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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stddef.h>
#include <memory>
#include "base/files/file_util.h"
#include "base/files/scoped_temp_dir.h"
#include "base/functional/bind.h"
#include "base/run_loop.h"
#include "base/time/time.h"
#include "chrome/browser/ash/settings/scoped_testing_cros_settings.h"
#include "chrome/browser/ash/settings/stub_cros_settings_provider.h"
#include "chrome/browser/extensions/updater/chromeos_extension_cache_delegate.h"
#include "chrome/browser/extensions/updater/extension_cache_impl.h"
#include "chrome/browser/extensions/updater/local_extension_cache.h"
#include "chromeos/ash/components/settings/cros_settings_names.h"
#include "content/public/test/browser_task_environment.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace extensions {
namespace {
const char kTestExtensionId1[] = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
const char kTestExtensionId2[] = "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb";
const char kTestExtensionId3[] = "cccccccccccccccccccccccccccccccc";
// 2 megabytes are a little less than 2 100 000 bytes, so the third extension
// will not be kept.
const size_t kMaxCacheSize = 2 * 1024 * 1024;
const size_t kExtensionSize1 = 1000 * 1000;
const size_t kExtensionSize2 = 1000 * 1000;
const size_t kExtensionSize3 = 100 * 1000;
static void CreateFile(const base::FilePath& file,
size_t size,
const base::Time& timestamp) {
const std::string data(size, 0);
EXPECT_TRUE(base::WriteFile(file, data));
EXPECT_TRUE(base::TouchFile(file, timestamp, timestamp));
}
static base::FilePath CreateExtensionFile(const base::FilePath& dir,
const std::string& id,
const std::string& version,
size_t size,
const base::Time& timestamp) {
const base::FilePath filename = dir.Append(
LocalExtensionCache::ExtensionFileName(id, version, "" /* hash */));
CreateFile(filename, size, timestamp);
return filename;
}
} // namespace
class ExtensionCacheTest : public testing::Test {
protected:
content::BrowserTaskEnvironment task_environment_;
ash::ScopedTestingCrosSettings scoped_testing_cros_settings_;
};
TEST_F(ExtensionCacheTest, SizePolicy) {
scoped_testing_cros_settings_.device_settings()->SetInteger(
ash::kExtensionCacheSize, kMaxCacheSize);
// Create and initialize local cache.
const base::Time now = base::Time::Now();
base::ScopedTempDir cache_dir;
ASSERT_TRUE(cache_dir.CreateUniqueTempDir());
const base::FilePath cache_path = cache_dir.GetPath();
CreateFile(cache_path.Append(LocalExtensionCache::kCacheReadyFlagFileName), 0,
now);
// The extension cache only has enough space for two of the three extensions.
const base::FilePath file1 =
CreateExtensionFile(cache_path, kTestExtensionId1, "1.0", kExtensionSize1,
now - base::Seconds(1));
const base::FilePath file2 =
CreateExtensionFile(cache_path, kTestExtensionId2, "2.0", kExtensionSize2,
now - base::Seconds(2));
const base::FilePath file3 =
CreateExtensionFile(cache_path, kTestExtensionId3, "3.0", kExtensionSize3,
now - base::Seconds(3));
ExtensionCacheImpl cache_impl(
std::make_unique<ChromeOSExtensionCacheDelegate>(cache_path));
std::unique_ptr<base::RunLoop> run_loop(new base::RunLoop);
cache_impl.Start(run_loop->QuitClosure());
run_loop->Run();
run_loop = std::make_unique<base::RunLoop>();
cache_impl.Shutdown(run_loop->QuitClosure());
run_loop->Run();
EXPECT_TRUE(base::PathExists(file1));
EXPECT_TRUE(base::PathExists(file2));
EXPECT_FALSE(base::PathExists(file3));
}
} // namespace extensions
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