Refactor OAuth2TokenService to have profile- and device-based implementations.

chrome/browser/signin/oauth2_token_service_unittest.cc

 // Copyright 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 <string>
+
 #include "base/stringprintf.h"
 #include "chrome/browser/signin/oauth2_token_service.h"
-#include "chrome/browser/signin/oauth2_token_service_factory.h"
+#include "chrome/browser/signin/oauth2_token_service_test_util.h"
 #include "chrome/browser/signin/token_service_factory.h"
 #include "chrome/browser/signin/token_service_unittest.h"
 #include "chrome/common/chrome_notification_types.h"
-#include "content/public/browser/browser_thread.h"
+#include "chrome/test/base/testing_browser_process.h"
 #include "google_apis/gaia/gaia_constants.h"
 #include "google_apis/gaia/google_service_auth_error.h"
 #include "google_apis/gaia/oauth2_access_token_consumer.h"
 #include "net/http/http_status_code.h"
 #include "net/url_request/test_url_fetcher_factory.h"
 #include "net/url_request/url_request_status.h"
+#include "net/url_request/url_request_test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using content::BrowserThread;
 
-static const char kValidTokenResponse[] =
-    "{"
-    "  \"access_token\": \"%s\","
-    "  \"expires_in\": %d,"
-    "  \"token_type\": \"Bearer\""
-    "}";
-
-std::string GetValidTokenResponse(std::string token, int expiration) {
-  return base::StringPrintf(kValidTokenResponse, token.c_str(), expiration);
-}
-
-// A simple testing consumer.
-class TestingOAuth2TokenServiceConsumer : public OAuth2TokenService::Consumer {
- public:
-  TestingOAuth2TokenServiceConsumer()
-      : number_of_correct_tokens_(0),
-        last_error_(GoogleServiceAuthError::AuthErrorNone()),
-        number_of_errors_(0) {}
-  virtual ~TestingOAuth2TokenServiceConsumer() {}
-
-  virtual void OnGetTokenSuccess(const OAuth2TokenService::Request* request,
-                                 const std::string& token,
-                                 const base::Time& expiration_date) OVERRIDE {
-    last_token_ = token;
-    ++number_of_correct_tokens_;
-  }
-
-  virtual void OnGetTokenFailure(const OAuth2TokenService::Request* request,
-                                 const GoogleServiceAuthError& error) OVERRIDE {
-    last_error_ = error;
-    ++number_of_errors_;
-  }
-
-  std::string last_token_;
-  int number_of_correct_tokens_;
-  GoogleServiceAuthError last_error_;
-  int number_of_errors_;
-};
-
 // A testing consumer that retries on error.
 class RetryingTestingOAuth2TokenServiceConsumer
     : public OAuth2TokenService::Consumer {

[Mattias Nissler (ping if slow), 2013/03/26 12:04:32]

drive-by-nit: Seems like this class is mostly redundant and could be simplified
by deriving from TestingOAuth2ServiceConsumer.

[David Roche, 2013/03/27 05:09:51]

Done.

  public:
   RetryingTestingOAuth2TokenServiceConsumer(
       OAuth2TokenService* oauth2_service)
       : oauth2_service_(oauth2_service),
         number_of_correct_tokens_(0),
         last_error_(GoogleServiceAuthError::AuthErrorNone()),
         number_of_errors_(0) {}
   virtual ~RetryingTestingOAuth2TokenServiceConsumer() {}
 
   virtual void OnGetTokenSuccess(const OAuth2TokenService::Request* request,
@@ skipping 12 matching lines @@
   }
 
   OAuth2TokenService* oauth2_service_;
   scoped_ptr<OAuth2TokenService::Request> request_;
   std::string last_token_;
   int number_of_correct_tokens_;
   GoogleServiceAuthError last_error_;
   int number_of_errors_;
 };
 
+class TestOAuth2TokenService : public OAuth2TokenService {
+ public:
+  explicit TestOAuth2TokenService(net::URLRequestContextGetter* getter)
+    : OAuth2TokenService(getter) {

[Mattias Nissler (ping if slow), 2013/03/26 12:04:32]

nit: 4 spaces indentation.

[David Roche, 2013/03/27 05:09:51]

Done.

+  }

[Mattias Nissler (ping if slow), 2013/03/26 12:04:32]

nit: newline

[David Roche, 2013/03/27 05:09:51]

Done.

+  // For testing: set the refresh token to be used.
+  void set_refresh_token(const std::string& refresh_token) {
+    refresh_token_ = refresh_token;
+  }

[Mattias Nissler (ping if slow), 2013/03/26 12:04:32]

nit: newline

[David Roche, 2013/03/27 05:09:51]

Done.

+ protected:
+  std::string GetRefreshToken() OVERRIDE {
+    return refresh_token_;
+  }

[Mattias Nissler (ping if slow), 2013/03/26 12:04:32]

nit: newline:

[David Roche, 2013/03/27 05:09:51]

Done.

+ private:
+  std::string refresh_token_;
+};
+
 class OAuth2TokenServiceTest : public TokenServiceTestHarness {
  public:
-  OAuth2TokenServiceTest() {}
+  OAuth2TokenServiceTest()
+      : request_context_getter_(new net::TestURLRequestContextGetter(
+            message_loop_.message_loop_proxy())) {
+  }
 
   virtual void SetUp() OVERRIDE {
     TokenServiceTestHarness::SetUp();
     io_thread_.reset(new content::TestBrowserThread(content::BrowserThread::IO,
                                                     &message_loop_));
-    service_->UpdateCredentials(credentials_);
-    profile_->CreateRequestContext();
-    oauth2_service_ = OAuth2TokenServiceFactory::GetForProfile(profile_.get());
+    oauth2_service_.reset(new TestOAuth2TokenService(request_context_getter_));
   }
 
   virtual void TearDown() OVERRIDE {
     TokenServiceTestHarness::TearDown();
   }
 
  protected:
   scoped_ptr<content::TestBrowserThread> io_thread_;
+  scoped_refptr<net::TestURLRequestContextGetter> request_context_getter_;
   net::TestURLFetcherFactory factory_;
-  OAuth2TokenService* oauth2_service_;
+  scoped_ptr<TestOAuth2TokenService> oauth2_service_;
   TestingOAuth2TokenServiceConsumer consumer_;
 };
 
 TEST_F(OAuth2TokenServiceTest, NoOAuth2RefreshToken) {
   scoped_ptr<OAuth2TokenService::Request> request(
       oauth2_service_->StartRequest(std::set<std::string>(), &consumer_));
   message_loop_.RunUntilIdle();
 
   EXPECT_EQ(0, consumer_.number_of_correct_tokens_);
   EXPECT_EQ(1, consumer_.number_of_errors_);
 }
 
 TEST_F(OAuth2TokenServiceTest, FailureShouldNotRetry) {
-  service_->IssueAuthTokenForTest(GaiaConstants::kGaiaOAuth2LoginRefreshToken,
-                                  "refreshToken");
-  scoped_ptr<OAuth2TokenService::Request> request(oauth2_service_->StartRequest(
-      std::set<std::string>(), &consumer_));
+  oauth2_service_->set_refresh_token("refreshToken");
+  scoped_ptr<OAuth2TokenService::Request> request(
+      oauth2_service_->StartRequest(std::set<std::string>(), &consumer_));
   message_loop_.RunUntilIdle();
 
   EXPECT_EQ(0, consumer_.number_of_correct_tokens_);
   EXPECT_EQ(0, consumer_.number_of_errors_);
   net::TestURLFetcher* fetcher = factory_.GetFetcherByID(0);
   EXPECT_TRUE(fetcher);
   fetcher->set_response_code(net::HTTP_UNAUTHORIZED);
   fetcher->SetResponseString("");
   fetcher->delegate()->OnURLFetchComplete(fetcher);
   EXPECT_EQ(0, consumer_.number_of_correct_tokens_);
   EXPECT_EQ(1, consumer_.number_of_errors_);
   EXPECT_EQ(fetcher, factory_.GetFetcherByID(0));
 }
 
 TEST_F(OAuth2TokenServiceTest, SuccessWithoutCaching) {
-  service_->IssueAuthTokenForTest(GaiaConstants::kGaiaOAuth2LoginRefreshToken,
-                                  "refreshToken");
-  scoped_ptr<OAuth2TokenService::Request> request(oauth2_service_->StartRequest(
-      std::set<std::string>(), &consumer_));
+  oauth2_service_->set_refresh_token("refreshToken");
+  scoped_ptr<OAuth2TokenService::Request> request(
+      oauth2_service_->StartRequest(std::set<std::string>(), &consumer_));
   message_loop_.RunUntilIdle();
 
   EXPECT_EQ(0, consumer_.number_of_correct_tokens_);
   EXPECT_EQ(0, consumer_.number_of_errors_);
   net::TestURLFetcher* fetcher = factory_.GetFetcherByID(0);
   EXPECT_TRUE(fetcher);
   fetcher->set_response_code(net::HTTP_OK);
   fetcher->SetResponseString(GetValidTokenResponse("token", 3600));
   fetcher->delegate()->OnURLFetchComplete(fetcher);
   EXPECT_EQ(1, consumer_.number_of_correct_tokens_);
   EXPECT_EQ(0, consumer_.number_of_errors_);
   EXPECT_EQ("token", consumer_.last_token_);
 }
 
 TEST_F(OAuth2TokenServiceTest, SuccessWithCaching) {
   std::set<std::string> scopes1;
   scopes1.insert("s1");
   scopes1.insert("s2");
   std::set<std::string> scopes1_same;
   scopes1_same.insert("s2");
   scopes1_same.insert("s1");
   std::set<std::string> scopes2;
   scopes2.insert("s3");
 
-  service_->IssueAuthTokenForTest(GaiaConstants::kGaiaOAuth2LoginRefreshToken,
-                                  "refreshToken");
+  oauth2_service_->set_refresh_token("refreshToken");
 
   // First request.
   scoped_ptr<OAuth2TokenService::Request> request(oauth2_service_->StartRequest(
       scopes1, &consumer_));
   message_loop_.RunUntilIdle();
 
   EXPECT_EQ(0, consumer_.number_of_correct_tokens_);
   EXPECT_EQ(0, consumer_.number_of_errors_);
   net::TestURLFetcher* fetcher = factory_.GetFetcherByID(0);
   EXPECT_TRUE(fetcher);
@@ skipping 26 matching lines @@
   EXPECT_TRUE(fetcher);
   fetcher->set_response_code(net::HTTP_OK);
   fetcher->SetResponseString(GetValidTokenResponse("token2", 3600));
   fetcher->delegate()->OnURLFetchComplete(fetcher);
   EXPECT_EQ(3, consumer_.number_of_correct_tokens_);
   EXPECT_EQ(0, consumer_.number_of_errors_);
   EXPECT_EQ("token2", consumer_.last_token_);
 }
 
 TEST_F(OAuth2TokenServiceTest, SuccessAndExpirationAndFailure) {
-  service_->IssueAuthTokenForTest(GaiaConstants::kGaiaOAuth2LoginRefreshToken,
-                                  "refreshToken");
+  oauth2_service_->set_refresh_token("refreshToken");
 
   // First request.
   scoped_ptr<OAuth2TokenService::Request> request(oauth2_service_->StartRequest(
       std::set<std::string>(), &consumer_));
   message_loop_.RunUntilIdle();
   EXPECT_EQ(0, consumer_.number_of_correct_tokens_);
   EXPECT_EQ(0, consumer_.number_of_errors_);
   net::TestURLFetcher* fetcher = factory_.GetFetcherByID(0);
   EXPECT_TRUE(fetcher);
   fetcher->set_response_code(net::HTTP_OK);
@@ skipping 14 matching lines @@
   fetcher = factory_.GetFetcherByID(0);
   EXPECT_TRUE(fetcher);
   fetcher->set_response_code(net::HTTP_UNAUTHORIZED);
   fetcher->SetResponseString("");
   fetcher->delegate()->OnURLFetchComplete(fetcher);
   EXPECT_EQ(1, consumer_.number_of_correct_tokens_);
   EXPECT_EQ(1, consumer_.number_of_errors_);
 }
 
 TEST_F(OAuth2TokenServiceTest, SuccessAndExpirationAndSuccess) {
-  service_->IssueAuthTokenForTest(GaiaConstants::kGaiaOAuth2LoginRefreshToken,
-                                  "refreshToken");
+  oauth2_service_->set_refresh_token("refreshToken");
 
   // First request.
   scoped_ptr<OAuth2TokenService::Request> request(oauth2_service_->StartRequest(
       std::set<std::string>(), &consumer_));
   message_loop_.RunUntilIdle();
   EXPECT_EQ(0, consumer_.number_of_correct_tokens_);
   EXPECT_EQ(0, consumer_.number_of_errors_);
   net::TestURLFetcher* fetcher = factory_.GetFetcherByID(0);
   EXPECT_TRUE(fetcher);
   fetcher->set_response_code(net::HTTP_OK);
@@ skipping 14 matching lines @@
   EXPECT_TRUE(fetcher);
   fetcher->set_response_code(net::HTTP_OK);
   fetcher->SetResponseString(GetValidTokenResponse("another token", 0));
   fetcher->delegate()->OnURLFetchComplete(fetcher);
   EXPECT_EQ(2, consumer_.number_of_correct_tokens_);
   EXPECT_EQ(0, consumer_.number_of_errors_);
   EXPECT_EQ("another token", consumer_.last_token_);
 }
 
 TEST_F(OAuth2TokenServiceTest, RequestDeletedBeforeCompletion) {
-  service_->IssueAuthTokenForTest(GaiaConstants::kGaiaOAuth2LoginRefreshToken,
-                                  "refreshToken");
+  oauth2_service_->set_refresh_token("refreshToken");
 
   scoped_ptr<OAuth2TokenService::Request> request(oauth2_service_->StartRequest(
       std::set<std::string>(), &consumer_));
   message_loop_.RunUntilIdle();
   EXPECT_EQ(0, consumer_.number_of_correct_tokens_);
   EXPECT_EQ(0, consumer_.number_of_errors_);
   net::TestURLFetcher* fetcher = factory_.GetFetcherByID(0);
   EXPECT_TRUE(fetcher);
 
   request.reset();
 
   fetcher->set_response_code(net::HTTP_OK);
   fetcher->SetResponseString(GetValidTokenResponse("token", 3600));
   fetcher->delegate()->OnURLFetchComplete(fetcher);
   EXPECT_EQ(0, consumer_.number_of_correct_tokens_);
   EXPECT_EQ(0, consumer_.number_of_errors_);
 }
 
 TEST_F(OAuth2TokenServiceTest, RequestDeletedAfterCompletion) {
-  service_->IssueAuthTokenForTest(GaiaConstants::kGaiaOAuth2LoginRefreshToken,
-                                  "refreshToken");
+  oauth2_service_->set_refresh_token("refreshToken");
 
   scoped_ptr<OAuth2TokenService::Request> request(oauth2_service_->StartRequest(
       std::set<std::string>(), &consumer_));
   message_loop_.RunUntilIdle();
   net::TestURLFetcher* fetcher = factory_.GetFetcherByID(0);
   fetcher->set_response_code(net::HTTP_OK);
   fetcher->SetResponseString(GetValidTokenResponse("token", 3600));
   fetcher->delegate()->OnURLFetchComplete(fetcher);
   EXPECT_EQ(1, consumer_.number_of_correct_tokens_);
   EXPECT_EQ(0, consumer_.number_of_errors_);
   EXPECT_EQ("token", consumer_.last_token_);
 
   request.reset();
 
   EXPECT_EQ(1, consumer_.number_of_correct_tokens_);
   EXPECT_EQ(0, consumer_.number_of_errors_);
   EXPECT_EQ("token", consumer_.last_token_);
 }
 
 TEST_F(OAuth2TokenServiceTest, MultipleRequestsForTheSameScopesWithOneDeleted) {
-  service_->IssueAuthTokenForTest(GaiaConstants::kGaiaOAuth2LoginRefreshToken,
-                                  "refreshToken");
+  oauth2_service_->set_refresh_token("refreshToken");
 
   scoped_ptr<OAuth2TokenService::Request> request(oauth2_service_->StartRequest(
       std::set<std::string>(), &consumer_));
   message_loop_.RunUntilIdle();
   scoped_ptr<OAuth2TokenService::Request> request2(
       oauth2_service_->StartRequest(std::set<std::string>(), &consumer_));
   message_loop_.RunUntilIdle();
 
   request.reset();
 
   net::TestURLFetcher* fetcher = factory_.GetFetcherByID(0);
   fetcher->set_response_code(net::HTTP_OK);
   fetcher->SetResponseString(GetValidTokenResponse("token", 3600));
   fetcher->delegate()->OnURLFetchComplete(fetcher);
   EXPECT_EQ(1, consumer_.number_of_correct_tokens_);
   EXPECT_EQ(0, consumer_.number_of_errors_);
 }
 
-TEST_F(OAuth2TokenServiceTest, SuccessAndSignOutAndRequest) {
-  service_->IssueAuthTokenForTest(GaiaConstants::kGaiaOAuth2LoginRefreshToken,
-                                  "refreshToken");
-
+TEST_F(OAuth2TokenServiceTest, ClearedRefreshTokenFailsSubsequentRequests) {
+  // We have a valid refresh token; the first request is successful.
+  oauth2_service_->set_refresh_token("refreshToken");
   scoped_ptr<OAuth2TokenService::Request> request(oauth2_service_->StartRequest(
       std::set<std::string>(), &consumer_));
   message_loop_.RunUntilIdle();
   net::TestURLFetcher* fetcher = factory_.GetFetcherByID(0);
   fetcher->set_response_code(net::HTTP_OK);
   fetcher->SetResponseString(GetValidTokenResponse("token", 3600));
   fetcher->delegate()->OnURLFetchComplete(fetcher);
   EXPECT_EQ(1, consumer_.number_of_correct_tokens_);
   EXPECT_EQ(0, consumer_.number_of_errors_);
   EXPECT_EQ("token", consumer_.last_token_);
 
-  // Signs out
-  service_->IssueAuthTokenForTest(GaiaConstants::kGaiaOAuth2LoginRefreshToken,
-                                  "");
-  service_->EraseTokensFromDB();
-
+  // The refresh token is no longer available; subsequent requests fail.
+  oauth2_service_->set_refresh_token("");
   request = oauth2_service_->StartRequest(std::set<std::string>(), &consumer_);
   message_loop_.RunUntilIdle();
   EXPECT_EQ(fetcher, factory_.GetFetcherByID(0));
   EXPECT_EQ(1, consumer_.number_of_correct_tokens_);
   EXPECT_EQ(1, consumer_.number_of_errors_);
 }
 
-TEST_F(OAuth2TokenServiceTest, SuccessAndSignOutAndSignInAndSuccess) {
-  service_->IssueAuthTokenForTest(GaiaConstants::kGaiaOAuth2LoginRefreshToken,
-                                  "refreshToken");
+TEST_F(OAuth2TokenServiceTest,
+       ChangedRefreshTokenDoesNotAffectInFlightRequests) {
+  oauth2_service_->set_refresh_token("first refreshToken");
   std::set<std::string> scopes;
   scopes.insert("s1");
   scopes.insert("s2");
-
-  scoped_ptr<OAuth2TokenService::Request> request(oauth2_service_->StartRequest(
-      scopes, &consumer_));
-  message_loop_.RunUntilIdle();
-  net::TestURLFetcher* fetcher = factory_.GetFetcherByID(0);
-  fetcher->set_response_code(net::HTTP_OK);
-  fetcher->SetResponseString(GetValidTokenResponse("token", 3600));
-  fetcher->delegate()->OnURLFetchComplete(fetcher);
-  EXPECT_EQ(1, consumer_.number_of_correct_tokens_);
-  EXPECT_EQ(0, consumer_.number_of_errors_);
-  EXPECT_EQ("token", consumer_.last_token_);
-
-  // Signs out and signs in
-  service_->IssueAuthTokenForTest(GaiaConstants::kGaiaOAuth2LoginRefreshToken,
-                                  "");
-  service_->EraseTokensFromDB();
-  service_->IssueAuthTokenForTest(GaiaConstants::kGaiaOAuth2LoginRefreshToken,
-                                  "refreshToken");
-
-  request = oauth2_service_->StartRequest(scopes, &consumer_);
-  message_loop_.RunUntilIdle();
-  fetcher = factory_.GetFetcherByID(0);
-  fetcher->set_response_code(net::HTTP_OK);
-  fetcher->SetResponseString(GetValidTokenResponse("another token", 3600));
-  fetcher->delegate()->OnURLFetchComplete(fetcher);
-  EXPECT_EQ(2, consumer_.number_of_correct_tokens_);
-  EXPECT_EQ(0, consumer_.number_of_errors_);
-  EXPECT_EQ("another token", consumer_.last_token_);
-}
-
-TEST_F(OAuth2TokenServiceTest, PendingAndSignOutAndSignInAndSuccess) {
-  service_->IssueAuthTokenForTest(GaiaConstants::kGaiaOAuth2LoginRefreshToken,
-                                  "first refreshToken");
-  std::set<std::string> scopes;
-  scopes.insert("s1");
-  scopes.insert("s2");
 
   scoped_ptr<OAuth2TokenService::Request> request(oauth2_service_->StartRequest(
       scopes, &consumer_));
   message_loop_.RunUntilIdle();
   net::TestURLFetcher* fetcher1 = factory_.GetFetcherByID(0);
 
-  // Note |request| is still pending.
-  service_->EraseTokensFromDB();
-  service_->IssueAuthTokenForTest(GaiaConstants::kGaiaOAuth2LoginRefreshToken,
-                                  "second refreshToken");
+  // Note |request| is still pending when the refresh token changes.
+  oauth2_service_->set_refresh_token("second refreshToken");
 
+  // A 2nd request (using the new refresh token) that occurs and completes
+  // while the 1st request is in flight is successful.
   TestingOAuth2TokenServiceConsumer consumer2;
   scoped_ptr<OAuth2TokenService::Request> request2(
       oauth2_service_->StartRequest(scopes, &consumer2));
   message_loop_.RunUntilIdle();
 
   net::TestURLFetcher* fetcher2 = factory_.GetFetcherByID(0);
   fetcher2->set_response_code(net::HTTP_OK);
   fetcher2->SetResponseString(GetValidTokenResponse("second token", 3600));
   fetcher2->delegate()->OnURLFetchComplete(fetcher2);
   EXPECT_EQ(1, consumer2.number_of_correct_tokens_);
   EXPECT_EQ(0, consumer2.number_of_errors_);
   EXPECT_EQ("second token", consumer2.last_token_);
 
   fetcher1->set_response_code(net::HTTP_OK);
   fetcher1->SetResponseString(GetValidTokenResponse("first token", 3600));
   fetcher1->delegate()->OnURLFetchComplete(fetcher1);
   EXPECT_EQ(1, consumer_.number_of_correct_tokens_);
   EXPECT_EQ(0, consumer_.number_of_errors_);
   EXPECT_EQ("first token", consumer_.last_token_);
 }
 
 TEST_F(OAuth2TokenServiceTest, ServiceShutDownBeforeFetchComplete) {
-  service_->IssueAuthTokenForTest(GaiaConstants::kGaiaOAuth2LoginRefreshToken,
-                                  "refreshToken");
+  oauth2_service_->set_refresh_token("refreshToken");
   scoped_ptr<OAuth2TokenService::Request> request(oauth2_service_->StartRequest(
       std::set<std::string>(), &consumer_));
   message_loop_.RunUntilIdle();
   EXPECT_EQ(0, consumer_.number_of_correct_tokens_);
   EXPECT_EQ(0, consumer_.number_of_errors_);
 
-  profile_.reset();
+  // The destructor should cancel all in-flight fetchers.
+  oauth2_service_.reset(NULL);
 
   EXPECT_EQ(0, consumer_.number_of_correct_tokens_);
   EXPECT_EQ(1, consumer_.number_of_errors_);
 }
 
 TEST_F(OAuth2TokenServiceTest, RetryingConsumer) {
-  service_->IssueAuthTokenForTest(GaiaConstants::kGaiaOAuth2LoginRefreshToken,
-                                  "refreshToken");
-  RetryingTestingOAuth2TokenServiceConsumer consumer(oauth2_service_);
+  oauth2_service_->set_refresh_token("refreshToken");
+  RetryingTestingOAuth2TokenServiceConsumer consumer(oauth2_service_.get());
   scoped_ptr<OAuth2TokenService::Request> request(oauth2_service_->StartRequest(
       std::set<std::string>(), &consumer));
   message_loop_.RunUntilIdle();
   EXPECT_EQ(0, consumer.number_of_correct_tokens_);
   EXPECT_EQ(0, consumer.number_of_errors_);
 
   net::TestURLFetcher* fetcher = factory_.GetFetcherByID(0);
   EXPECT_TRUE(fetcher);
   fetcher->set_response_code(net::HTTP_UNAUTHORIZED);
   fetcher->SetResponseString("");
   fetcher->delegate()->OnURLFetchComplete(fetcher);
   EXPECT_EQ(0, consumer.number_of_correct_tokens_);
   EXPECT_EQ(1, consumer.number_of_errors_);
 
   fetcher = factory_.GetFetcherByID(0);
   EXPECT_TRUE(fetcher);
   fetcher->set_response_code(net::HTTP_UNAUTHORIZED);
   fetcher->SetResponseString("");
   fetcher->delegate()->OnURLFetchComplete(fetcher);
   EXPECT_EQ(0, consumer.number_of_correct_tokens_);
   EXPECT_EQ(2, consumer.number_of_errors_);
 }