chrome/browser/metrics/cloned_install_detector_unittest.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "components/metrics/cloned_install_detector.h"
   6
   7 #include "base/prefs/testing_pref_service.h"
   8 #include "components/metrics/machine_id_provider.h"
   9 #include "components/metrics/metrics_pref_names.h"
  10 #include "components/metrics/metrics_state_manager.h"
  11 #include "testing/gtest/include/gtest/gtest.h"
  12
  13 namespace metrics {
  14
  15 namespace {
  16
  17 const std::string kTestRawId = "test";
  18 // Hashed machine id for |kTestRawId|.
  19 const int kTestHashedId = 2216819;
  20
  21 }  // namespace
  22
  23 // TODO(jwd): Change these test to test the full flow and histogram outputs. It
  24 // should also remove the need to make the test a friend of
  25 // ClonedInstallDetector.
  26 TEST(ClonedInstallDetectorTest, SaveId) {
  27   TestingPrefServiceSimple prefs;
  28   ClonedInstallDetector::RegisterPrefs(prefs.registry());
  29
  30   scoped_ptr<ClonedInstallDetector> detector(
  31       new ClonedInstallDetector(MachineIdProvider::CreateInstance()));
  32
  33   detector->SaveMachineId(&prefs, kTestRawId);
  34
  35   EXPECT_EQ(kTestHashedId, prefs.GetInteger(prefs::kMetricsMachineId));
  36 }
  37
  38 TEST(ClonedInstallDetectorTest, DetectClone) {
  39   TestingPrefServiceSimple prefs;
  40   MetricsStateManager::RegisterPrefs(prefs.registry());
  41
  42   // Save a machine id that will cause a clone to be detected.
  43   prefs.SetInteger(prefs::kMetricsMachineId, kTestHashedId + 1);
  44
  45   scoped_ptr<ClonedInstallDetector> detector(
  46       new ClonedInstallDetector(MachineIdProvider::CreateInstance()));
  47
  48   detector->SaveMachineId(&prefs, kTestRawId);
  49
  50   EXPECT_TRUE(prefs.GetBoolean(prefs::kMetricsResetIds));
  51 }
  52
  53 }  // namespace metrics