1 files changed, 53 insertions, 0 deletions
diff --git a/chromium/components/metrics/cloned_install_detector_unittest.cc b/chromium/components/metrics/cloned_install_detector_unittest.cc
new file mode 100644
index 00000000000..91b24e8bf57
--- /dev/null
+++ b/chromium/components/metrics/cloned_install_detector_unittest.cc
@@ -0,0 +1,53 @@
+// Copyright 2014 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 "components/metrics/cloned_install_detector.h"
+
+#include "components/metrics/machine_id_provider.h"
+#include "components/metrics/metrics_pref_names.h"
+#include "components/metrics/metrics_state_manager.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());
+
+  scoped_ptr<ClonedInstallDetector> detector(
+      new ClonedInstallDetector(MachineIdProvider::CreateInstance()));
+
+  detector->SaveMachineId(&prefs, kTestRawId);
+
+  EXPECT_EQ(kTestHashedId, prefs.GetInteger(prefs::kMetricsMachineId));
+}
+
+TEST(ClonedInstallDetectorTest, DetectClone) {
+  TestingPrefServiceSimple prefs;
+  MetricsStateManager::RegisterPrefs(prefs.registry());
+
+  // Save a machine id that will cause a clone to be detected.
+  prefs.SetInteger(prefs::kMetricsMachineId, kTestHashedId + 1);
+
+  scoped_ptr<ClonedInstallDetector> detector(
+      new ClonedInstallDetector(MachineIdProvider::CreateInstance()));
+
+  detector->SaveMachineId(&prefs, kTestRawId);
+
+  EXPECT_TRUE(prefs.GetBoolean(prefs::kMetricsResetIds));
+}
+
+}  // namespace metrics