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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chromeos/ash/components/tether/hotspot_usage_duration_tracker.h"
#include <memory>
#include "base/test/metrics/histogram_tester.h"
#include "base/test/simple_test_clock.h"
#include "chromeos/ash/components/tether/fake_active_host.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace ash {
namespace tether {
namespace {
const char kTestDeviceId[] = "testDeviceId";
const char kTestTetherNetworkGuid[] = "testTetherNetworkGuid";
const char kTestWifiNetworkGuid[] = "testWifiNetworkGuid";
constexpr const base::TimeDelta kTestDuration = base::Seconds(5);
} // namespace
class HotspotUsageDurationTrackerTest : public testing::Test {
public:
HotspotUsageDurationTrackerTest(const HotspotUsageDurationTrackerTest&) =
delete;
HotspotUsageDurationTrackerTest& operator=(
const HotspotUsageDurationTrackerTest&) = delete;
protected:
HotspotUsageDurationTrackerTest() = default;
~HotspotUsageDurationTrackerTest() override = default;
void SetUp() override {
fake_active_host_ = std::make_unique<FakeActiveHost>();
test_clock_ = std::make_unique<base::SimpleTestClock>();
test_clock_->SetNow(base::Time::UnixEpoch());
tracker_ = std::make_unique<HotspotUsageDurationTracker>(
fake_active_host_.get(), test_clock_.get());
}
void AdvanceClock() { test_clock_->Advance(kTestDuration); }
std::unique_ptr<FakeActiveHost> fake_active_host_;
std::unique_ptr<base::SimpleTestClock> test_clock_;
base::HistogramTester histogram_tester_;
std::unique_ptr<HotspotUsageDurationTracker> tracker_;
};
TEST_F(HotspotUsageDurationTrackerTest, TestNoConnection) {
// Attempt a connection but fail to connect. No duration should be logged.
fake_active_host_->SetActiveHostConnecting(kTestDeviceId,
kTestTetherNetworkGuid);
AdvanceClock();
fake_active_host_->SetActiveHostDisconnected();
histogram_tester_.ExpectTotalCount("InstantTethering.HotspotUsageDuration",
0 /* count */);
AdvanceClock();
// Fail one more attempt.
fake_active_host_->SetActiveHostConnecting(kTestDeviceId,
kTestTetherNetworkGuid);
AdvanceClock();
fake_active_host_->SetActiveHostDisconnected();
histogram_tester_.ExpectTotalCount("InstantTethering.HotspotUsageDuration",
0 /* count */);
}
TEST_F(HotspotUsageDurationTrackerTest, TestConnections) {
// Connect, have some time pass, then disconnect. Metric should have been
// logged.
fake_active_host_->SetActiveHostConnecting(kTestDeviceId,
kTestTetherNetworkGuid);
fake_active_host_->SetActiveHostConnected(
kTestDeviceId, kTestTetherNetworkGuid, kTestWifiNetworkGuid);
AdvanceClock();
fake_active_host_->SetActiveHostDisconnected();
histogram_tester_.ExpectTimeBucketCount(
"InstantTethering.HotspotUsageDuration", kTestDuration, 1 /* count */);
AdvanceClock();
// Try one more time, advancing the clock for twice as long.
fake_active_host_->SetActiveHostConnecting(kTestDeviceId,
kTestTetherNetworkGuid);
fake_active_host_->SetActiveHostConnected(
kTestDeviceId, kTestTetherNetworkGuid, kTestWifiNetworkGuid);
AdvanceClock();
AdvanceClock();
fake_active_host_->SetActiveHostDisconnected();
histogram_tester_.ExpectTimeBucketCount(
"InstantTethering.HotspotUsageDuration", 2 * kTestDuration,
1 /* count */);
}
TEST_F(HotspotUsageDurationTrackerTest, TestErrorCondition) {
fake_active_host_->SetActiveHostConnecting(kTestDeviceId,
kTestTetherNetworkGuid);
fake_active_host_->SetActiveHostConnected(
kTestDeviceId, kTestTetherNetworkGuid, kTestWifiNetworkGuid);
AdvanceClock();
// Transition from CONNECTED to CONNECTING. This should never actually happen,
// so we can assume that some error occurred. No metric should be logged.
fake_active_host_->SetActiveHostConnecting(kTestDeviceId,
kTestTetherNetworkGuid);
histogram_tester_.ExpectTotalCount("InstantTethering.HotspotUsageDuration",
0 /* count */);
}
} // namespace tether
} // namespace ash
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