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//
// Copyright (C) 2015 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#include "update_engine/metrics_utils.h"
#include <gtest/gtest.h>
#include "update_engine/common/fake_clock.h"
#include "update_engine/common/fake_prefs.h"
#include "update_engine/fake_system_state.h"
namespace chromeos_update_engine {
namespace metrics_utils {
class MetricsUtilsTest : public ::testing::Test {};
TEST(MetricsUtilsTest, GetConnectionType) {
// Check that expected combinations map to the right value.
EXPECT_EQ(metrics::ConnectionType::kUnknown,
GetConnectionType(ConnectionType::kUnknown,
ConnectionTethering::kUnknown));
EXPECT_EQ(metrics::ConnectionType::kDisconnected,
GetConnectionType(ConnectionType::kDisconnected,
ConnectionTethering::kUnknown));
EXPECT_EQ(metrics::ConnectionType::kEthernet,
GetConnectionType(ConnectionType::kEthernet,
ConnectionTethering::kUnknown));
EXPECT_EQ(
metrics::ConnectionType::kWifi,
GetConnectionType(ConnectionType::kWifi, ConnectionTethering::kUnknown));
EXPECT_EQ(metrics::ConnectionType::kCellular,
GetConnectionType(ConnectionType::kCellular,
ConnectionTethering::kUnknown));
EXPECT_EQ(metrics::ConnectionType::kTetheredEthernet,
GetConnectionType(ConnectionType::kEthernet,
ConnectionTethering::kConfirmed));
EXPECT_EQ(metrics::ConnectionType::kTetheredWifi,
GetConnectionType(ConnectionType::kWifi,
ConnectionTethering::kConfirmed));
// Ensure that we don't report tethered ethernet unless it's confirmed.
EXPECT_EQ(metrics::ConnectionType::kEthernet,
GetConnectionType(ConnectionType::kEthernet,
ConnectionTethering::kNotDetected));
EXPECT_EQ(metrics::ConnectionType::kEthernet,
GetConnectionType(ConnectionType::kEthernet,
ConnectionTethering::kSuspected));
EXPECT_EQ(metrics::ConnectionType::kEthernet,
GetConnectionType(ConnectionType::kEthernet,
ConnectionTethering::kUnknown));
// Ditto for tethered wifi.
EXPECT_EQ(metrics::ConnectionType::kWifi,
GetConnectionType(ConnectionType::kWifi,
ConnectionTethering::kNotDetected));
EXPECT_EQ(metrics::ConnectionType::kWifi,
GetConnectionType(ConnectionType::kWifi,
ConnectionTethering::kSuspected));
EXPECT_EQ(
metrics::ConnectionType::kWifi,
GetConnectionType(ConnectionType::kWifi, ConnectionTethering::kUnknown));
}
TEST(MetricsUtilsTest, WallclockDurationHelper) {
FakeSystemState fake_system_state;
FakeClock fake_clock;
base::TimeDelta duration;
const std::string state_variable_key = "test-prefs";
FakePrefs fake_prefs;
fake_system_state.set_clock(&fake_clock);
fake_system_state.set_prefs(&fake_prefs);
// Initialize wallclock to 1 sec.
fake_clock.SetWallclockTime(base::Time::FromInternalValue(1000000));
// First time called so no previous measurement available.
EXPECT_FALSE(metrics_utils::WallclockDurationHelper(
&fake_system_state, state_variable_key, &duration));
// Next time, we should get zero since the clock didn't advance.
EXPECT_TRUE(metrics_utils::WallclockDurationHelper(
&fake_system_state, state_variable_key, &duration));
EXPECT_EQ(duration.InSeconds(), 0);
// We can also call it as many times as we want with it being
// considered a failure.
EXPECT_TRUE(metrics_utils::WallclockDurationHelper(
&fake_system_state, state_variable_key, &duration));
EXPECT_EQ(duration.InSeconds(), 0);
EXPECT_TRUE(metrics_utils::WallclockDurationHelper(
&fake_system_state, state_variable_key, &duration));
EXPECT_EQ(duration.InSeconds(), 0);
// Advance the clock one second, then we should get 1 sec on the
// next call and 0 sec on the subsequent call.
fake_clock.SetWallclockTime(base::Time::FromInternalValue(2000000));
EXPECT_TRUE(metrics_utils::WallclockDurationHelper(
&fake_system_state, state_variable_key, &duration));
EXPECT_EQ(duration.InSeconds(), 1);
EXPECT_TRUE(metrics_utils::WallclockDurationHelper(
&fake_system_state, state_variable_key, &duration));
EXPECT_EQ(duration.InSeconds(), 0);
// Advance clock two seconds and we should get 2 sec and then 0 sec.
fake_clock.SetWallclockTime(base::Time::FromInternalValue(4000000));
EXPECT_TRUE(metrics_utils::WallclockDurationHelper(
&fake_system_state, state_variable_key, &duration));
EXPECT_EQ(duration.InSeconds(), 2);
EXPECT_TRUE(metrics_utils::WallclockDurationHelper(
&fake_system_state, state_variable_key, &duration));
EXPECT_EQ(duration.InSeconds(), 0);
// There's a possibility that the wallclock can go backwards (NTP
// adjustments, for example) so check that we properly handle this
// case.
fake_clock.SetWallclockTime(base::Time::FromInternalValue(3000000));
EXPECT_FALSE(metrics_utils::WallclockDurationHelper(
&fake_system_state, state_variable_key, &duration));
fake_clock.SetWallclockTime(base::Time::FromInternalValue(4000000));
EXPECT_TRUE(metrics_utils::WallclockDurationHelper(
&fake_system_state, state_variable_key, &duration));
EXPECT_EQ(duration.InSeconds(), 1);
}
TEST(MetricsUtilsTest, MonotonicDurationHelper) {
int64_t storage = 0;
FakeSystemState fake_system_state;
FakeClock fake_clock;
base::TimeDelta duration;
fake_system_state.set_clock(&fake_clock);
// Initialize monotonic clock to 1 sec.
fake_clock.SetMonotonicTime(base::Time::FromInternalValue(1000000));
// First time called so no previous measurement available.
EXPECT_FALSE(metrics_utils::MonotonicDurationHelper(
&fake_system_state, &storage, &duration));
// Next time, we should get zero since the clock didn't advance.
EXPECT_TRUE(metrics_utils::MonotonicDurationHelper(
&fake_system_state, &storage, &duration));
EXPECT_EQ(duration.InSeconds(), 0);
// We can also call it as many times as we want with it being
// considered a failure.
EXPECT_TRUE(metrics_utils::MonotonicDurationHelper(
&fake_system_state, &storage, &duration));
EXPECT_EQ(duration.InSeconds(), 0);
EXPECT_TRUE(metrics_utils::MonotonicDurationHelper(
&fake_system_state, &storage, &duration));
EXPECT_EQ(duration.InSeconds(), 0);
// Advance the clock one second, then we should get 1 sec on the
// next call and 0 sec on the subsequent call.
fake_clock.SetMonotonicTime(base::Time::FromInternalValue(2000000));
EXPECT_TRUE(metrics_utils::MonotonicDurationHelper(
&fake_system_state, &storage, &duration));
EXPECT_EQ(duration.InSeconds(), 1);
EXPECT_TRUE(metrics_utils::MonotonicDurationHelper(
&fake_system_state, &storage, &duration));
EXPECT_EQ(duration.InSeconds(), 0);
// Advance clock two seconds and we should get 2 sec and then 0 sec.
fake_clock.SetMonotonicTime(base::Time::FromInternalValue(4000000));
EXPECT_TRUE(metrics_utils::MonotonicDurationHelper(
&fake_system_state, &storage, &duration));
EXPECT_EQ(duration.InSeconds(), 2);
EXPECT_TRUE(metrics_utils::MonotonicDurationHelper(
&fake_system_state, &storage, &duration));
EXPECT_EQ(duration.InSeconds(), 0);
}
} // namespace metrics_utils
} // namespace chromeos_update_engine