Add some basic tests for metrics_daemon.

src/platform/metrics/metrics_daemon_test.cc

Index: src/platform/metrics/metrics_daemon_test.cc
diff --git a/src/platform/metrics/metrics_daemon_test.cc b/src/platform/metrics/metrics_daemon_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..043be724914c5e0e8393c4fa40d21afe37005173
--- /dev/null
+++ b/src/platform/metrics/metrics_daemon_test.cc
@@ -0,0 +1,459 @@
+// Copyright (c) 2010 The Chromium OS 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 "metrics_daemon.h"
+
+#include <sys/file.h>
+
+#include <base/eintr_wrapper.h>
+#include <base/file_util.h>
+#include <base/logging.h>
+#include <base/string_util.h>
+#include <gtest/gtest.h>
+
+static const char kTestDailyUseRecordFile[] = "/tmp/daily-usage-test";
+static const char kDoesNotExistFile[] = "/does/not/exist";
+
+static const int kSecondsPerDay = 24 * 60 * 60;
+
+class MetricsDaemonTest : public testing::Test {
+ protected:
+  virtual void SetUp() {
+    daemon_.Init(true);
+    daemon_.daily_use_record_file_ = kTestDailyUseRecordFile;
+
+    // The test fixture object will be used by the log message handler.
+    daemon_test_ = this;
+    logging::SetLogMessageHandler(LogMessageHandler);
+  }
+
+  virtual void TearDown() {
+    logging::SetLogMessageHandler(NULL);
+    daemon_test_ = NULL;
+    file_util::Delete(FilePath(kTestDailyUseRecordFile), false);
+  }
+
+  // Collects log messages in the |daemon_log_| member string so that
+  // they can be analyzed for errors and expected behavior.
+  static bool LogMessageHandler(int severity, const std::string& str) {
+    daemon_test_->daemon_log_.append(str);
+    daemon_test_->daemon_log_.append("\n");
+
+    // Returning true would mute the log.
+    return false;
+  }
+
+  // Returns true if the daemon log contains |pattern|, false otherwise.
+  bool LogContains(const std::string& pattern) {
+    return daemon_log_.find(pattern) != std::string::npos;
+  }
+
+  // Resets the daemon log history to empty.
+  void LogReset() {
+    daemon_log_.clear();
+  }
+
+  // Returns true if the specified metric is found in the generated
+  // log so far, false otherwise.
+  bool AssertMetricGenerated(const std::string& name, int sample,
+                             int min, int max, int buckets) {
+    return LogContains(StringPrintf("received metric: %s %d %d %d %d",
+                                    name.c_str(), sample, min, max, buckets));
+  }
+
+  // Returns true if the specified daily use time metric is found in
+  // the generated log so far, false otherwise.
+  bool AssertDailyUseTimeMetric(int sample) {
+    return AssertMetricGenerated(
+        MetricsDaemon::kMetricDailyUseTimeName, sample,
+        MetricsDaemon::kMetricDailyUseTimeMin,
+        MetricsDaemon::kMetricDailyUseTimeMax,
+        MetricsDaemon::kMetricDailyUseTimeBuckets);
+  }
+
+  // Returns true if the specified time to network drop metric is
+  // found in the generated log so far, false otherwise.
+  bool AssertTimeToNetworkDropMetric(int sample) {
+    return AssertMetricGenerated(
+        MetricsDaemon::kMetricTimeToNetworkDropName, sample,
+        MetricsDaemon::kMetricTimeToNetworkDropMin,
+        MetricsDaemon::kMetricTimeToNetworkDropMax,
+        MetricsDaemon::kMetricTimeToNetworkDropBuckets);
+  }
+
+  // Returns true if no metric can be found in the generated log so
+  // far, false otherwise.
+  bool NoMetricGenerated() {
+    return !LogContains("received metric");
+  }
+
+  // Asserts that the daily use record file contains the specified
+  // contents.
+  testing::AssertionResult AssertDailyUseRecord(const char* expr_day,
+                                                const char* expr_seconds,
+                                                int expected_day,
+                                                int expected_seconds) {
+    int fd = HANDLE_EINTR(open(daemon_.daily_use_record_file_, O_RDONLY));
+    if (fd < 0) {
+      testing::Message msg;
+      msg << "Unable to open " << daemon_.daily_use_record_file_;
+      return testing::AssertionFailure(msg);
+    }
+
+    MetricsDaemon::UseRecord record;
+    if (!file_util::ReadFromFD(fd, reinterpret_cast<char*>(&record),
+                               sizeof(record))) {
+      testing::Message msg;
+      msg << "Unable to read " << sizeof(record) << " bytes from "
+          << daemon_.daily_use_record_file_;
+      HANDLE_EINTR(close(fd));
+      return testing::AssertionFailure(msg);
+    }
+
+    if (record.day_ != expected_day || record.seconds_ != expected_seconds) {
+      testing::Message msg;
+      msg << "actual use record (" << record.day_ << ", " << record.seconds_
+          << ") expected (" << expected_day << ", " << expected_seconds << ")";
+      HANDLE_EINTR(close(fd));
+      return testing::AssertionFailure(msg);
+    }
+
+    HANDLE_EINTR(close(fd));
+    return testing::AssertionSuccess();
+  }
+
+  bool NoOrEmptyUseRecordFile() {

[kmixter1, 2010/05/10 19:06:31]

Function names should start with verb

+    FilePath record_file(daemon_.daily_use_record_file_);
+    int64 record_file_size;
+    return !file_util::PathExists(record_file) ||
+        (file_util::GetFileSize(record_file, &record_file_size) &&
+         record_file_size == 0);
+  }
+
+  // Pointer to the current test fixture.
+  static MetricsDaemonTest* daemon_test_;
+
+  // The MetricsDaemon under test.
+  MetricsDaemon daemon_;
+
+  // The accumulated metrics daemon log.
+  std::string daemon_log_;
+};
+
+// static
+MetricsDaemonTest* MetricsDaemonTest::daemon_test_ = NULL;
+
+TEST_F(MetricsDaemonTest, LogDailyUseRecord) {
+  EXPECT_EQ(0, daemon_.daily_use_day_last_);
+  EXPECT_TRUE(NoOrEmptyUseRecordFile());
+
+  daemon_.LogDailyUseRecord(/* day */ 5, /* seconds */ 120);
+  EXPECT_PRED_FORMAT2(AssertDailyUseRecord, /* day */ 5, /* seconds */ 120);
+  EXPECT_EQ(5, daemon_.daily_use_day_last_);
+
+  daemon_.LogDailyUseRecord(/* day */ 5, /* seconds */ 0);
+  EXPECT_PRED_FORMAT2(AssertDailyUseRecord, /* day */ 5, /* seconds */ 120);
+  EXPECT_EQ(5, daemon_.daily_use_day_last_);
+
+  daemon_.LogDailyUseRecord(/* day */ 5, /* seconds */ 240);
+  EXPECT_PRED_FORMAT2(AssertDailyUseRecord, /* day */ 5, /* seconds */ 360);
+  EXPECT_EQ(5, daemon_.daily_use_day_last_);
+
+  EXPECT_TRUE(NoMetricGenerated());
+
+  LogReset();
+  daemon_.LogDailyUseRecord(/* day */ 6, /* seconds */ 0);
+  EXPECT_TRUE(NoOrEmptyUseRecordFile());
+  EXPECT_TRUE(AssertDailyUseTimeMetric(/* sample */ 6));
+  EXPECT_EQ(6, daemon_.daily_use_day_last_);
+
+  // Tests rounding use time to the closest minute.
+  daemon_.LogDailyUseRecord(/* day */ 6, /* seconds */ 90);
+  EXPECT_PRED_FORMAT2(AssertDailyUseRecord, /* day */ 6, /* seconds */ 90);
+  EXPECT_EQ(6, daemon_.daily_use_day_last_);
+
+  LogReset();
+  daemon_.LogDailyUseRecord(/* day */ 7, /* seconds */ 89);
+  EXPECT_PRED_FORMAT2(AssertDailyUseRecord, /* day */ 7, /* seconds */ 89);
+  EXPECT_TRUE(AssertDailyUseTimeMetric(/* sample */ 2));
+  EXPECT_EQ(7, daemon_.daily_use_day_last_);
+
+  LogReset();
+  daemon_.LogDailyUseRecord(/* day */ 6, /* seconds */ 15);
+  EXPECT_PRED_FORMAT2(AssertDailyUseRecord, /* day */ 6, /* seconds */ 15);
+  EXPECT_TRUE(AssertDailyUseTimeMetric(/* sample */ 1));
+  EXPECT_EQ(6, daemon_.daily_use_day_last_);
+
+  // Checks that the daemon doesn't die badly if the file can't be
+  // created.
+  LogReset();
+  daemon_.daily_use_record_file_ = kDoesNotExistFile;
+  daemon_.LogDailyUseRecord(10, 20);
+  EXPECT_TRUE(LogContains("Unable to open the daily use file: "
+                          "No such file or directory"));
+  EXPECT_EQ(6, daemon_.daily_use_day_last_);
+  file_util::Delete(FilePath(kDoesNotExistFile), false);
+}
+
+TEST_F(MetricsDaemonTest, LookupNetworkState) {
+  EXPECT_EQ(MetricsDaemon::kNetworkStateOnline,
+            daemon_.LookupNetworkState("online"));
+  EXPECT_EQ(MetricsDaemon::kNetworkStateOffline,
+            daemon_.LookupNetworkState("offline"));
+  EXPECT_EQ(MetricsDaemon::kUnknownNetworkState,
+            daemon_.LookupNetworkState("somestate"));
+}
+
+TEST_F(MetricsDaemonTest, LookupPowerState) {
+  EXPECT_EQ(MetricsDaemon::kPowerStateOn,
+            daemon_.LookupPowerState("on"));
+  EXPECT_EQ(MetricsDaemon::kPowerStateMem,
+            daemon_.LookupPowerState("mem"));
+  EXPECT_EQ(MetricsDaemon::kUnknownPowerState,
+            daemon_.LookupPowerState("somestate"));
+}
+
+TEST_F(MetricsDaemonTest, LookupScreenSaverState) {
+  EXPECT_EQ(MetricsDaemon::kScreenSaverStateLocked,
+            daemon_.LookupScreenSaverState("locked"));
+  EXPECT_EQ(MetricsDaemon::kScreenSaverStateUnlocked,
+            daemon_.LookupScreenSaverState("unlocked"));
+  EXPECT_EQ(MetricsDaemon::kUnknownScreenSaverState,
+            daemon_.LookupScreenSaverState("somestate"));
+}
+
+TEST_F(MetricsDaemonTest, LookupSessionState) {
+  EXPECT_EQ(MetricsDaemon::kSessionStateStarted,
+            daemon_.LookupSessionState("started"));
+  EXPECT_EQ(MetricsDaemon::kSessionStateStopped,
+            daemon_.LookupSessionState("stopped"));
+  EXPECT_EQ(MetricsDaemon::kUnknownSessionState,
+            daemon_.LookupSessionState("somestate"));
+}
+
+TEST_F(MetricsDaemonTest, NetStateChanged) {
+  EXPECT_EQ(MetricsDaemon::kUnknownNetworkState, daemon_.network_state_);
+  EXPECT_EQ(0, daemon_.network_state_last_);
+  EXPECT_EQ(MetricsDaemon::kUnknownPowerState, daemon_.power_state_);
+
+  daemon_.NetStateChanged("online", /* now */ 10);
+  EXPECT_EQ(MetricsDaemon::kNetworkStateOnline, daemon_.network_state_);
+  EXPECT_EQ(10, daemon_.network_state_last_);
+
+  EXPECT_TRUE(NoMetricGenerated());
+
+  daemon_.NetStateChanged("offline", /* now */ 30);
+  EXPECT_EQ(MetricsDaemon::kNetworkStateOffline, daemon_.network_state_);
+  EXPECT_EQ(30, daemon_.network_state_last_);
+  EXPECT_TRUE(AssertTimeToNetworkDropMetric(/* sample */ 20));
+
+  LogReset();
+  daemon_.NetStateChanged("online", /* now */ 60);
+  EXPECT_EQ(MetricsDaemon::kNetworkStateOnline, daemon_.network_state_);
+  EXPECT_EQ(60, daemon_.network_state_last_);
+
+  daemon_.PowerStateChanged("mem", /* now */ 80);
+  EXPECT_EQ(MetricsDaemon::kPowerStateMem, daemon_.power_state_);
+  EXPECT_EQ(MetricsDaemon::kNetworkStateOnline, daemon_.network_state_);
+  EXPECT_EQ(60, daemon_.network_state_last_);
+
+  daemon_.NetStateChanged("offline", /* now */ 85);
+  EXPECT_EQ(MetricsDaemon::kNetworkStateOffline, daemon_.network_state_);
+  EXPECT_EQ(85, daemon_.network_state_last_);
+
+  daemon_.NetStateChanged("somestate", /* now */ 90);
+  EXPECT_EQ(MetricsDaemon::kUnknownNetworkState, daemon_.network_state_);
+  EXPECT_EQ(90, daemon_.network_state_last_);
+
+  daemon_.NetStateChanged("offline", /* now */ 95);
+  EXPECT_EQ(MetricsDaemon::kNetworkStateOffline, daemon_.network_state_);
+  EXPECT_EQ(95, daemon_.network_state_last_);
+
+  daemon_.PowerStateChanged("on", /* now */ 100);
+  EXPECT_EQ(MetricsDaemon::kPowerStateOn, daemon_.power_state_);
+  EXPECT_EQ(MetricsDaemon::kNetworkStateOffline, daemon_.network_state_);
+  EXPECT_EQ(95, daemon_.network_state_last_);
+
+  daemon_.NetStateChanged("online", /* now */ 105);
+  EXPECT_EQ(MetricsDaemon::kNetworkStateOnline, daemon_.network_state_);
+  EXPECT_EQ(105, daemon_.network_state_last_);
+
+  EXPECT_TRUE(NoMetricGenerated());
+
+  daemon_.NetStateChanged("offline", /* now */ 108);
+  EXPECT_EQ(MetricsDaemon::kNetworkStateOffline, daemon_.network_state_);
+  EXPECT_EQ(108, daemon_.network_state_last_);
+  EXPECT_TRUE(AssertTimeToNetworkDropMetric(/* sample */ 3));
+}
+
+TEST_F(MetricsDaemonTest, PowerStateChanged) {
+  EXPECT_EQ(MetricsDaemon::kUnknownPowerState, daemon_.power_state_);
+  EXPECT_FALSE(daemon_.user_active_);
+  EXPECT_EQ(0, daemon_.user_active_last_);
+  EXPECT_EQ(0, daemon_.daily_use_day_last_);
+  EXPECT_TRUE(NoOrEmptyUseRecordFile());
+
+  daemon_.SetUserActiveState(/* active */ true, 7 * kSecondsPerDay + 15);
+  EXPECT_TRUE(daemon_.user_active_);
+  EXPECT_EQ(7 * kSecondsPerDay + 15, daemon_.user_active_last_);
+  EXPECT_EQ(7, daemon_.daily_use_day_last_);
+  EXPECT_TRUE(NoOrEmptyUseRecordFile());
+
+  daemon_.PowerStateChanged("mem", 7 * kSecondsPerDay + 45);
+  EXPECT_EQ(MetricsDaemon::kPowerStateMem, daemon_.power_state_);
+  EXPECT_FALSE(daemon_.user_active_);
+  EXPECT_EQ(7 * kSecondsPerDay + 45, daemon_.user_active_last_);
+  EXPECT_PRED_FORMAT2(AssertDailyUseRecord, /* day */ 7, /* seconds */ 30);
+
+  daemon_.PowerStateChanged("on", 7 * kSecondsPerDay + 85);
+  EXPECT_EQ(MetricsDaemon::kPowerStateOn, daemon_.power_state_);
+  EXPECT_FALSE(daemon_.user_active_);
+  EXPECT_EQ(7 * kSecondsPerDay + 45, daemon_.user_active_last_);
+  EXPECT_PRED_FORMAT2(AssertDailyUseRecord, /* day */ 7, /* seconds */ 30);
+
+  daemon_.PowerStateChanged("otherstate", 7 * kSecondsPerDay + 185);
+  EXPECT_EQ(MetricsDaemon::kUnknownPowerState, daemon_.power_state_);
+  EXPECT_FALSE(daemon_.user_active_);
+  EXPECT_EQ(7 * kSecondsPerDay + 185, daemon_.user_active_last_);
+  EXPECT_PRED_FORMAT2(AssertDailyUseRecord, /* day */ 7, /* seconds */ 30);
+
+  EXPECT_TRUE(NoMetricGenerated());
+}
+
+TEST_F(MetricsDaemonTest, PublishMetric) {
+  daemon_.PublishMetric("Dummy.Metric", /* sample */ 3,
+                        /* min */ 1, /* max */ 100, /* buckets */ 50);
+  EXPECT_TRUE(AssertMetricGenerated("Dummy.Metric", 3, 1, 100, 50));
+}
+
+TEST_F(MetricsDaemonTest, ScreenSaverStateChanged) {
+  EXPECT_EQ(MetricsDaemon::kUnknownScreenSaverState,
+            daemon_.screensaver_state_);
+  EXPECT_FALSE(daemon_.user_active_);
+  EXPECT_EQ(0, daemon_.user_active_last_);
+  EXPECT_EQ(0, daemon_.daily_use_day_last_);
+  EXPECT_TRUE(NoOrEmptyUseRecordFile());
+
+  daemon_.ScreenSaverStateChanged("locked", 5 * kSecondsPerDay + 10);
+  EXPECT_EQ(MetricsDaemon::kScreenSaverStateLocked,
+            daemon_.screensaver_state_);
+  EXPECT_FALSE(daemon_.user_active_);
+  EXPECT_EQ(5 * kSecondsPerDay + 10, daemon_.user_active_last_);
+  EXPECT_EQ(5, daemon_.daily_use_day_last_);
+  EXPECT_TRUE(NoOrEmptyUseRecordFile());
+
+  daemon_.ScreenSaverStateChanged("unlocked", 5 * kSecondsPerDay + 100);
+  EXPECT_EQ(MetricsDaemon::kScreenSaverStateUnlocked,
+            daemon_.screensaver_state_);
+  EXPECT_TRUE(daemon_.user_active_);
+  EXPECT_EQ(5 * kSecondsPerDay + 100, daemon_.user_active_last_);
+  EXPECT_TRUE(NoOrEmptyUseRecordFile());
+
+  daemon_.ScreenSaverStateChanged("otherstate", 5 * kSecondsPerDay + 300);
+  EXPECT_EQ(MetricsDaemon::kUnknownScreenSaverState,
+            daemon_.screensaver_state_);
+  EXPECT_FALSE(daemon_.user_active_);
+  EXPECT_EQ(5 * kSecondsPerDay + 300, daemon_.user_active_last_);
+  EXPECT_PRED_FORMAT2(AssertDailyUseRecord, /* day */ 5, /* seconds */ 200);
+
+  EXPECT_TRUE(NoMetricGenerated());
+}
+
+TEST_F(MetricsDaemonTest, SessionStateChanged) {
+  EXPECT_EQ(MetricsDaemon::kUnknownSessionState, daemon_.session_state_);
+  EXPECT_FALSE(daemon_.user_active_);
+  EXPECT_EQ(0, daemon_.user_active_last_);
+  EXPECT_EQ(0, daemon_.daily_use_day_last_);
+  EXPECT_TRUE(NoOrEmptyUseRecordFile());
+
+  daemon_.SessionStateChanged("started", 15 * kSecondsPerDay + 20);
+  EXPECT_EQ(MetricsDaemon::kSessionStateStarted, daemon_.session_state_);
+  EXPECT_TRUE(daemon_.user_active_);
+  EXPECT_EQ(15 * kSecondsPerDay + 20, daemon_.user_active_last_);
+  EXPECT_EQ(15, daemon_.daily_use_day_last_);
+  EXPECT_TRUE(NoOrEmptyUseRecordFile());
+
+  daemon_.SessionStateChanged("stopped", 15 * kSecondsPerDay + 150);
+  EXPECT_EQ(MetricsDaemon::kSessionStateStopped, daemon_.session_state_);
+  EXPECT_FALSE(daemon_.user_active_);
+  EXPECT_EQ(15 * kSecondsPerDay + 150, daemon_.user_active_last_);
+  EXPECT_PRED_FORMAT2(AssertDailyUseRecord, /* day */ 15, /* seconds */ 130);
+
+  daemon_.SessionStateChanged("otherstate", 15 * kSecondsPerDay + 300);
+  EXPECT_EQ(MetricsDaemon::kUnknownSessionState, daemon_.session_state_);
+  EXPECT_FALSE(daemon_.user_active_);
+  EXPECT_EQ(15 * kSecondsPerDay + 300, daemon_.user_active_last_);
+  EXPECT_PRED_FORMAT2(AssertDailyUseRecord, /* day */ 15, /* seconds */ 130);
+
+  EXPECT_TRUE(NoMetricGenerated());
+}
+
+TEST_F(MetricsDaemonTest, SetUserActiveState) {
+  EXPECT_FALSE(daemon_.user_active_);
+  EXPECT_EQ(0, daemon_.user_active_last_);
+  EXPECT_EQ(0, daemon_.daily_use_day_last_);
+  EXPECT_TRUE(NoOrEmptyUseRecordFile());
+
+  daemon_.SetUserActiveState(/* active */ false, 5 * kSecondsPerDay + 10);
+  EXPECT_FALSE(daemon_.user_active_);
+  EXPECT_EQ(5 * kSecondsPerDay + 10, daemon_.user_active_last_);
+  EXPECT_EQ(5, daemon_.daily_use_day_last_);
+  EXPECT_TRUE(NoOrEmptyUseRecordFile());
+
+  daemon_.SetUserActiveState(/* active */ true, 6 * kSecondsPerDay + 20);
+  EXPECT_TRUE(daemon_.user_active_);
+  EXPECT_EQ(6 * kSecondsPerDay + 20, daemon_.user_active_last_);
+  EXPECT_EQ(6, daemon_.daily_use_day_last_);
+  EXPECT_TRUE(NoOrEmptyUseRecordFile());
+
+  daemon_.SetUserActiveState(/* active */ true, 6 * kSecondsPerDay + 120);
+  EXPECT_TRUE(daemon_.user_active_);
+  EXPECT_EQ(6 * kSecondsPerDay + 120, daemon_.user_active_last_);
+  EXPECT_EQ(6, daemon_.daily_use_day_last_);
+  EXPECT_PRED_FORMAT2(AssertDailyUseRecord, /* day */ 6, /* seconds */ 100);
+
+  daemon_.SetUserActiveState(/* active */ false, 6 * kSecondsPerDay + 220);
+  EXPECT_FALSE(daemon_.user_active_);
+  EXPECT_EQ(6 * kSecondsPerDay + 220, daemon_.user_active_last_);
+  EXPECT_EQ(6, daemon_.daily_use_day_last_);
+  EXPECT_PRED_FORMAT2(AssertDailyUseRecord, /* day */ 6, /* seconds */ 200);
+
+  EXPECT_TRUE(NoMetricGenerated());
+
+  LogReset();
+  daemon_.SetUserActiveState(/* active */ true, 8 * kSecondsPerDay - 300);
+  EXPECT_TRUE(daemon_.user_active_);
+  EXPECT_EQ(8 * kSecondsPerDay - 300, daemon_.user_active_last_);
+  EXPECT_EQ(7, daemon_.daily_use_day_last_);
+  EXPECT_TRUE(NoOrEmptyUseRecordFile());
+  EXPECT_TRUE(AssertDailyUseTimeMetric(/* sample */ 3));
+
+  LogReset();
+  daemon_.SetUserActiveState(/* active */ false, 8 * kSecondsPerDay + 300);
+  EXPECT_FALSE(daemon_.user_active_);
+  EXPECT_EQ(8 * kSecondsPerDay + 300, daemon_.user_active_last_);
+  EXPECT_EQ(8, daemon_.daily_use_day_last_);
+  EXPECT_PRED_FORMAT2(AssertDailyUseRecord, /* day */ 8, /* seconds */ 600);
+
+  daemon_.SetUserActiveState(/* active */ true, 9 * kSecondsPerDay - 400);
+  EXPECT_TRUE(daemon_.user_active_);
+  EXPECT_EQ(9 * kSecondsPerDay - 400, daemon_.user_active_last_);
+  EXPECT_EQ(8, daemon_.daily_use_day_last_);
+  EXPECT_PRED_FORMAT2(AssertDailyUseRecord, /* day */ 8, /* seconds */ 600);
+
+  EXPECT_TRUE(NoMetricGenerated());
+
+  LogReset();
+  daemon_.SetUserActiveState(/* active */ true, 9 * kSecondsPerDay + 400);
+  EXPECT_TRUE(daemon_.user_active_);
+  EXPECT_EQ(9 * kSecondsPerDay + 400, daemon_.user_active_last_);
+  EXPECT_EQ(9, daemon_.daily_use_day_last_);
+  EXPECT_PRED_FORMAT2(AssertDailyUseRecord, /* day */ 9, /* seconds */ 800);
+  EXPECT_TRUE(AssertDailyUseTimeMetric(/* sample */ 10));
+}
+
+int main(int argc, char **argv) {
+  testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}