Adds a modified copy of talk/base to webrtc/base. It is the first step in migrating talk/base to webrtc/base.

BUG=N/A
R=andrew@webrtc.org, wu@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/12199004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6107 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/base/messagequeue_unittest.cc

@@ -0,0 +1,140 @@
+/*
+ *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "webrtc/base/messagequeue.h"
+
+#include "webrtc/base/bind.h"
+#include "webrtc/base/gunit.h"
+#include "webrtc/base/logging.h"
+#include "webrtc/base/thread.h"
+#include "webrtc/base/timeutils.h"
+#include "webrtc/base/nullsocketserver.h"
+
+using namespace rtc;
+
+class MessageQueueTest: public testing::Test, public MessageQueue {
+ public:
+  bool IsLocked_Worker() {
+    if (!crit_.TryEnter()) {
+      return true;
+    }
+    crit_.Leave();
+    return false;
+  }
+  bool IsLocked() {
+    // We have to do this on a worker thread, or else the TryEnter will
+    // succeed, since our critical sections are reentrant.
+    Thread worker;
+    worker.Start();
+    return worker.Invoke<bool>(
+        rtc::Bind(&MessageQueueTest::IsLocked_Worker, this));
+  }
+};
+
+struct DeletedLockChecker {
+  DeletedLockChecker(MessageQueueTest* test, bool* was_locked, bool* deleted)
+      : test(test), was_locked(was_locked), deleted(deleted) { }
+  ~DeletedLockChecker() {
+    *deleted = true;
+    *was_locked = test->IsLocked();
+  }
+  MessageQueueTest* test;
+  bool* was_locked;
+  bool* deleted;
+};
+
+static void DelayedPostsWithIdenticalTimesAreProcessedInFifoOrder(
+    MessageQueue* q) {
+  EXPECT_TRUE(q != NULL);
+  TimeStamp now = Time();
+  q->PostAt(now, NULL, 3);
+  q->PostAt(now - 2, NULL, 0);
+  q->PostAt(now - 1, NULL, 1);
+  q->PostAt(now, NULL, 4);
+  q->PostAt(now - 1, NULL, 2);
+
+  Message msg;
+  for (size_t i=0; i<5; ++i) {
+    memset(&msg, 0, sizeof(msg));
+    EXPECT_TRUE(q->Get(&msg, 0));
+    EXPECT_EQ(i, msg.message_id);
+  }
+
+  EXPECT_FALSE(q->Get(&msg, 0));  // No more messages
+}
+
+TEST_F(MessageQueueTest,
+       DelayedPostsWithIdenticalTimesAreProcessedInFifoOrder) {
+  MessageQueue q;
+  DelayedPostsWithIdenticalTimesAreProcessedInFifoOrder(&q);
+  NullSocketServer nullss;
+  MessageQueue q_nullss(&nullss);
+  DelayedPostsWithIdenticalTimesAreProcessedInFifoOrder(&q_nullss);
+}
+
+TEST_F(MessageQueueTest, DisposeNotLocked) {
+  bool was_locked = true;
+  bool deleted = false;
+  DeletedLockChecker* d = new DeletedLockChecker(this, &was_locked, &deleted);
+  Dispose(d);
+  Message msg;
+  EXPECT_FALSE(Get(&msg, 0));
+  EXPECT_TRUE(deleted);
+  EXPECT_FALSE(was_locked);
+}
+
+class DeletedMessageHandler : public MessageHandler {
+ public:
+  explicit DeletedMessageHandler(bool* deleted) : deleted_(deleted) { }
+  ~DeletedMessageHandler() {
+    *deleted_ = true;
+  }
+  void OnMessage(Message* msg) { }
+ private:
+  bool* deleted_;
+};
+
+TEST_F(MessageQueueTest, DiposeHandlerWithPostedMessagePending) {
+  bool deleted = false;
+  DeletedMessageHandler *handler = new DeletedMessageHandler(&deleted);
+  // First, post a dispose.
+  Dispose(handler);
+  // Now, post a message, which should *not* be returned by Get().
+  Post(handler, 1);
+  Message msg;
+  EXPECT_FALSE(Get(&msg, 0));
+  EXPECT_TRUE(deleted);
+}
+
+struct UnwrapMainThreadScope {
+  UnwrapMainThreadScope() : rewrap_(Thread::Current() != NULL) {
+    if (rewrap_) ThreadManager::Instance()->UnwrapCurrentThread();
+  }
+  ~UnwrapMainThreadScope() {
+    if (rewrap_) ThreadManager::Instance()->WrapCurrentThread();
+  }
+ private:
+  bool rewrap_;
+};
+
+TEST(MessageQueueManager, Clear) {
+  UnwrapMainThreadScope s;
+  if (MessageQueueManager::IsInitialized()) {
+    LOG(LS_INFO) << "Unable to run MessageQueueManager::Clear test, since the "
+                 << "MessageQueueManager was already initialized by some "
+                 << "other test in this run.";
+    return;
+  }
+  bool deleted = false;
+  DeletedMessageHandler* handler = new DeletedMessageHandler(&deleted);
+  delete handler;
+  EXPECT_TRUE(deleted);
+  EXPECT_FALSE(MessageQueueManager::IsInitialized());
+}