Identity API: Add chrome.identity.onSignInChanged routing and IDL

This is the first part of adding the chrome.identity.onSignInChanged
event. This change creates the event in dev channel, and an event
router that can dispatch sign-in events to listening extensions.

A new permission, "identity.email" determines whether or not the app
may be given the email address of the account associated with the
user's profile. Apps without the permission still receive events, but
without the email address.

The code to actually generate the events will come in a future CL.

BUG=305830

Review URL: https://codereview.chromium.org/27283002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@229345 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 291 insertions, 0 deletions

diff --git a/chrome/browser/extensions/api/identity/identity_event_router_unittest.cc b/chrome/browser/extensions/api/identity/identity_event_router_unittest.cc
new file mode 100644
index 0000000..8b65c5c
--- /dev/null
+++ b/chrome/browser/extensions/api/identity/identity_event_router_unittest.cc
@@ -0,0 +1,291 @@
+// 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 "chrome/browser/extensions/api/identity/identity_event_router.h"
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include "base/command_line.h"
+#include "base/files/file_path.h"
+#include "base/path_service.h"
+#include "base/stl_util.h"
+#include "base/strings/stringprintf.h"
+#include "base/values.h"
+#include "chrome/browser/extensions/event_router.h"
+#include "chrome/browser/extensions/extension_service.h"
+#include "chrome/browser/extensions/extension_system.h"
+#include "chrome/browser/extensions/extension_system_factory.h"
+#include "chrome/browser/extensions/test_extension_service.h"
+#include "chrome/browser/extensions/test_extension_system.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/common/chrome_paths.h"
+#include "chrome/common/extensions/api/identity.h"
+#include "chrome/common/extensions/extension.h"
+#include "chrome/common/extensions/extension_builder.h"
+#include "chrome/common/extensions/extension_set.h"
+#include "chrome/common/extensions/permissions/permissions_data.h"
+#include "chrome/common/extensions/value_builder.h"
+#include "chrome/test/base/testing_profile.h"
+#include "content/public/test/mock_render_process_host.h"
+#include "content/public/test/test_browser_thread_bundle.h"
+#include "extensions/common/permissions/api_permission.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+struct EventInfo {
+  std::string user_id;
+  std::string email;
+  bool is_signed_in;
+};
+
+class FakeEventRouter : public extensions::EventRouter {
+ public:
+  explicit FakeEventRouter(Profile* profile) : EventRouter(profile, NULL) {}
+
+  virtual void DispatchEventToExtension(
+      const std::string& extension_id,
+      scoped_ptr<extensions::Event> event) OVERRIDE {
+    EventInfo event_info;
+    base::DictionaryValue* event_object = NULL;
+    EXPECT_TRUE(event->event_args->GetDictionary(0, &event_object));
+    EXPECT_TRUE(event_object->GetString("id", &event_info.user_id));
+    event_object->GetString("email", &event_info.email);
+
+    EXPECT_TRUE(event->event_args->GetBoolean(1, &event_info.is_signed_in));
+
+    EXPECT_FALSE(ContainsKey(extension_id_to_event_, extension_id));
+    extension_id_to_event_[extension_id] = event_info;
+  }
+
+  size_t GetEventCount() {
+    return extension_id_to_event_.size();
+  }
+
+  bool ContainsExtensionId(const std::string extension_id) {
+    return ContainsKey(extension_id_to_event_, extension_id);
+  }
+
+  const EventInfo& GetEventInfo(const std::string extension_id) {
+    return extension_id_to_event_[extension_id];
+  }
+
+ private:
+  std::map<std::string, EventInfo> extension_id_to_event_;
+
+  DISALLOW_COPY_AND_ASSIGN(FakeEventRouter);
+};
+
+class FakeExtensionService : public TestExtensionService {
+ public:
+  FakeExtensionService() {}
+  virtual ~FakeExtensionService() {}
+
+  virtual const ExtensionSet* extensions() const OVERRIDE {
+    return &extensions_;
+  }
+
+  virtual void AddExtension(const extensions::Extension* extension) OVERRIDE {
+    extensions_.Insert(extension);
+  }
+
+ private:
+  ExtensionSet extensions_;
+};
+
+class FakeExtensionSystem : public extensions::TestExtensionSystem {
+ public:
+  explicit FakeExtensionSystem(Profile* profile)
+      : extensions::TestExtensionSystem(profile) {}
+
+  virtual extensions::EventRouter* event_router() OVERRIDE {
+    return fake_event_router();
+  }
+
+  virtual ExtensionService* extension_service() OVERRIDE {
+    ExtensionServiceInterface* as_interface =
+        static_cast<ExtensionServiceInterface*>(&fake_extension_service_);
+    return static_cast<ExtensionService*>(as_interface);
+  }
+
+  FakeEventRouter* fake_event_router() {
+    if (!fake_event_router_)
+      fake_event_router_.reset(new FakeEventRouter(profile_));
+    return fake_event_router_.get();
+  }
+
+ private:
+  FakeExtensionService fake_extension_service_;
+  scoped_ptr<FakeEventRouter> fake_event_router_;
+
+  DISALLOW_COPY_AND_ASSIGN(FakeExtensionSystem);
+};
+
+BrowserContextKeyedService* BuildFakeExtensionSystem(
+    content::BrowserContext* profile) {
+  return new FakeExtensionSystem(static_cast<Profile*>(profile));
+}
+
+}  // namespace
+
+namespace extensions {
+
+class IdentityEventRouterTest : public testing::Test {
+ public:
+  IdentityEventRouterTest()
+      : test_profile_(new TestingProfile()),
+        identity_event_router_(test_profile_.get()),
+        extension_counter_(0) {}
+
+  virtual void SetUp() OVERRIDE {
+    fake_extension_system_ = static_cast<FakeExtensionSystem*>(
+        ExtensionSystemFactory::GetInstance()->SetTestingFactoryAndUse(
+            test_profile_.get(), &BuildFakeExtensionSystem));
+  }
+
+  FakeEventRouter* fake_event_router() {
+    return fake_extension_system_->fake_event_router();
+  }
+
+  Profile* profile() {
+    return test_profile_.get();
+  }
+
+ protected:
+  scoped_refptr<const Extension> CreateExtension(bool has_email_permission) {
+    ListBuilder permissions;
+    if (has_email_permission)
+      permissions.Append("identity.email");
+
+    std::string id = base::StringPrintf("id.%d", extension_counter_++);
+    scoped_refptr<const Extension> extension = ExtensionBuilder()
+        .SetID(id)
+        .SetManifest(DictionaryBuilder()
+                     .Set("name", "Extension with ID " + id)
+                     .Set("version", "1.0")
+                     .Set("manifest_version", 2)
+                     .Set("permissions", permissions))
+        .Build();
+    fake_extension_system_->extension_service()->AddExtension(extension.get());
+    fake_event_router()->AddEventListener(
+        api::identity::OnSignInChanged::kEventName, NULL, extension->id());
+    return extension;
+  }
+
+  scoped_ptr<TestingProfile> test_profile_;
+  IdentityEventRouter identity_event_router_;
+  FakeExtensionSystem* fake_extension_system_;
+  content::TestBrowserThreadBundle thread_bundle_;
+  int extension_counter_;
+};
+
+TEST_F(IdentityEventRouterTest, SignInNoListeners) {
+  identity_event_router_.DispatchSignInEvent(
+      "test_user_id", "test_email", true);
+  EXPECT_EQ(0ul, fake_event_router()->GetEventCount());
+}
+
+TEST_F(IdentityEventRouterTest, SignInNoEmailListener) {
+  scoped_refptr<const Extension> ext = CreateExtension(false);
+  identity_event_router_.DispatchSignInEvent(
+      "test_user_id", "test_email", true);
+  EXPECT_EQ(1ul, fake_event_router()->GetEventCount());
+  EXPECT_TRUE(fake_event_router()->ContainsExtensionId(ext->id()));
+  EXPECT_EQ("test_user_id",
+            fake_event_router()->GetEventInfo(ext->id()).user_id);
+  EXPECT_TRUE(fake_event_router()->GetEventInfo(ext->id()).email.empty());
+  EXPECT_TRUE(fake_event_router()->GetEventInfo(ext->id()).is_signed_in);
+}
+
+TEST_F(IdentityEventRouterTest, SignInWithEmailListener) {
+  scoped_refptr<const Extension> ext = CreateExtension(true);
+  identity_event_router_.DispatchSignInEvent(
+      "test_user_id", "test_email", true);
+  EXPECT_EQ(1ul, fake_event_router()->GetEventCount());
+  EXPECT_TRUE(fake_event_router()->ContainsExtensionId(ext->id()));
+  EXPECT_EQ("test_user_id",
+            fake_event_router()->GetEventInfo(ext->id()).user_id);
+  EXPECT_EQ("test_email", fake_event_router()->GetEventInfo(ext->id()).email);
+  EXPECT_TRUE(fake_event_router()->GetEventInfo(ext->id()).is_signed_in);
+}
+
+TEST_F(IdentityEventRouterTest, SignInMultipleListeners) {
+  typedef std::vector<scoped_refptr<const Extension> > ExtensionVector;
+  ExtensionVector with_email;
+  ExtensionVector no_email;
+
+  for (int i = 0; i < 3; i++)
+    with_email.push_back(CreateExtension(true));
+
+  for (int i = 0; i < 2; i++)
+    no_email.push_back(CreateExtension(false));
+
+  identity_event_router_.DispatchSignInEvent(
+      "test_user_id", "test_email", true);
+
+  EXPECT_EQ(with_email.size() + no_email.size(),
+            fake_event_router()->GetEventCount());
+
+  for (ExtensionVector::const_iterator it = with_email.begin();
+       it != with_email.end();
+       ++it) {
+    EXPECT_TRUE(fake_event_router()->ContainsExtensionId((*it)->id()));
+    EXPECT_EQ("test_user_id",
+              fake_event_router()->GetEventInfo((*it)->id()).user_id);
+    EXPECT_EQ("test_email",
+              fake_event_router()->GetEventInfo((*it)->id()).email);
+    EXPECT_TRUE(fake_event_router()->GetEventInfo((*it)->id()).is_signed_in);
+  }
+
+  for (ExtensionVector::const_iterator it = no_email.begin();
+       it != no_email.end();
+       ++it) {
+    EXPECT_TRUE(fake_event_router()->ContainsExtensionId((*it)->id()));
+    EXPECT_EQ("test_user_id",
+              fake_event_router()->GetEventInfo((*it)->id()).user_id);
+    EXPECT_TRUE(fake_event_router()->GetEventInfo((*it)->id()).email.empty());
+    EXPECT_TRUE(fake_event_router()->GetEventInfo((*it)->id()).is_signed_in);
+  }
+}
+
+TEST_F(IdentityEventRouterTest, SignInWithTwoListenersOnOneExtension) {
+  scoped_refptr<const Extension> ext = CreateExtension(true);
+
+  scoped_ptr<content::MockRenderProcessHost> fake_render_process(
+      new content::MockRenderProcessHost(profile()));
+  fake_event_router()->AddEventListener(
+      api::identity::OnSignInChanged::kEventName,
+      fake_render_process.get(),
+      ext->id());
+
+  identity_event_router_.DispatchSignInEvent(
+      "test_user_id", "test_email", true);
+  EXPECT_EQ(1ul, fake_event_router()->GetEventCount());
+  EXPECT_TRUE(fake_event_router()->ContainsExtensionId(ext->id()));
+  EXPECT_EQ("test_user_id",
+            fake_event_router()->GetEventInfo(ext->id()).user_id);
+  EXPECT_EQ("test_email", fake_event_router()->GetEventInfo(ext->id()).email);
+  EXPECT_TRUE(fake_event_router()->GetEventInfo(ext->id()).is_signed_in);
+
+  fake_event_router()->RemoveEventListener(
+      api::identity::OnSignInChanged::kEventName,
+      fake_render_process.get(),
+      ext->id());
+}
+
+TEST_F(IdentityEventRouterTest, SignOut) {
+  scoped_refptr<const Extension> ext = CreateExtension(false);
+  identity_event_router_.DispatchSignInEvent(
+      "test_user_id", "test_email", false);
+  EXPECT_EQ(1ul, fake_event_router()->GetEventCount());
+  EXPECT_TRUE(fake_event_router()->ContainsExtensionId(ext->id()));
+  EXPECT_EQ("test_user_id",
+            fake_event_router()->GetEventInfo(ext->id()).user_id);
+  EXPECT_TRUE(fake_event_router()->GetEventInfo(ext->id()).email.empty());
+  EXPECT_FALSE(fake_event_router()->GetEventInfo(ext->id()).is_signed_in);
+}
+
+}  // namespace extensions