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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/persistent_cache/persistent_cache_collection.h"
#include "base/containers/span.h"
#include "base/files/scoped_temp_dir.h"
#include "components/persistent_cache/backend_params_manager.h"
#include "components/persistent_cache/entry.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace persistent_cache {
namespace {
TEST(PersistentCacheCollection, Retrieval) {
base::ScopedTempDir temp_dir;
CHECK(temp_dir.CreateUniqueTempDir());
PersistentCacheCollection collection(
std::make_unique<BackendParamsManager>(temp_dir.GetPath()));
constexpr char first_cache_id[] = "first_cache_id";
constexpr char second_cache_id[] = "second_cache_id";
constexpr char first_key[] = "first_key";
constexpr char second_key[] = "second_key";
constexpr const char first_content[] = "first_content";
// At first there is nothing in the collection.
EXPECT_EQ(collection.Find(first_cache_id, first_key), nullptr);
EXPECT_EQ(collection.Find(first_cache_id, second_key), nullptr);
EXPECT_EQ(collection.Find(second_cache_id, first_key), nullptr);
EXPECT_EQ(collection.Find(second_cache_id, second_key), nullptr);
// Inserting for a certain cache id allows retrieval for this id and this id
// only.
collection.Insert(first_cache_id, first_key,
base::byte_span_from_cstring(first_content));
auto entry = collection.Find(first_cache_id, first_key);
ASSERT_NE(entry, nullptr);
EXPECT_EQ(entry->GetContentSpan(),
base::byte_span_from_cstring(first_content));
EXPECT_EQ(collection.Find(second_cache_id, first_key), nullptr);
}
TEST(PersistentCacheCollection, RetrievalAfterClear) {
base::ScopedTempDir temp_dir;
CHECK(temp_dir.CreateUniqueTempDir());
PersistentCacheCollection collection(
std::make_unique<BackendParamsManager>(temp_dir.GetPath()));
std::string first_cache_id = "first_cache_id";
std::string first_key = "first_key";
constexpr const char first_content[] = "first_content";
// Test basic retrieval.
EXPECT_EQ(collection.Find(first_cache_id, first_key), nullptr);
collection.Insert(first_cache_id, first_key,
base::byte_span_from_cstring(first_content));
EXPECT_NE(collection.Find(first_cache_id, first_key), nullptr);
// Retrieval still works after clear because data persistence is unnafected by
// lifetime of PersistentCache instances.
collection.ClearForTesting();
EXPECT_NE(collection.Find(first_cache_id, first_key), nullptr);
}
TEST(PersistentCacheCollection, DeleteAllFiles) {
base::ScopedTempDir temp_dir;
CHECK(temp_dir.CreateUniqueTempDir());
PersistentCacheCollection collection(
std::make_unique<BackendParamsManager>(temp_dir.GetPath()));
std::string first_cache_id = "first_cache_id";
std::string first_key = "first_key";
constexpr const char first_content[] = "first_content";
// Inserting an entry makes it available.
collection.Insert(first_cache_id, first_key,
base::byte_span_from_cstring(first_content));
EXPECT_NE(collection.Find(first_cache_id, first_key), nullptr);
collection.DeleteAllFiles();
// After deletion the content is not available anymore.
EXPECT_EQ(collection.Find(first_cache_id, first_key), nullptr);
}
} // namespace
} // namespace persistent_cache
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