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// Copyright 2014 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/cloned_install_detector.h"
#include "base/callback_list.h"
#include "base/test/bind.h"
#include "components/metrics/machine_id_provider.h"
#include "components/metrics/metrics_pref_names.h"
#include "components/prefs/testing_pref_service.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace metrics {
namespace {
const std::string kTestRawId = "test";
// Hashed machine id for |kTestRawId|.
const int kTestHashedId = 2216819;
} // namespace
// TODO(jwd): Change these test to test the full flow and histogram outputs. It
// should also remove the need to make the test a friend of
// ClonedInstallDetector.
TEST(ClonedInstallDetectorTest, SaveId) {
TestingPrefServiceSimple prefs;
ClonedInstallDetector::RegisterPrefs(prefs.registry());
ClonedInstallDetector detector;
detector.SaveMachineId(&prefs, base::Time::Now(), kTestRawId);
EXPECT_EQ(kTestHashedId, prefs.GetInteger(prefs::kMetricsMachineId));
EXPECT_EQ(
0, prefs.GetInt64(prefs::kSessionStartTimestampForLastClonedDetection));
}
TEST(ClonedInstallDetectorTest, DetectClone) {
TestingPrefServiceSimple prefs;
ClonedInstallDetector::RegisterPrefs(prefs.registry());
// Save a machine id that will cause a clone to be detected.
prefs.SetInteger(prefs::kMetricsMachineId, kTestHashedId + 1);
base::Time check_requested_time = base::Time::Now();
ClonedInstallDetector detector;
detector.SaveMachineId(&prefs, check_requested_time, kTestRawId);
EXPECT_TRUE(prefs.GetBoolean(prefs::kMetricsResetIds));
EXPECT_TRUE(detector.ShouldResetClientIds(&prefs));
EXPECT_EQ(
check_requested_time.ToTimeT(),
prefs.GetInt64(prefs::kSessionStartTimestampForLastClonedDetection));
}
TEST(ClonedInstallDetectorTest, ShouldResetClientIds) {
TestingPrefServiceSimple prefs;
ClonedInstallDetector::RegisterPrefs(prefs.registry());
ClonedInstallDetector detector;
EXPECT_FALSE(detector.ShouldResetClientIds(&prefs));
// Save a machine id that will cause a clone to be detected.
prefs.SetInteger(prefs::kMetricsMachineId, kTestHashedId + 1);
detector.SaveMachineId(&prefs, base::Time::Now(), kTestRawId);
// Multiple different services may call into the cloned install detector, it
// needs to continue supporting giving the same answer more than once
EXPECT_TRUE(detector.ShouldResetClientIds(&prefs));
EXPECT_TRUE(detector.ShouldResetClientIds(&prefs));
}
TEST(ClonedInstallDetectorTest, ClonedInstallDetectedInCurrentSession) {
TestingPrefServiceSimple prefs;
ClonedInstallDetector::RegisterPrefs(prefs.registry());
ClonedInstallDetector detector;
EXPECT_FALSE(detector.ShouldResetClientIds(&prefs));
EXPECT_FALSE(detector.ClonedInstallDetectedInCurrentSession());
// Save a machine id that will cause a clone to be detected.
prefs.SetInteger(prefs::kMetricsMachineId, kTestHashedId + 1);
detector.SaveMachineId(&prefs, base::Time::Now(), kTestRawId);
// Ensure that the current session call returns true both before things are
// modified by ShouldResetClientIds and after
EXPECT_TRUE(detector.ClonedInstallDetectedInCurrentSession());
EXPECT_TRUE(detector.ShouldResetClientIds(&prefs));
EXPECT_TRUE(detector.ClonedInstallDetectedInCurrentSession());
}
TEST(ClonedInstallDetectorTest, ClonedInstallDetectedCallback) {
TestingPrefServiceSimple prefs;
ClonedInstallDetector::RegisterPrefs(prefs.registry());
ClonedInstallDetector detector;
// Set up a callback that will set |callback_called| to true when a cloned
// install is detected.
bool callback_called = false;
base::CallbackListSubscription subscription =
detector.AddOnClonedInstallDetectedCallback(base::BindLambdaForTesting(
[&callback_called] { callback_called = true; }));
// Save a machine id that will not cause a clone to be detected.
prefs.SetInteger(prefs::kMetricsMachineId, kTestHashedId);
detector.SaveMachineId(&prefs, base::Time::Now(), kTestRawId);
EXPECT_FALSE(detector.ClonedInstallDetectedInCurrentSession());
EXPECT_FALSE(callback_called);
// Save a machine id that will cause a clone to be detected.
prefs.SetInteger(prefs::kMetricsMachineId, kTestHashedId + 1);
detector.SaveMachineId(&prefs, base::Time::Now(), kTestRawId);
EXPECT_TRUE(detector.ClonedInstallDetectedInCurrentSession());
EXPECT_TRUE(callback_called);
// Verify that if a callback is added after the cloned install has been
// detected, it is called immediately.
bool callback_called2 = false;
base::CallbackListSubscription subscription2 =
detector.AddOnClonedInstallDetectedCallback(base::BindLambdaForTesting(
[&callback_called2] { callback_called2 = true; }));
EXPECT_TRUE(callback_called2);
}
} // namespace metrics
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