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// Copyright 2016 The Chromium Authors. All rights reserved.
// 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/strings/stringprintf.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() {
registry()->RegisterDictionaryPref(metrics::prefs::kUserCellDataUse);
registry()->RegisterDictionaryPref(metrics::prefs::kUmaCellDataUse);
}
void ClearDataUsePrefs() {
ClearPref(metrics::prefs::kUserCellDataUse);
ClearPref(metrics::prefs::kUmaCellDataUse);
}
private:
DISALLOW_COPY_AND_ASSIGN(TestDataUsePrefService);
};
class FakeDataUseTracker : public DataUseTracker {
public:
FakeDataUseTracker(PrefService* local_state) : DataUseTracker(local_state) {}
bool GetUmaWeeklyQuota(int* uma_weekly_quota_bytes) const override {
*uma_weekly_quota_bytes = 200;
return true;
}
bool GetUmaRatio(double* ratio) const override {
*ratio = 0.05;
return true;
}
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;
}
private:
DISALLOW_COPY_AND_ASSIGN(FakeDataUseTracker);
};
// Sets up data usage prefs with mock values so that UMA traffic is above the
// allowed ratio.
void SetPrefTestValuesOverRatio(PrefService* local_state) {
base::DictionaryValue user_pref_dict;
user_pref_dict.SetInteger(kTodayStr, 2 * 100);
user_pref_dict.SetInteger(kYesterdayStr, 2 * 100);
user_pref_dict.SetInteger(kExpiredDateStr1, 2 * 100);
user_pref_dict.SetInteger(kExpiredDateStr2, 2 * 100);
local_state->Set(prefs::kUserCellDataUse, user_pref_dict);
base::DictionaryValue uma_pref_dict;
uma_pref_dict.SetInteger(kTodayStr, 50);
uma_pref_dict.SetInteger(kYesterdayStr, 50);
uma_pref_dict.SetInteger(kExpiredDateStr1, 50);
uma_pref_dict.SetInteger(kExpiredDateStr2, 50);
local_state->Set(prefs::kUmaCellDataUse, uma_pref_dict);
}
// Sets up data usage prefs with mock values which can be valid.
void SetPrefTestValuesValidRatio(PrefService* local_state) {
base::DictionaryValue user_pref_dict;
user_pref_dict.SetInteger(kTodayStr, 100 * 100);
user_pref_dict.SetInteger(kYesterdayStr, 100 * 100);
user_pref_dict.SetInteger(kExpiredDateStr1, 100 * 100);
user_pref_dict.SetInteger(kExpiredDateStr2, 100 * 100);
local_state->Set(prefs::kUserCellDataUse, user_pref_dict);
// Should be 4% of user traffic
base::DictionaryValue uma_pref_dict;
uma_pref_dict.SetInteger(kTodayStr, 4 * 100);
uma_pref_dict.SetInteger(kYesterdayStr, 4 * 100);
uma_pref_dict.SetInteger(kExpiredDateStr1, 4 * 100);
uma_pref_dict.SetInteger(kExpiredDateStr2, 4 * 100);
local_state->Set(prefs::kUmaCellDataUse, uma_pref_dict);
}
} // namespace
TEST(DataUseTrackerTest, CheckUpdateUsagePref) {
TestDataUsePrefService local_state;
FakeDataUseTracker data_use_tracker(&local_state);
local_state.ClearDataUsePrefs();
int user_pref_value = 0;
int uma_pref_value = 0;
data_use_tracker.UpdateMetricsUsagePrefs("", 2 * 100, true);
local_state.GetDictionary(prefs::kUserCellDataUse)
->GetInteger(kTodayStr, &user_pref_value);
EXPECT_EQ(2 * 100, user_pref_value);
local_state.GetDictionary(prefs::kUmaCellDataUse)
->GetInteger(kTodayStr, &uma_pref_value);
EXPECT_EQ(0, uma_pref_value);
data_use_tracker.UpdateMetricsUsagePrefs("UMA", 100, true);
local_state.GetDictionary(prefs::kUserCellDataUse)
->GetInteger(kTodayStr, &user_pref_value);
EXPECT_EQ(3 * 100, user_pref_value);
local_state.GetDictionary(prefs::kUmaCellDataUse)
->GetInteger(kTodayStr, &uma_pref_value);
EXPECT_EQ(100, uma_pref_value);
}
TEST(DataUseTrackerTest, CheckRemoveExpiredEntries) {
TestDataUsePrefService local_state;
FakeDataUseTracker data_use_tracker(&local_state);
local_state.ClearDataUsePrefs();
SetPrefTestValuesOverRatio(&local_state);
data_use_tracker.RemoveExpiredEntries();
int user_pref_value = 0;
int uma_pref_value = 0;
local_state.GetDictionary(prefs::kUserCellDataUse)
->GetInteger(kExpiredDateStr1, &user_pref_value);
EXPECT_EQ(0, user_pref_value);
local_state.GetDictionary(prefs::kUmaCellDataUse)
->GetInteger(kExpiredDateStr1, &uma_pref_value);
EXPECT_EQ(0, uma_pref_value);
local_state.GetDictionary(prefs::kUserCellDataUse)
->GetInteger(kExpiredDateStr2, &user_pref_value);
EXPECT_EQ(0, user_pref_value);
local_state.GetDictionary(prefs::kUmaCellDataUse)
->GetInteger(kExpiredDateStr2, &uma_pref_value);
EXPECT_EQ(0, uma_pref_value);
local_state.GetDictionary(prefs::kUserCellDataUse)
->GetInteger(kTodayStr, &user_pref_value);
EXPECT_EQ(2 * 100, user_pref_value);
local_state.GetDictionary(prefs::kUmaCellDataUse)
->GetInteger(kTodayStr, &uma_pref_value);
EXPECT_EQ(50, uma_pref_value);
local_state.GetDictionary(prefs::kUserCellDataUse)
->GetInteger(kYesterdayStr, &user_pref_value);
EXPECT_EQ(2 * 100, user_pref_value);
local_state.GetDictionary(prefs::kUmaCellDataUse)
->GetInteger(kYesterdayStr, &uma_pref_value);
EXPECT_EQ(50, uma_pref_value);
}
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, user_data_use);
int uma_data_use =
data_use_tracker.ComputeTotalDataUse(prefs::kUmaCellDataUse);
EXPECT_EQ(4 * 50, 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);
EXPECT_TRUE(can_upload);
can_upload = data_use_tracker.ShouldUploadLogOnCellular(100);
EXPECT_TRUE(can_upload);
can_upload = data_use_tracker.ShouldUploadLogOnCellular(150);
EXPECT_FALSE(can_upload);
local_state.ClearDataUsePrefs();
SetPrefTestValuesValidRatio(&local_state);
can_upload = data_use_tracker.ShouldUploadLogOnCellular(100);
EXPECT_TRUE(can_upload);
// this is about 0.49%
can_upload = data_use_tracker.ShouldUploadLogOnCellular(200);
EXPECT_TRUE(can_upload);
can_upload = data_use_tracker.ShouldUploadLogOnCellular(300);
EXPECT_FALSE(can_upload);
}
} // namespace metrics
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