For types that support Pass(), e.g. scoped_ptr and friends, use Passed in PostTaskAndReplyWithResul…

base/task_runner_util_unittest.cc

 // Copyright (c) 2012 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/task_runner_util.h"
 
 #include "base/bind.h"
 #include "base/message_loop.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace base {
 
 namespace {
 
 int ReturnFourtyTwo() {
   return 42;
 }
 
 void StoreValue(int* destination, int value) {
   *destination = value;
 }
 
+int g_foo_destruct_count = 0;
+
+struct Foo {
+  ~Foo() {
+    ++g_foo_destruct_count;
+  }
+};
+
+scoped_ptr<Foo> CreateFoo() {
+  return scoped_ptr<Foo>(new Foo);
+}
+
+void ExpectFoo(scoped_ptr<Foo> foo) {
+  EXPECT_TRUE(foo.get());
+  scoped_ptr<Foo> local_foo(foo.Pass());
+  EXPECT_TRUE(local_foo.get());
+  EXPECT_FALSE(foo.get());
+}
+
 }  // namespace
 
-TEST(TaskRunnerHelpersTest, PostAndReplyWithStatus) {
+TEST(TaskRunnerHelpersTest, PostTaskAndReplyWithResult) {
   MessageLoop message_loop;
   int result = 0;
 
   PostTaskAndReplyWithResult(
       message_loop.message_loop_proxy(),
       FROM_HERE,
       Bind(&ReturnFourtyTwo),
       Bind(&StoreValue, &result));
 
   message_loop.RunAllPending();
 
   EXPECT_EQ(42, result);
 }
 
+TEST(TaskRunnerHelpersTest, PostTaskAndReplyWithResultPassed) {
+  g_foo_destruct_count = 0;
+
+  MessageLoop message_loop;
+
+  PostTaskAndReplyWithResult(
+      message_loop.message_loop_proxy(),
+      FROM_HERE,
+      Bind(&CreateFoo),
+      Bind(&ExpectFoo));
+
+  message_loop.RunAllPending();
+
+  EXPECT_EQ(1, g_foo_destruct_count);
+}
+
 }  // namespace base