val2())));
cache.Insert(key1, val2());
EXPECT_THAT(cache.Get(key1), Pointee(Eq(val2())));
}
TEST(LRUInodeCacheTest, Overflow) {
LRUInodeCache cache(2);
cache.Insert(key1, val1());
cache.Insert(key2, val2());
EXPECT_THAT(cache.Get(key1), Pointee(Eq(val1())));
EXPECT_THAT(cache.Get(key2), Pointee(Eq(val2())));
cache.Insert(key3, val3());
// key1 is the LRU and should be evicted.
EXPECT_THAT(cache.Get(key1), IsNull());
EXPECT_THAT(cache.Get(key2), Pointee(Eq(val2())));
EXPECT_THAT(cache.Get(key3), Pointee(Eq(val3())));
}
} // namespace
} // namespace perfetto