Add device location reporting

chrome/browser/policy/device_status_collector_unittest.cc

 // Copyright (c) 2012 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 "chrome/browser/policy/device_status_collector.h"
 
+#include "base/logging.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
-#include "base/time.h"
-#include "chrome/browser/idle.h"
 #include "chrome/browser/chromeos/cros_settings.h"
 #include "chrome/browser/chromeos/cros_settings_names.h"
 #include "chrome/browser/chromeos/cros_settings_provider.h"
 #include "chrome/browser/chromeos/stub_cros_settings_provider.h"
 #include "chrome/browser/chromeos/system/mock_statistics_provider.h"
+#include "chrome/browser/chromeos/system/statistics_provider.h"
 #include "chrome/browser/policy/proto/device_management_backend.pb.h"
 #include "chrome/browser/prefs/pref_service.h"
+#include "chrome/common/pref_names.h"
 #include "chrome/test/base/testing_pref_service.h"
+#include "content/public/browser/browser_thread.h"
 #include "content/test/test_browser_thread.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+using ::testing::_;
+using ::testing::DoAll;
+using ::testing::NotNull;
+using ::testing::Return;
+using ::testing::SetArgPointee;
 using base::TimeDelta;
 using base::Time;
 
 namespace em = enterprise_management;
 
 namespace {
 
 const int64 kMillisecondsPerDay = Time::kMicrosecondsPerDay / 1000;
 
+scoped_ptr<content::Geoposition> mock_position_to_return_next;
+
+void SetMockPositionToReturnNext(const content::Geoposition &position) {
+  mock_position_to_return_next.reset(new content::Geoposition(position));
+}
+
+void MockPositionUpdateRequester(
+    const content::GeolocationUpdateCallback& callback) {
+  if (!mock_position_to_return_next.get())
+    return;
+
+  // If the fix is invalid, the DeviceStatusCollector will immediately request
+  // another update when it receives the callback. This is desirable and safe in
+  // real life where geolocation updates arrive asynchronously. In this testing
+  // harness, the callback is invoked synchronously upon request, leading to a
+  // request-callback loop. The loop is broken by returning the mock position
+  // only once.
+  scoped_ptr<content::Geoposition> position(
+      mock_position_to_return_next.release());
+  callback.Run(*position);
+}
+
 class TestingDeviceStatusCollector : public policy::DeviceStatusCollector {
  public:
   TestingDeviceStatusCollector(
       PrefService* local_state,
       chromeos::system::StatisticsProvider* provider)
-    :  policy::DeviceStatusCollector(local_state, provider),
-       local_state_(local_state) {
+      : policy::DeviceStatusCollector(local_state,
+                                      provider,
+                                      &MockPositionUpdateRequester) {
     // Set the baseline time to a fixed value (1 AM) to prevent test flakiness
     // due to a single activity period spanning two days.
     SetBaselineTime(Time::Now().LocalMidnight() + TimeDelta::FromHours(1));
   }
 
   void Simulate(IdleState* states, int len) {
     for (int i = 0; i < len; i++)
       IdleStateCallback(states[i]);
   }
 
@@ skipping 13 matching lines @@
 
  protected:
   virtual void CheckIdleState() OVERRIDE {
     // This should never be called in testing, as it results in a dbus call.
     NOTREACHED();
   }
 
   // Each time this is called, returns a time that is a fixed increment
   // later than the previous time.
   virtual Time GetCurrentTime() OVERRIDE {
-    int poll_interval = policy::DeviceStatusCollector::kPollIntervalSeconds;
+    int poll_interval = policy::DeviceStatusCollector::kIdlePollIntervalSeconds;
     return baseline_time_ +
         TimeDelta::FromSeconds(poll_interval * baseline_offset_periods_++);
   }
 
  private:
-  PrefService* local_state_;
-
   // Baseline time for the fake times returned from GetCurrentTime().
   Time baseline_time_;
 
   // The number of simulated periods since the baseline time.
   int baseline_offset_periods_;
 };
 
 // Return the total number of active milliseconds contained in a device
 // status report.
 int64 GetActiveMilliseconds(em::DeviceStatusReportRequest& status) {
   int64 active_milliseconds = 0;
   for (int i = 0; i < status.active_period_size(); i++) {
     active_milliseconds += status.active_period(i).active_duration();
   }
   return active_milliseconds;
 }
 
 }  // namespace
 
 namespace policy {
 
-using ::testing::_;
-using ::testing::NotNull;
-using ::testing::Return;
-using ::testing::SetArgPointee;
-
 class DeviceStatusCollectorTest : public testing::Test {
  public:
   DeviceStatusCollectorTest()
     : message_loop_(MessageLoop::TYPE_UI),
       ui_thread_(content::BrowserThread::UI, &message_loop_),
       file_thread_(content::BrowserThread::FILE, &message_loop_),
-      status_collector_(&prefs_, &statistics_provider_) {
+      io_thread_(content::BrowserThread::IO, &message_loop_) {
+    TestingDeviceStatusCollector::RegisterPrefs(&prefs_);
 
-    DeviceStatusCollector::RegisterPrefs(&prefs_);
     EXPECT_CALL(statistics_provider_, GetMachineStatistic(_, NotNull()))
         .WillRepeatedly(Return(false));
 
+    // Remove the real DeviceSettingsProvider and replace it with a stub.
     cros_settings_ = chromeos::CrosSettings::Get();
-
-    // Remove the real DeviceSettingsProvider and replace it with a stub.
     device_settings_provider_ =
         cros_settings_->GetProvider(chromeos::kReportDeviceVersionInfo);
     EXPECT_TRUE(device_settings_provider_ != NULL);
     EXPECT_TRUE(
         cros_settings_->RemoveSettingsProvider(device_settings_provider_));
     cros_settings_->AddSettingsProvider(&stub_settings_provider_);
+
+    RestartStatusCollector();
   }
 
   ~DeviceStatusCollectorTest() {
     // Restore the real DeviceSettingsProvider.
     EXPECT_TRUE(
       cros_settings_->RemoveSettingsProvider(&stub_settings_provider_));
     cros_settings_->AddSettingsProvider(device_settings_provider_);
   }
 
+  void RestartStatusCollector() {
+    status_collector_.reset(
+        new TestingDeviceStatusCollector(&prefs_, &statistics_provider_));
+  }
+
+  void GetStatus() {
+    status_.Clear();
+    status_collector_->GetStatus(&status_);
+  }
+
+  void CheckThatNoLocationIsReported() {
+    GetStatus();
+    EXPECT_FALSE(status_.has_device_location());
+  }
+
+  void CheckThatAValidLocationIsReported() {
+    // Checks that a location is being reported which matches the valid fix
+    // set using SetMockPositionToReturnNext().
+    GetStatus();
+    EXPECT_TRUE(status_.has_device_location());
+    em::DeviceLocation location = status_.device_location();
+    if (location.has_error_code())
+      EXPECT_EQ(em::DeviceLocation::ERROR_CODE_NONE, location.error_code());
+    EXPECT_TRUE(location.has_latitude());
+    EXPECT_TRUE(location.has_longitude());
+    EXPECT_TRUE(location.has_accuracy());
+    EXPECT_TRUE(location.has_timestamp());
+    EXPECT_FALSE(location.has_altitude());
+    EXPECT_FALSE(location.has_altitude_accuracy());
+    EXPECT_FALSE(location.has_heading());
+    EXPECT_FALSE(location.has_speed());
+    EXPECT_FALSE(location.has_error_message());
+    EXPECT_DOUBLE_EQ(4.3, location.latitude());
+    EXPECT_DOUBLE_EQ(-7.8, location.longitude());
+    EXPECT_DOUBLE_EQ(3., location.accuracy());
+    // Check that the timestamp is not older than ten minutes.
+    EXPECT_TRUE(Time::Now() - Time::FromDoubleT(location.timestamp() / 1000.) <
+                TimeDelta::FromMinutes(10));
+  }
+
+  void CheckThatALocationErrorIsReported() {
+    GetStatus();
+    EXPECT_TRUE(status_.has_device_location());
+    em::DeviceLocation location = status_.device_location();
+    EXPECT_TRUE(location.has_error_code());
+    EXPECT_EQ(em::DeviceLocation::ERROR_CODE_POSITION_UNAVAILABLE,
+              location.error_code());
+  }
+
  protected:
   // Convenience method.
   int64 ActivePeriodMilliseconds() {
-    return policy::DeviceStatusCollector::kPollIntervalSeconds * 1000;
+    return policy::DeviceStatusCollector::kIdlePollIntervalSeconds * 1000;
   }
 
   MessageLoop message_loop_;
   content::TestBrowserThread ui_thread_;
   content::TestBrowserThread file_thread_;
+  content::TestBrowserThread io_thread_;
 
   TestingPrefService prefs_;
   chromeos::system::MockStatisticsProvider statistics_provider_;
-  TestingDeviceStatusCollector status_collector_;
+  scoped_ptr<TestingDeviceStatusCollector> status_collector_;
   em::DeviceStatusReportRequest status_;
   chromeos::CrosSettings* cros_settings_;
   chromeos::CrosSettingsProvider* device_settings_provider_;
   chromeos::StubCrosSettingsProvider stub_settings_provider_;
 };
 
 TEST_F(DeviceStatusCollectorTest, AllIdle) {
   IdleState test_states[] = {
     IDLE_STATE_IDLE,
     IDLE_STATE_IDLE,
     IDLE_STATE_IDLE
   };
   cros_settings_->SetBoolean(chromeos::kReportDeviceActivityTimes, true);
 
   // Test reporting with no data.
-  status_collector_.GetStatus(&status_);
+  GetStatus();
   EXPECT_EQ(0, status_.active_period_size());
   EXPECT_EQ(0, GetActiveMilliseconds(status_));
 
   // Test reporting with a single idle sample.
-  status_collector_.Simulate(test_states, 1);
-  status_collector_.GetStatus(&status_);
+  status_collector_->Simulate(test_states, 1);
+  GetStatus();
   EXPECT_EQ(0, status_.active_period_size());
   EXPECT_EQ(0, GetActiveMilliseconds(status_));
 
   // Test reporting with multiple consecutive idle samples.
-  status_collector_.Simulate(test_states,
-                             sizeof(test_states) / sizeof(IdleState));
-  status_collector_.GetStatus(&status_);
+  status_collector_->Simulate(test_states,
+                              sizeof(test_states) / sizeof(IdleState));
+  GetStatus();
   EXPECT_EQ(0, status_.active_period_size());
   EXPECT_EQ(0, GetActiveMilliseconds(status_));
 }
 
 TEST_F(DeviceStatusCollectorTest, AllActive) {
   IdleState test_states[] = {
     IDLE_STATE_ACTIVE,
     IDLE_STATE_ACTIVE,
     IDLE_STATE_ACTIVE
   };
   cros_settings_->SetBoolean(chromeos::kReportDeviceActivityTimes, true);
 
   // Test a single active sample.
-  status_collector_.Simulate(test_states, 1);
-  status_collector_.GetStatus(&status_);
+  status_collector_->Simulate(test_states, 1);
+  GetStatus();
   EXPECT_EQ(1, status_.active_period_size());
   EXPECT_EQ(1 * ActivePeriodMilliseconds(), GetActiveMilliseconds(status_));
   status_.clear_active_period(); // Clear the result protobuf.
 
   // Test multiple consecutive active samples.
-  status_collector_.Simulate(test_states,
-                             sizeof(test_states) / sizeof(IdleState));
-  status_collector_.GetStatus(&status_);
+  status_collector_->Simulate(test_states,
+                              sizeof(test_states) / sizeof(IdleState));
+  GetStatus();
   EXPECT_EQ(1, status_.active_period_size());
   EXPECT_EQ(3 * ActivePeriodMilliseconds(), GetActiveMilliseconds(status_));
 }
 
 TEST_F(DeviceStatusCollectorTest, MixedStates) {
   IdleState test_states[] = {
     IDLE_STATE_ACTIVE,
     IDLE_STATE_IDLE,
     IDLE_STATE_ACTIVE,
     IDLE_STATE_ACTIVE,
     IDLE_STATE_IDLE,
     IDLE_STATE_IDLE,
     IDLE_STATE_ACTIVE
   };
   cros_settings_->SetBoolean(chromeos::kReportDeviceActivityTimes, true);
-  status_collector_.Simulate(test_states,
-                             sizeof(test_states) / sizeof(IdleState));
-  status_collector_.GetStatus(&status_);
+  status_collector_->Simulate(test_states,
+                              sizeof(test_states) / sizeof(IdleState));
+  GetStatus();
   EXPECT_EQ(4 * ActivePeriodMilliseconds(), GetActiveMilliseconds(status_));
 }
 
 TEST_F(DeviceStatusCollectorTest, StateKeptInPref) {
   IdleState test_states[] = {
     IDLE_STATE_ACTIVE,
     IDLE_STATE_IDLE,
     IDLE_STATE_ACTIVE,
     IDLE_STATE_ACTIVE,
     IDLE_STATE_IDLE,
     IDLE_STATE_IDLE
   };
   cros_settings_->SetBoolean(chromeos::kReportDeviceActivityTimes, true);
-  status_collector_.Simulate(test_states,
-                             sizeof(test_states) / sizeof(IdleState));
+  status_collector_->Simulate(test_states,
+                              sizeof(test_states) / sizeof(IdleState));
 
-  // Process the list a second time with a different collector.
-  // It should be able to count the active periods found by the first
-  // collector, because the results are stored in a pref.
-  TestingDeviceStatusCollector second_collector(&prefs_,
-                                                &statistics_provider_);
-  second_collector.Simulate(test_states,
-                            sizeof(test_states) / sizeof(IdleState));
+  // Process the list a second time after restarting the collector. It should be
+  // able to count the active periods found by the original collector, because
+  // the results are stored in a pref.
+  RestartStatusCollector();
+  status_collector_->Simulate(test_states,
+                              sizeof(test_states) / sizeof(IdleState));
 
-  second_collector.GetStatus(&status_);
+  GetStatus();
   EXPECT_EQ(6 * ActivePeriodMilliseconds(), GetActiveMilliseconds(status_));
 }
 
 TEST_F(DeviceStatusCollectorTest, Times) {
   IdleState test_states[] = {
     IDLE_STATE_ACTIVE,
     IDLE_STATE_IDLE,
     IDLE_STATE_ACTIVE,
     IDLE_STATE_ACTIVE,
     IDLE_STATE_IDLE,
     IDLE_STATE_IDLE
   };
   cros_settings_->SetBoolean(chromeos::kReportDeviceActivityTimes, true);
-  status_collector_.Simulate(test_states,
-                             sizeof(test_states) / sizeof(IdleState));
-  status_collector_.GetStatus(&status_);
+  status_collector_->Simulate(test_states,
+                              sizeof(test_states) / sizeof(IdleState));
+  GetStatus();
   EXPECT_EQ(3 * ActivePeriodMilliseconds(), GetActiveMilliseconds(status_));
 }
 
 TEST_F(DeviceStatusCollectorTest, MaxStoredPeriods) {
   IdleState test_states[] = {
     IDLE_STATE_ACTIVE,
     IDLE_STATE_IDLE
   };
   unsigned int max_days = 10;
 
   cros_settings_->SetBoolean(chromeos::kReportDeviceActivityTimes, true);
-  status_collector_.set_max_stored_past_activity_days(max_days - 1);
-  status_collector_.set_max_stored_future_activity_days(1);
+  status_collector_->set_max_stored_past_activity_days(max_days - 1);
+  status_collector_->set_max_stored_future_activity_days(1);
   Time baseline = Time::Now().LocalMidnight();
 
   // Simulate 12 active periods.
   for (int i = 0; i < static_cast<int>(max_days) + 2; i++) {
-    status_collector_.Simulate(test_states,
-                               sizeof(test_states) / sizeof(IdleState));
+    status_collector_->Simulate(test_states,
+                                sizeof(test_states) / sizeof(IdleState));
     // Advance the simulated clock by a day.
     baseline += TimeDelta::FromDays(1);
-    status_collector_.SetBaselineTime(baseline);
+    status_collector_->SetBaselineTime(baseline);
   }
 
   // Check that we don't exceed the max number of periods.
-  status_collector_.GetStatus(&status_);
+  GetStatus();
   EXPECT_EQ(static_cast<int>(max_days), status_.active_period_size());
 
   // Simulate some future times.
   for (int i = 0; i < static_cast<int>(max_days) + 2; i++) {
-    status_collector_.Simulate(test_states,
-                               sizeof(test_states) / sizeof(IdleState));
+    status_collector_->Simulate(test_states,
+                                sizeof(test_states) / sizeof(IdleState));
     // Advance the simulated clock by a day.
     baseline += TimeDelta::FromDays(1);
-    status_collector_.SetBaselineTime(baseline);
+    status_collector_->SetBaselineTime(baseline);
   }
   // Set the clock back so the previous simulated times are in the future.
   baseline -= TimeDelta::FromDays(20);
-  status_collector_.SetBaselineTime(baseline);
+  status_collector_->SetBaselineTime(baseline);
 
   // Collect one more data point to trigger pruning.
-  status_collector_.Simulate(test_states, 1);
+  status_collector_->Simulate(test_states, 1);
 
   // Check that we don't exceed the max number of periods.
   status_.clear_active_period();
-  status_collector_.GetStatus(&status_);
+  GetStatus();
   EXPECT_LT(status_.active_period_size(), static_cast<int>(max_days));
 }
 
 TEST_F(DeviceStatusCollectorTest, ActivityTimesDisabledByDefault) {
   // If the pref for collecting device activity times isn't explicitly turned
   // on, no data on activity times should be reported.
 
   IdleState test_states[] = {
     IDLE_STATE_ACTIVE,
     IDLE_STATE_ACTIVE,
     IDLE_STATE_ACTIVE
   };
-  status_collector_.Simulate(test_states,
-                             sizeof(test_states) / sizeof(IdleState));
-  status_collector_.GetStatus(&status_);
+  status_collector_->Simulate(test_states,
+                              sizeof(test_states) / sizeof(IdleState));
+  GetStatus();
   EXPECT_EQ(0, status_.active_period_size());
   EXPECT_EQ(0, GetActiveMilliseconds(status_));
 }
 
 TEST_F(DeviceStatusCollectorTest, ActivityCrossingMidnight) {
   IdleState test_states[] = {
     IDLE_STATE_ACTIVE
   };
   cros_settings_->SetBoolean(chromeos::kReportDeviceActivityTimes, true);
 
   // Set the baseline time to 10 seconds after midnight.
-  status_collector_.SetBaselineTime(
+  status_collector_->SetBaselineTime(
       Time::Now().LocalMidnight() + TimeDelta::FromSeconds(10));
 
-  status_collector_.Simulate(test_states, 1);
-  status_collector_.GetStatus(&status_);
+  status_collector_->Simulate(test_states, 1);
+  GetStatus();
   ASSERT_EQ(2, status_.active_period_size());
 
   em::ActiveTimePeriod period0 = status_.active_period(0);
   em::ActiveTimePeriod period1 = status_.active_period(1);
   EXPECT_EQ(ActivePeriodMilliseconds() - 10000, period0.active_duration());
   EXPECT_EQ(10000, period1.active_duration());
 
   em::TimePeriod time_period0 = period0.time_period();
   em::TimePeriod time_period1 = period1.time_period();
 
   EXPECT_EQ(time_period0.end_timestamp(), time_period1.start_timestamp());
 
   // Ensure that the start and end times for the period are a day apart.
   EXPECT_EQ(time_period0.end_timestamp() - time_period0.start_timestamp(),
             kMillisecondsPerDay);
   EXPECT_EQ(time_period1.end_timestamp() - time_period1.start_timestamp(),
             kMillisecondsPerDay);
 }
 
 TEST_F(DeviceStatusCollectorTest, DevSwitchBootMode) {
   // Test that boot mode data is not reported if the pref is not turned on.
-  status_collector_.GetStatus(&status_);
-  EXPECT_EQ(false, status_.has_boot_mode());
-
   EXPECT_CALL(statistics_provider_,
               GetMachineStatistic("devsw_boot", NotNull()))
       .WillRepeatedly(DoAll(SetArgPointee<1>("0"), Return(true)));
-  EXPECT_EQ(false, status_.has_boot_mode());
+  GetStatus();
+  EXPECT_FALSE(status_.has_boot_mode());
 
   // Turn the pref on, and check that the status is reported iff the
   // statistics provider returns valid data.
   cros_settings_->SetBoolean(chromeos::kReportDeviceBootMode, true);
 
   EXPECT_CALL(statistics_provider_,
               GetMachineStatistic("devsw_boot", NotNull()))
       .WillOnce(DoAll(SetArgPointee<1>("(error)"), Return(true)));
-  status_collector_.GetStatus(&status_);
-  EXPECT_EQ(false, status_.has_boot_mode());
+  GetStatus();
+  EXPECT_FALSE(status_.has_boot_mode());
 
   EXPECT_CALL(statistics_provider_,
               GetMachineStatistic("devsw_boot", NotNull()))
       .WillOnce(DoAll(SetArgPointee<1>(" "), Return(true)));
-  status_collector_.GetStatus(&status_);
-  EXPECT_EQ(false, status_.has_boot_mode());
+  GetStatus();
+  EXPECT_FALSE(status_.has_boot_mode());
 
   EXPECT_CALL(statistics_provider_,
               GetMachineStatistic("devsw_boot", NotNull()))
       .WillOnce(DoAll(SetArgPointee<1>("0"), Return(true)));
-  status_collector_.GetStatus(&status_);
+  GetStatus();
   EXPECT_EQ("Verified", status_.boot_mode());
 
   EXPECT_CALL(statistics_provider_,
               GetMachineStatistic("devsw_boot", NotNull()))
       .WillOnce(DoAll(SetArgPointee<1>("1"), Return(true)));
-  status_collector_.GetStatus(&status_);
+  GetStatus();
   EXPECT_EQ("Dev", status_.boot_mode());
 }
 
 TEST_F(DeviceStatusCollectorTest, VersionInfo) {
   // When the pref to collect this data is not enabled, expect that none of
   // the fields are present in the protobuf.
-  status_collector_.GetStatus(&status_);
-  EXPECT_EQ(false, status_.has_browser_version());
-  EXPECT_EQ(false, status_.has_os_version());
-  EXPECT_EQ(false, status_.has_firmware_version());
+  GetStatus();
+  EXPECT_FALSE(status_.has_browser_version());
+  EXPECT_FALSE(status_.has_os_version());
+  EXPECT_FALSE(status_.has_firmware_version());
 
   cros_settings_->SetBoolean(chromeos::kReportDeviceVersionInfo, true);
-  status_collector_.GetStatus(&status_);
-  EXPECT_EQ(true, status_.has_browser_version());
-  EXPECT_EQ(true, status_.has_os_version());
-  EXPECT_EQ(true, status_.has_firmware_version());
+  GetStatus();
+  EXPECT_TRUE(status_.has_browser_version());
+  EXPECT_TRUE(status_.has_os_version());
+  EXPECT_TRUE(status_.has_firmware_version());
 
   // Check that the browser version is not empty. OS version & firmware
   // don't have any reasonable values inside the unit test, so those
   // aren't checked.
   EXPECT_NE("", status_.browser_version());
 }
 
+TEST_F(DeviceStatusCollectorTest, Location) {
+  content::Geoposition valid_fix;
+  valid_fix.latitude = 4.3;
+  valid_fix.longitude = -7.8;
+  valid_fix.accuracy = 3.;
+  valid_fix.timestamp = Time::Now();
+
+  content::Geoposition invalid_fix;
+  invalid_fix.error_code =
+      content::Geoposition::ERROR_CODE_POSITION_UNAVAILABLE;
+  invalid_fix.timestamp = Time::Now();
+
+  // Check that when device location reporting is disabled, no location is
+  // reported.
+  SetMockPositionToReturnNext(valid_fix);
+  CheckThatNoLocationIsReported();
+
+  // Check that when device location reporting is enabled and a valid fix is
+  // available, the location is reported and is stored in local state.
+  SetMockPositionToReturnNext(valid_fix);
+  cros_settings_->SetBoolean(chromeos::kReportDeviceLocation, true);
+  EXPECT_FALSE(prefs_.GetDictionary(prefs::kDeviceLocation)->empty());
+  CheckThatAValidLocationIsReported();
+
+  // Restart the status collector. Check that the last known location has been
+  // retrieved from local state without requesting a geolocation update.
+  SetMockPositionToReturnNext(valid_fix);
+  RestartStatusCollector();
+  CheckThatAValidLocationIsReported();
+  EXPECT_TRUE(mock_position_to_return_next.get());
+
+  // Check that after disabling location reporting again, the last known
+  // location has been cleared from local state and is no longer reported.
+  SetMockPositionToReturnNext(valid_fix);
+  cros_settings_->SetBoolean(chromeos::kReportDeviceLocation, false);
+  // Allow the new pref to propagate to the status collector.
+  message_loop_.RunAllPending();
+  EXPECT_TRUE(prefs_.GetDictionary(prefs::kDeviceLocation)->empty());
+  CheckThatNoLocationIsReported();
+
+  // Check that after enabling location reporting again, an error is reported
+  // if no valid fix is available.
+  SetMockPositionToReturnNext(invalid_fix);
+  cros_settings_->SetBoolean(chromeos::kReportDeviceLocation, true);
+  // Allow the new pref to propagate to the status collector.
+  message_loop_.RunAllPending();
+  CheckThatALocationErrorIsReported();
+}
+
 }  // namespace policy