Created a stock implementation of the MessageLoopProxy interface than can be used to create an implementation that targets the current thread's message loop.

BUG=None
TEST=Unit tests provided.

Review URL: http://codereview.chromium.org/1837003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@46591 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 131 insertions, 0 deletions

diff --git a/base/message_loop_proxy_impl_unittest.cc b/base/message_loop_proxy_impl_unittest.cc
new file mode 100644
index 0000000..5fe341c
--- /dev/null
+++ b/base/message_loop_proxy_impl_unittest.cc
@@ -0,0 +1,131 @@
+// Copyright (c) 2010 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.h"
+#include "base/message_loop_proxy_impl.h"
+#include "base/thread.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "testing/platform_test.h"
+
+
+class MessageLoopProxyImplTest : public testing::Test {
+ public:
+  void Release() {
+    AssertOnIOThread();
+    Quit();
+  }
+
+  void Quit() {
+    loop_.PostTask(FROM_HERE, new MessageLoop::QuitTask);
+  }
+
+  void AssertOnIOThread() {
+    ASSERT_TRUE(io_thread_->message_loop_proxy()->BelongsToCurrentThread());
+  }
+
+  void AssertOnFileThread() {
+    ASSERT_TRUE(file_thread_->message_loop_proxy()->BelongsToCurrentThread());
+  }
+
+ protected:
+  virtual void SetUp() {
+    io_thread_.reset(new base::Thread("MessageLoopProxyImplTest_IO"));
+    file_thread_.reset(new base::Thread("MessageLoopProxyImplTest_File"));
+    io_thread_->Start();
+    file_thread_->Start();
+  }
+
+  virtual void TearDown() {
+    io_thread_->Stop();
+    file_thread_->Stop();
+  }
+
+  static void BasicFunction(MessageLoopProxyImplTest* test) {
+    test->AssertOnFileThread();
+    test->Quit();
+  }
+
+  class DummyTask : public Task {
+   public:
+    explicit DummyTask(bool* deleted) : deleted_(deleted) { }
+    ~DummyTask() {
+      *deleted_ = true;
+    }
+
+    void Run() {
+      FAIL();
+    }
+
+   private:
+    bool* deleted_;
+  };
+
+  class DeletedOnFile {
+   public:
+    explicit DeletedOnFile(MessageLoopProxyImplTest* test) : test_(test) {}
+
+    ~DeletedOnFile() {
+      test_->AssertOnFileThread();
+      test_->Quit();
+    }
+
+   private:
+    MessageLoopProxyImplTest* test_;
+  };
+
+  scoped_ptr<base::Thread> io_thread_;
+  scoped_ptr<base::Thread> file_thread_;
+
+ private:
+  MessageLoop loop_;
+};
+
+
+TEST_F(MessageLoopProxyImplTest, PostTask) {
+  EXPECT_TRUE(file_thread_->message_loop_proxy()->PostTask(
+      FROM_HERE, NewRunnableFunction(&BasicFunction, this)));
+  MessageLoop::current()->Run();
+}
+
+TEST_F(MessageLoopProxyImplTest, Release) {
+  EXPECT_TRUE(io_thread_->message_loop_proxy()->ReleaseSoon(FROM_HERE, this));
+  MessageLoop::current()->Run();
+}
+
+TEST_F(MessageLoopProxyImplTest, Delete) {
+  DeletedOnFile* deleted_on_file = new DeletedOnFile(this);
+  EXPECT_TRUE(file_thread_->message_loop_proxy()->DeleteSoon(
+      FROM_HERE, deleted_on_file));
+  MessageLoop::current()->Run();
+}
+
+TEST_F(MessageLoopProxyImplTest, PostTaskAfterThreadExits) {
+  scoped_ptr<base::Thread> test_thread(
+      new base::Thread("MessageLoopProxyImplTest_Dummy"));
+  test_thread->Start();
+  scoped_refptr<base::MessageLoopProxy> message_loop_proxy =
+      test_thread->message_loop_proxy();
+  test_thread->Stop();
+
+  bool deleted = false;
+  bool ret = message_loop_proxy->PostTask(
+      FROM_HERE, new DummyTask(&deleted));
+  EXPECT_FALSE(ret);
+  EXPECT_TRUE(deleted);
+}
+
+TEST_F(MessageLoopProxyImplTest, PostTaskAfterThreadIsDeleted) {
+  scoped_refptr<base::MessageLoopProxy> message_loop_proxy;
+  {
+    scoped_ptr<base::Thread> test_thread(
+        new base::Thread("MessageLoopProxyImplTest_Dummy"));
+    test_thread->Start();
+    message_loop_proxy = test_thread->message_loop_proxy();
+  }
+  bool deleted = false;
+  bool ret = message_loop_proxy->PostTask(FROM_HERE, new DummyTask(&deleted));
+  EXPECT_FALSE(ret);
+  EXPECT_TRUE(deleted);
+}
+