chrome: dbus: support asynchronous method replies

dbus/end_to_end_async_unittest.cc

 // Copyright (c) 2011 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 <algorithm>
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 186 matching lines @@
 
   // Call the method with timeout of 0ms.
   const int timeout_ms = 0;
   CallMethod(&method_call, timeout_ms);
   WaitForResponses(1);
 
   // Should fail because of timeout.
   ASSERT_EQ("", response_strings_[0]);
 }
 
+// Tests calling a method that sends its reply asynchronously.
+TEST_F(EndToEndAsyncTest, AsyncEcho) {
+  const char* kHello = "hello";
+
+  // Create the method call.
+  dbus::MethodCall method_call("org.chromium.TestInterface", "AsyncEcho");
+  dbus::MessageWriter writer(&method_call);
+  writer.AppendString(kHello);
+
+  // Call the method.
+  const int timeout_ms = dbus::ObjectProxy::TIMEOUT_USE_DEFAULT;
+  CallMethod(&method_call, timeout_ms);
+
+  // Check the response.
+  WaitForResponses(1);
+  EXPECT_EQ(kHello, response_strings_[0]);
+}
+
 TEST_F(EndToEndAsyncTest, NonexistentMethod) {
   dbus::MethodCall method_call("org.chromium.TestInterface", "Nonexistent");
 
   const int timeout_ms = dbus::ObjectProxy::TIMEOUT_USE_DEFAULT;
   CallMethod(&method_call, timeout_ms);
   WaitForResponses(1);
 
   // Should fail because the method is nonexistent.
   ASSERT_EQ("", response_strings_[0]);
 }
@@ skipping 44 matching lines @@
 TEST_F(EndToEndAsyncTest, TestSignalFromRoot) {
   const char kMessage[] = "hello, world";
   // Send the test signal from the root object path, to see if we can
   // handle signals sent from "/", like dbus-send does.
   test_service_->SendTestSignalFromRoot(kMessage);
   // Receive the signal with the object proxy. The signal is handled in
   // EndToEndAsyncTest::OnTestSignal() in the main thread.
   WaitForTestSignal();
   ASSERT_EQ(kMessage, test_signal_string_);
 }