Handles unknown signin status and collect more stats.

chrome/browser/metrics/signin_status_metrics_provider_unittest.cc

 // 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 "chrome/browser/metrics/signin_status_metrics_provider.h"
 
 #include <string>
 
 #include "base/files/file_path.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 TEST(SigninStatusMetricsProvider, UpdateInitialSigninStatus) {
   SigninStatusMetricsProvider metrics_provider(true);
   metrics_provider.UpdateInitialSigninStatus(2, 2);
   EXPECT_EQ(SigninStatusMetricsProvider::ALL_PROFILES_SIGNED_IN,
             metrics_provider.GetSigninStatusForTesting());
   metrics_provider.UpdateInitialSigninStatus(2, 0);
   EXPECT_EQ(SigninStatusMetricsProvider::ALL_PROFILES_NOT_SIGNED_IN,
             metrics_provider.GetSigninStatusForTesting());
   metrics_provider.UpdateInitialSigninStatus(2, 1);
   EXPECT_EQ(SigninStatusMetricsProvider::MIXED_SIGNIN_STATUS,
             metrics_provider.GetSigninStatusForTesting());
-  metrics_provider.UpdateInitialSigninStatus(0, 0);
-  EXPECT_EQ(SigninStatusMetricsProvider::UNKNOWN_SIGNIN_STATUS,
-            metrics_provider.GetSigninStatusForTesting());
 }
 
 #if !defined(OS_ANDROID)
 TEST(SigninStatusMetricsProvider, UpdateStatusWhenBrowserAdded) {
   SigninStatusMetricsProvider metrics_provider(true);
 
   // Initial status is all signed in and then a signed-in browser is opened.
   metrics_provider.UpdateInitialSigninStatus(2, 2);
   metrics_provider.UpdateStatusWhenBrowserAdded(true);
   EXPECT_EQ(SigninStatusMetricsProvider::ALL_PROFILES_SIGNED_IN,
@@ skipping 57 matching lines @@
   metrics_provider.GoogleSignedOut(std::string(), std::string());
   EXPECT_EQ(SigninStatusMetricsProvider::MIXED_SIGNIN_STATUS,
             metrics_provider.GetSigninStatusForTesting());
 
   // Initial status is mixed and then one of the profiles is signed out.
   metrics_provider.UpdateInitialSigninStatus(2, 1);
   metrics_provider.GoogleSignedOut(std::string(), std::string());
   EXPECT_EQ(SigninStatusMetricsProvider::MIXED_SIGNIN_STATUS,
             metrics_provider.GetSigninStatusForTesting());
 }