1 files changed, 17 insertions, 0 deletions
diff --git a/base/ios/device_util_unittest.mm b/base/ios/device_util_unittest.mm
index 12bfe09..8d69db2 100644
--- a/base/ios/device_util_unittest.mm
+++ b/base/ios/device_util_unittest.mm
@@ -22,6 +22,7 @@ void CleanNSUserDefaultsForDeviceId() {
   NSUserDefaults* defaults = [NSUserDefaults standardUserDefaults];
   [defaults removeObjectForKey:@"ChromeClientID"];
   [defaults removeObjectForKey:@"ChromiumClientID"];
+  [defaults removeObjectForKey:@"ClientIDGenerationHardwareType"];
   [defaults synchronize];
 }
 
@@ -102,4 +103,20 @@ TEST_F(DeviceUtilTest, CheckMigrationFromZero) {
   CleanNSUserDefaultsForDeviceId();
 }
 
+TEST_F(DeviceUtilTest, CheckDeviceMigration) {
+  CleanNSUserDefaultsForDeviceId();
+
+  NSUserDefaults* defaults = [NSUserDefaults standardUserDefaults];
+  [defaults setObject:@"10000000-0000-0000-0000-000000000000"
+               forKey:@"ChromeClientID"];
+  [defaults synchronize];
+  std::string base_id = ios::device_util::GetDeviceIdentifier(NULL);
+  [defaults setObject:@"Foo" forKey:@"ClientIDGenerationHardwareType"];
+  [defaults synchronize];
+  std::string new_id = ios::device_util::GetDeviceIdentifier(NULL);
+  EXPECT_NE(new_id, base_id);
+
+  CleanNSUserDefaultsForDeviceId();
+}
+
 }  // namespace