Reland: Support multiple sign-in for extension updates.

chrome/browser/extensions/updater/extension_updater_unittest.cc

Index: chrome/browser/extensions/updater/extension_updater_unittest.cc
diff --git a/chrome/browser/extensions/updater/extension_updater_unittest.cc b/chrome/browser/extensions/updater/extension_updater_unittest.cc
index 6c3721ce1b920024fd926a0cac81550f9c2fe15d..119c53c65dfacfd3d5086714c6f9fb3bdd2bec6f 100644
--- a/chrome/browser/extensions/updater/extension_updater_unittest.cc
+++ b/chrome/browser/extensions/updater/extension_updater_unittest.cc
@@ -60,6 +60,7 @@
 #include "net/url_request/url_request_status.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "url/third_party/mozilla/url_parse.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/login/user_manager.h"
@@ -113,6 +114,8 @@ const net::BackoffEntry::Policy kNoBackoffPolicy = {
 
 const char kEmptyUpdateUrlData[] = "";
 
+const char kAuthUserQueryKey[] = "authuser";
+
 int kExpectedLoadFlags =
     net::LOAD_DO_NOT_SEND_COOKIES |
     net::LOAD_DO_NOT_SAVE_COOKIES |
@@ -248,6 +251,25 @@ class NotificationsObserver : public content::NotificationObserver {
   DISALLOW_COPY_AND_ASSIGN(NotificationsObserver);
 };
 
+// Extracts the integer value of the |authuser| query parameter. Returns 0 if
+// the parameter is not set.
+int GetAuthUserQueryValue(const GURL& url) {
+  std::string query_string = url.query();
+  url::Component query(0, query_string.length());
+  url::Component key, value;
+  while (
+      url::ExtractQueryKeyValue(query_string.c_str(), &query, &key, &value)) {
+    std::string key_string = query_string.substr(key.begin, key.len);
+    if (key_string == kAuthUserQueryKey) {
+      int user_index = 0;
+      base::StringToInt(query_string.substr(value.begin, value.len),
+                        &user_index);
+      return user_index;
+    }
+  }
+  return 0;
+}
+
 }  // namespace
 
 // Base class for further specialized test classes.
@@ -1082,7 +1104,10 @@ class ExtensionUpdaterTest : public testing::Test {
   // Update a single extension in an environment where the download request
   // initially responds with a 403 status. Expect the fetcher to automatically
   // retry with cookies enabled.
-  void TestSingleProtectedExtensionDownloading(bool use_https, bool fail) {
+  void TestSingleProtectedExtensionDownloading(bool use_https,
+                                               bool fail,
+                                               int max_authuser,
+                                               int valid_authuser) {
     net::TestURLFetcherFactory factory;
     net::TestURLFetcher* fetcher = NULL;
     scoped_ptr<ServiceForDownloadTests> service(
@@ -1135,16 +1160,46 @@ class ExtensionUpdaterTest : public testing::Test {
     }
 
     // Attempt to fetch again after the auth failure.
+    bool succeed = !fail;
     if (fail) {
-      // Fail and verify that the fetch queue is cleared.
-      fetcher->set_url(test_url);
-      fetcher->set_status(net::URLRequestStatus());
-      fetcher->set_response_code(403);
-      fetcher->delegate()->OnURLFetchComplete(fetcher);
-      RunUntilIdle();
-      EXPECT_EQ(0U, updater.downloader_->extensions_queue_.active_request());
-    } else {
-      // Succeed
+      // Do not simulate incremental authuser retries.
+      if (max_authuser == 0) {
+        // Fail and verify that the fetch queue is cleared.
+        fetcher->set_url(test_url);
+        fetcher->set_status(net::URLRequestStatus());
+        fetcher->set_response_code(401);
+        fetcher->delegate()->OnURLFetchComplete(fetcher);
+        RunUntilIdle();
+
+        EXPECT_EQ(0U, updater.downloader_->extensions_queue_.active_request());
+        return;
+      }
+
+      // Simulate incremental authuser retries.
+      for (int user_index = 0; user_index <= max_authuser; ++user_index) {
+        const ExtensionDownloader::ExtensionFetch& fetch =
+            *updater.downloader_->extensions_queue_.active_request();
+        EXPECT_EQ(user_index, GetAuthUserQueryValue(fetch.url));
+        if (user_index == valid_authuser) {
+          succeed = true;
+          break;
+        }
+        fetcher =
+            factory.GetFetcherByID(ExtensionDownloader::kExtensionFetcherId);
+        EXPECT_TRUE(fetcher != NULL && fetcher->delegate() != NULL);
+        fetcher->set_url(fetch.url);
+        fetcher->set_status(net::URLRequestStatus());
+        fetcher->set_response_code(403);
+        fetcher->delegate()->OnURLFetchComplete(fetcher);
+        RunUntilIdle();
+      }
+    }
+
+    // Succeed
+    if (succeed) {
+      fetcher =
+          factory.GetFetcherByID(ExtensionDownloader::kExtensionFetcherId);
+      EXPECT_TRUE(fetcher != NULL && fetcher->delegate() != NULL);
       base::FilePath extension_file_path(FILE_PATH_LITERAL("/whatever"));
       fetcher->set_url(test_url);
       fetcher->set_status(net::URLRequestStatus());
@@ -1585,16 +1640,31 @@ TEST_F(ExtensionUpdaterTest, TestSingleExtensionDownloadingFailurePending) {
   TestSingleExtensionDownloading(true, false, true);
 }
 
-TEST_F(ExtensionUpdaterTest, TestSingleProtectedExtensionDownloading) {
-  TestSingleProtectedExtensionDownloading(true, false);
+TEST_F(ExtensionUpdaterTest, SingleProtectedExtensionDownloading) {
+  TestSingleProtectedExtensionDownloading(true, false, 0, 0);
+}
+
+TEST_F(ExtensionUpdaterTest, SingleProtectedExtensionDownloadingFailure) {
+  TestSingleProtectedExtensionDownloading(true, true, 0, 0);
+}
+
+TEST_F(ExtensionUpdaterTest, SingleProtectedExtensionDownloadingNoHTTPS) {
+  TestSingleProtectedExtensionDownloading(false, false, 0, 0);
+}
+
+TEST_F(ExtensionUpdaterTest,
+       SingleProtectedExtensionDownloadingWithNonDefaultAuthUser1) {
+  TestSingleProtectedExtensionDownloading(true, true, 2, 1);
 }
 
-TEST_F(ExtensionUpdaterTest, TestSingleProtectedExtensionDownloadingFailure) {
-  TestSingleProtectedExtensionDownloading(true, true);
+TEST_F(ExtensionUpdaterTest,
+       SingleProtectedExtensionDownloadingWithNonDefaultAuthUser2) {
+  TestSingleProtectedExtensionDownloading(true, true, 2, 2);
 }
 
-TEST_F(ExtensionUpdaterTest, TestSingleProtectedExtensionDownloadingNoHTTPS) {
-  TestSingleProtectedExtensionDownloading(false, false);
+TEST_F(ExtensionUpdaterTest,
+       SingleProtectedExtensionDownloadingAuthUserExhaustionFailure) {
+  TestSingleProtectedExtensionDownloading(true, true, 2, 5);
 }
 
 TEST_F(ExtensionUpdaterTest, TestMultipleExtensionDownloadingUpdatesFail) {