Cleanup Service<> and ServiceFactory<> when clients go away.

mojo/shell/service_connector_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 "base/message_loop/message_loop.h"
 #include "mojo/public/bindings/allocation_scope.h"
 #include "mojo/public/bindings/remote_ptr.h"
+#include "mojo/public/environment/environment.h"
 #include "mojo/public/shell/service.h"
+#include "mojo/public/utility/run_loop.h"
 #include "mojo/shell/service_connector.h"
 #include "mojom/shell.h"
 #include "mojom/test.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace mojo {
 namespace shell {
 namespace {
 
-struct Context {
+const char kTestURLString[] = "test:testService";
+
+struct TestContext {
+  TestContext() : num_impls(0) {}
   std::string last_test_string;
+  int num_impls;
 };
 
-class TestServiceImpl : public Service<TestService, TestServiceImpl, Context> {
+class TestServiceImpl :
+    public Service<TestService, TestServiceImpl, TestContext> {
  public:
+  TestServiceImpl() {}
+
+  virtual ~TestServiceImpl() {
+    --context()->num_impls;
+  }
+
   virtual void Test(const mojo::String& test_string) OVERRIDE {
     context()->last_test_string = test_string.To<std::string>();
     client()->AckTest();
   }
+
+  void Initialize(ServiceFactory<TestServiceImpl, TestContext>* service_factory,
+                  ScopedMessagePipeHandle client_handle) {
+    Service<TestService, TestServiceImpl, TestContext>::Initialize(
+        service_factory, client_handle.Pass());
+    ++context()->num_impls;
+  }
 };
 
 class TestClientImpl : public TestClient {
  public:
   explicit TestClientImpl(ScopedMessagePipeHandle service_handle)
       : service_(service_handle.Pass(), this),
         quit_after_ack_(false) {
   }
-  virtual ~TestClientImpl() {
-  }
+
+  virtual ~TestClientImpl() {}
+
   virtual void AckTest() OVERRIDE {
     if (quit_after_ack_)
-      base::MessageLoop::current()->QuitNow();
+      mojo::RunLoop::current()->Quit();
   }
+
   void Test(std::string test_string) {
     AllocationScope scope;
     quit_after_ack_ = true;
     service_->Test(mojo::String(test_string));
   }
+
+ private:
   RemotePtr<TestService> service_;
   bool quit_after_ack_;
+  DISALLOW_COPY_AND_ASSIGN(TestClientImpl);
 };
+}  // namespace
 
 class ServiceConnectorTest : public testing::Test,
                              public ServiceConnector::Loader {
  public:
-  ServiceConnectorTest() {
-  }
+  ServiceConnectorTest() {}
 
-  virtual ~ServiceConnectorTest() {
-  }
+  virtual ~ServiceConnectorTest() {}
 
   virtual void SetUp() OVERRIDE {
-    GURL test_url("test:testService");
+    GURL test_url(kTestURLString);
     service_connector_.reset(new ServiceConnector);
     service_connector_->SetLoaderForURL(this, test_url);
     MessagePipe pipe;
     test_client_.reset(new TestClientImpl(pipe.handle0.Pass()));
     service_connector_->Connect(test_url, pipe.handle1.Pass());
   }
 
   virtual void TearDown() OVERRIDE {
     test_client_.reset(NULL);
     test_app_.reset(NULL);
     service_connector_.reset(NULL);
   }
 
   virtual void Load(const GURL& url,
                     ScopedMessagePipeHandle shell_handle) OVERRIDE {
-    test_app_.reset(new ServiceFactory<TestServiceImpl, Context>(
+    test_app_.reset(new ServiceFactory<TestServiceImpl, TestContext>(
         shell_handle.Pass(), &context_));
   }
 
+  bool HasFactoryForTestURL() {
+    ServiceConnector::TestAPI connector_test_api(service_connector_.get());
+    return connector_test_api.HasFactoryForURL(GURL(kTestURLString));
+  }
+
  protected:
-  base::MessageLoop loop_;
-  Context context_;
-  scoped_ptr<ServiceFactory<TestServiceImpl, Context> > test_app_;
+  mojo::Environment env_;
+  mojo::RunLoop loop_;
+  TestContext context_;
+  scoped_ptr<ServiceFactory<TestServiceImpl, TestContext> > test_app_;
   scoped_ptr<TestClientImpl> test_client_;
   scoped_ptr<ServiceConnector> service_connector_;
   DISALLOW_COPY_AND_ASSIGN(ServiceConnectorTest);
 };
 
 TEST_F(ServiceConnectorTest, Basic) {
   test_client_->Test("test");
   loop_.Run();
   EXPECT_EQ(std::string("test"), context_.last_test_string);
 }
 
-}  // namespace
+TEST_F(ServiceConnectorTest, ClientError) {
+  test_client_->Test("test");
+  EXPECT_TRUE(HasFactoryForTestURL());
+  loop_.Run();
+  EXPECT_EQ(1, context_.num_impls);
+  test_client_.reset(NULL);
+  loop_.Run();
+  EXPECT_EQ(0, context_.num_impls);
+  EXPECT_FALSE(HasFactoryForTestURL());
+}
 }  // namespace shell
 }  // namespace mojo