breadcrumb_persistent_storage_manager_unittest.cc

// Copyright 2021 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/breadcrumbs/core/breadcrumb_persistent_storage_manager.h"

#include <memory>
#include <string>
#include <vector>

#include "base/files/file.h"
#include "base/files/file_util.h"
#include "base/files/scoped_temp_dir.h"
#include "base/run_loop.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/strings/stringprintf.h"
#include "base/test/task_environment.h"
#include "components/breadcrumbs/core/breadcrumb_manager_keyed_service.h"
#include "components/breadcrumbs/core/breadcrumb_persistent_storage_util.h"
#include "testing/platform_test.h"

namespace breadcrumbs {

namespace {

// Estimate number of events too large to fit in the persisted file. 6 is based
// on the event string format which is slightly smaller than each event.
constexpr unsigned long kEventCountTooManyForPersisting = …;

// Validates that the events in `persisted_events` are contiguous and that the
// `last_logged_event` matches the last persisted event.
bool ValidatePersistedEvents(const std::string& last_logged_event,
                             std::vector<std::string> persisted_events) { … }

}  // namespace

class BreadcrumbPersistentStorageManagerTest : public PlatformTest { … };

// Ensures that logged events are persisted.
TEST_F(BreadcrumbPersistentStorageManagerTest, PersistEvents) { … }

// Ensures that persisted events do not grow too large when events are logged
// very quickly one after the other.
TEST_F(BreadcrumbPersistentStorageManagerTest, PersistLargeBucket) { … }

// Ensures that persisted events do not grow too large for events logged a few
// seconds apart from each other.
TEST_F(BreadcrumbPersistentStorageManagerTest, PersistManyEventsOverTime) { … }

// Ensures that events are read correctly if the persisted file becomes
// corrupted by losing the EOF token or if kPersistedFilesizeInBytes is reduced.
TEST_F(BreadcrumbPersistentStorageManagerTest,
       GetStoredEventsAfterFilesizeReduction) { … }

// Ensures that the breadcrumbs file is deleted if metrics consent is not
// provided, and recreated if it is re-enabled.
TEST_F(BreadcrumbPersistentStorageManagerTest, ChangeMetricsConsent) { … }

}  // namespace breadcrumbs
chromium/components/breadcrumbs/core/breadcrumb_persistent_storage_manager_unittest.cc
