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// Copyright 2016 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/metrics/data_use_tracker.h"
#include "base/time/time.h"
#include "base/values.h"
#include "components/metrics/metrics_pref_names.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/testing_pref_service.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace metrics {
namespace {
const char kTodayStr[] = "2016-03-16";
const char kYesterdayStr[] = "2016-03-15";
const char kExpiredDateStr1[] = "2016-03-09";
const char kExpiredDateStr2[] = "2016-03-01";
class TestDataUsePrefService : public TestingPrefServiceSimple {
public:
TestDataUsePrefService() { DataUseTracker::RegisterPrefs(registry()); }
TestDataUsePrefService(const TestDataUsePrefService&) = delete;
TestDataUsePrefService& operator=(const TestDataUsePrefService&) = delete;
void ClearDataUsePrefs() {
ClearPref(metrics::prefs::kUserCellDataUse);
ClearPref(metrics::prefs::kUmaCellDataUse);
}
};
class FakeDataUseTracker : public DataUseTracker {
public:
FakeDataUseTracker(PrefService* local_state) : DataUseTracker(local_state) {}
FakeDataUseTracker(const FakeDataUseTracker&) = delete;
FakeDataUseTracker& operator=(const FakeDataUseTracker&) = delete;
base::Time GetCurrentMeasurementDate() const override {
base::Time today_for_test;
EXPECT_TRUE(base::Time::FromUTCString(kTodayStr, &today_for_test));
return today_for_test;
}
std::string GetCurrentMeasurementDateAsString() const override {
return kTodayStr;
}
};
// Sets up data usage prefs with mock values so that UMA traffic is above the
// allowed ratio.
void SetPrefTestValuesOverRatio(PrefService* local_state) {
base::Value::Dict user_pref_dict;
user_pref_dict.Set(kTodayStr, 2 * 100 * 1024);
user_pref_dict.Set(kYesterdayStr, 2 * 100 * 1024);
user_pref_dict.Set(kExpiredDateStr1, 2 * 100 * 1024);
user_pref_dict.Set(kExpiredDateStr2, 2 * 100 * 1024);
local_state->SetDict(prefs::kUserCellDataUse, std::move(user_pref_dict));
base::Value::Dict uma_pref_dict;
uma_pref_dict.Set(kTodayStr, 50 * 1024);
uma_pref_dict.Set(kYesterdayStr, 50 * 1024);
uma_pref_dict.Set(kExpiredDateStr1, 50 * 1024);
uma_pref_dict.Set(kExpiredDateStr2, 50 * 1024);
local_state->SetDict(prefs::kUmaCellDataUse, std::move(uma_pref_dict));
}
// Sets up data usage prefs with mock values which can be valid.
void SetPrefTestValuesValidRatio(PrefService* local_state) {
base::Value::Dict user_pref_dict;
user_pref_dict.Set(kTodayStr, 100 * 100 * 1024);
user_pref_dict.Set(kYesterdayStr, 100 * 100 * 1024);
user_pref_dict.Set(kExpiredDateStr1, 100 * 100 * 1024);
user_pref_dict.Set(kExpiredDateStr2, 100 * 100 * 1024);
local_state->SetDict(prefs::kUserCellDataUse, std::move(user_pref_dict));
// Should be 4% of user traffic
base::Value::Dict uma_pref_dict;
uma_pref_dict.Set(kTodayStr, 4 * 100 * 1024);
uma_pref_dict.Set(kYesterdayStr, 4 * 100 * 1024);
uma_pref_dict.Set(kExpiredDateStr1, 4 * 100 * 1024);
uma_pref_dict.Set(kExpiredDateStr2, 4 * 100 * 1024);
local_state->SetDict(prefs::kUmaCellDataUse, std::move(uma_pref_dict));
}
} // namespace
TEST(DataUseTrackerTest, CheckUpdateUsagePref) {
TestDataUsePrefService local_state;
FakeDataUseTracker data_use_tracker(&local_state);
local_state.ClearDataUsePrefs();
data_use_tracker.UpdateMetricsUsagePrefsInternal(2 * 100 * 1024, true, false);
EXPECT_EQ(2 * 100 * 1024,
local_state.GetDict(prefs::kUserCellDataUse).FindInt(kTodayStr));
EXPECT_FALSE(local_state.GetDict(prefs::kUmaCellDataUse).FindInt(kTodayStr));
data_use_tracker.UpdateMetricsUsagePrefsInternal(100 * 1024, true, true);
EXPECT_EQ(3 * 100 * 1024,
local_state.GetDict(prefs::kUserCellDataUse).FindInt(kTodayStr));
EXPECT_EQ(100 * 1024,
local_state.GetDict(prefs::kUmaCellDataUse).FindInt(kTodayStr));
}
TEST(DataUseTrackerTest, CheckRemoveExpiredEntries) {
TestDataUsePrefService local_state;
FakeDataUseTracker data_use_tracker(&local_state);
local_state.ClearDataUsePrefs();
SetPrefTestValuesOverRatio(&local_state);
data_use_tracker.RemoveExpiredEntries();
EXPECT_FALSE(
local_state.GetDict(prefs::kUserCellDataUse).FindInt(kExpiredDateStr1));
EXPECT_FALSE(
local_state.GetDict(prefs::kUmaCellDataUse).FindInt(kExpiredDateStr1));
EXPECT_FALSE(
local_state.GetDict(prefs::kUserCellDataUse).FindInt(kExpiredDateStr2));
EXPECT_FALSE(
local_state.GetDict(prefs::kUmaCellDataUse).FindInt(kExpiredDateStr2));
EXPECT_EQ(2 * 100 * 1024,
local_state.GetDict(prefs::kUserCellDataUse).FindInt(kTodayStr));
EXPECT_EQ(50 * 1024,
local_state.GetDict(prefs::kUmaCellDataUse).FindInt(kTodayStr));
EXPECT_EQ(
2 * 100 * 1024,
local_state.GetDict(prefs::kUserCellDataUse).FindInt(kYesterdayStr));
EXPECT_EQ(50 * 1024,
local_state.GetDict(prefs::kUmaCellDataUse).FindInt(kYesterdayStr));
}
TEST(DataUseTrackerTest, CheckComputeTotalDataUse) {
TestDataUsePrefService local_state;
FakeDataUseTracker data_use_tracker(&local_state);
local_state.ClearDataUsePrefs();
SetPrefTestValuesOverRatio(&local_state);
int user_data_use =
data_use_tracker.ComputeTotalDataUse(prefs::kUserCellDataUse);
EXPECT_EQ(8 * 100 * 1024, user_data_use);
int uma_data_use =
data_use_tracker.ComputeTotalDataUse(prefs::kUmaCellDataUse);
EXPECT_EQ(4 * 50 * 1024, uma_data_use);
}
TEST(DataUseTrackerTest, CheckShouldUploadLogOnCellular) {
TestDataUsePrefService local_state;
FakeDataUseTracker data_use_tracker(&local_state);
local_state.ClearDataUsePrefs();
SetPrefTestValuesOverRatio(&local_state);
bool can_upload = data_use_tracker.ShouldUploadLogOnCellular(50 * 1024);
EXPECT_TRUE(can_upload);
can_upload = data_use_tracker.ShouldUploadLogOnCellular(100 * 1024);
EXPECT_TRUE(can_upload);
can_upload = data_use_tracker.ShouldUploadLogOnCellular(150 * 1024);
EXPECT_FALSE(can_upload);
local_state.ClearDataUsePrefs();
SetPrefTestValuesValidRatio(&local_state);
can_upload = data_use_tracker.ShouldUploadLogOnCellular(100 * 1024);
EXPECT_TRUE(can_upload);
// this is about 0.49%
can_upload = data_use_tracker.ShouldUploadLogOnCellular(200 * 1024);
EXPECT_TRUE(can_upload);
can_upload = data_use_tracker.ShouldUploadLogOnCellular(300 * 1024);
EXPECT_FALSE(can_upload);
}
} // namespace metrics
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