Add hook for extension to check sync status.

chrome/browser/extensions/api/preferences_private/preferences_private_apitest.cc

Index: chrome/browser/extensions/api/preferences_private/preferences_private_apitest.cc
diff --git a/chrome/browser/extensions/api/preferences_private/preferences_private_apitest.cc b/chrome/browser/extensions/api/preferences_private/preferences_private_apitest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..28edadb153c13bf8e66f92190a85496c971114b1
--- /dev/null
+++ b/chrome/browser/extensions/api/preferences_private/preferences_private_apitest.cc
@@ -0,0 +1,124 @@
+// Copyright 2013 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 "base/basictypes.h"
+#include "base/bind.h"
+#include "base/bind_helpers.h"
+#include "base/message_loop/message_loop.h"
+#include "chrome/browser/extensions/extension_apitest.h"
+#include "chrome/browser/extensions/extension_test_message_listener.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/signin/profile_oauth2_token_service_factory.h"
+#include "chrome/browser/sync/profile_sync_service.h"
+#include "chrome/browser/sync/profile_sync_service_factory.h"
+#include "content/public/browser/browser_context.h"
+
+namespace {
+
+class FakeProfileSyncService : public ProfileSyncService {
+ public:
+  explicit FakeProfileSyncService(Profile* profile)
+      : ProfileSyncService(
+            NULL,
+            profile,
+            NULL,
+            ProfileOAuth2TokenServiceFactory::GetForProfile(profile),
+            ProfileSyncService::MANUAL_START),
+        sync_initialized_(true),
+        initialized_state_violation_(false) {}
+
+  virtual ~FakeProfileSyncService() {}
+
+  static BrowserContextKeyedService* BuildFakeProfileSyncService(
+      content::BrowserContext* context) {
+    return new FakeProfileSyncService(static_cast<Profile*>(context));
+  }
+
+  void set_sync_initialized(bool sync_initialized) {
+    sync_initialized_ = sync_initialized;
+  }
+
+  bool initialized_state_violation() { return initialized_state_violation_; }
+
+  // ProfileSyncService:
+  virtual bool sync_initialized() const OVERRIDE {
+    return sync_initialized_;
+  }
+
+  virtual void AddObserver(
+      ProfileSyncServiceBase::Observer* observer) OVERRIDE {
+    if (sync_initialized_)
+      initialized_state_violation_ = true;
+    // Set sync initialized state to true so the function will run after
+    // OnStateChanged is called.
+    sync_initialized_ = true;
+    base::MessageLoop::current()->PostTask(
+        FROM_HERE,
+        base::Bind(&ProfileSyncServiceBase::Observer::OnStateChanged,
+                   base::Unretained(observer)));
+  }
+
+  virtual syncer::ModelTypeSet GetEncryptedDataTypes() const OVERRIDE {
+    if (!sync_initialized_)
+      initialized_state_violation_ = true;
+    syncer::ModelTypeSet type_set;
+    type_set.Put(syncer::AUTOFILL);
+    return type_set;
+  }
+
+  virtual syncer::ModelTypeSet GetPreferredDataTypes() const OVERRIDE {
+    if (!sync_initialized_)
+      initialized_state_violation_ = true;
+    syncer::ModelTypeSet preferred_types =
+        syncer::UserSelectableTypes();
+    preferred_types.Remove(syncer::TYPED_URLS);
+    return preferred_types;
+  }
+
+ private:
+  bool sync_initialized_;
+  // Set to true if a function is called when sync_initialized is in an
+  // unexpected state.
+  mutable bool initialized_state_violation_;
+
+  DISALLOW_COPY_AND_ASSIGN(FakeProfileSyncService);
+};
+
+class PreferencesPrivateApiTest : public ExtensionApiTest {
+ public:
+  PreferencesPrivateApiTest() : service_(NULL) {}
+  virtual ~PreferencesPrivateApiTest() {}
+
+  virtual void SetUpOnMainThread() OVERRIDE {
+    ExtensionApiTest::SetUpOnMainThread();
+    service_ =  static_cast<FakeProfileSyncService*>(
+        ProfileSyncServiceFactory::GetInstance()->SetTestingFactoryAndUse(
+            profile(), &FakeProfileSyncService::BuildFakeProfileSyncService));
+    browser_sync::SyncPrefs sync_prefs(profile()->GetPrefs());
+    sync_prefs.SetKeepEverythingSynced(false);
+  }
+
+  FakeProfileSyncService* service() { return service_; }
+
+ private:
+  FakeProfileSyncService* service_;
+  DISALLOW_COPY_AND_ASSIGN(PreferencesPrivateApiTest);
+};
+
+IN_PROC_BROWSER_TEST_F(PreferencesPrivateApiTest,
+                       GetSyncCategoriesWithoutPassphraseSynchronous) {
+  ASSERT_TRUE(RunComponentExtensionTest("preferences_private")) << message_;
+  EXPECT_FALSE(service()->initialized_state_violation());
+}
+
+// Verifies that we wait for the sync service to be ready before checking
+// encryption status.
+IN_PROC_BROWSER_TEST_F(PreferencesPrivateApiTest,
+                       GetSyncCategoriesWithoutPassphraseAsynchronous) {
+  service()->set_sync_initialized(false);
+  ASSERT_TRUE(RunComponentExtensionTest("preferences_private")) << message_;
+  EXPECT_FALSE(service()->initialized_state_violation());
+}
+
+}  // namespace