Add SyncSocket::ReceiveWithTimeout() and SyncSocket unit tests.

base/sync_socket_unittest.cc

+// Copyright 2013 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/basictypes.h"
+#include "base/sync_socket.h"
+#include "base/threading/simple_thread.h"
+#include "base/time/time.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+const int kReceiveTimeoutInMilliseconds = 750;
+
+class HangingReceiveThread : public base::DelegateSimpleThread::Delegate {
+ public:
+  explicit HangingReceiveThread(base::SyncSocket* socket)
+      : socket_(socket),
+        thread_(this, "HangingReceiveThread") {
+    thread_.Start();
+  }
+
+  virtual ~HangingReceiveThread() {}
+
+  virtual void Run() OVERRIDE {
+    int data = 0;
+    ASSERT_EQ(socket_->Peek(), 0u);
+
+    // Use receive with timeout so we don't hang the test harness indefinitely.
+    ASSERT_EQ(0u, socket_->ReceiveWithTimeout(
+        &data, sizeof(data), base::TimeDelta::FromMilliseconds(
+            kReceiveTimeoutInMilliseconds)));
+  }
+
+  void Stop() {
+    thread_.Join();
+  }
+
+ private:
+  base::SyncSocket* socket_;
+  base::DelegateSimpleThread thread_;
+
+  DISALLOW_COPY_AND_ASSIGN(HangingReceiveThread);
+};
+
+// Tests sending data between two SyncSockets.  Uses ASSERT() and thus will exit
+// early upon failure.  Callers should use ASSERT_NO_FATAL_FAILURE() if testing
+// continues after return.
+void SendReceivePeek(base::SyncSocket* socket_a, base::SyncSocket* socket_b) {
+  int received = 0;
+  const int kSending = 123;
+  COMPILE_ASSERT(sizeof(kSending) == sizeof(received), Invalid_Data_Size);
+
+  ASSERT_EQ(0u, socket_a->Peek());
+  ASSERT_EQ(0u, socket_b->Peek());
+
+  // Verify |socket_a| can send to |socket_a| and |socket_a| can Receive from
+  // |socket_a|.
+  ASSERT_EQ(sizeof(kSending), socket_a->Send(&kSending, sizeof(kSending)));
+  ASSERT_EQ(sizeof(kSending), socket_b->Peek());
+  ASSERT_EQ(sizeof(kSending), socket_b->Receive(&received, sizeof(kSending)));
+  ASSERT_EQ(kSending, received);
+
+  ASSERT_EQ(0u, socket_a->Peek());
+  ASSERT_EQ(0u, socket_b->Peek());
+
+  // Now verify the reverse.
+  received = 0;
+  ASSERT_EQ(sizeof(kSending), socket_b->Send(&kSending, sizeof(kSending)));
+  ASSERT_EQ(sizeof(kSending), socket_a->Peek());
+  ASSERT_EQ(sizeof(kSending), socket_a->Receive(&received, sizeof(kSending)));
+  ASSERT_EQ(kSending, received);
+
+  ASSERT_EQ(0u, socket_a->Peek());
+  ASSERT_EQ(0u, socket_b->Peek());
+
+  ASSERT_TRUE(socket_a->Close());
+  ASSERT_TRUE(socket_b->Close());
+}
+
+template <class SocketType>
+void NormalSendReceivePeek() {
+  SocketType socket_a, socket_b;
+  ASSERT_TRUE(SocketType::CreatePair(&socket_a, &socket_b));
+  SendReceivePeek(&socket_a, &socket_b);
+}
+
+template <class SocketType>
+void ClonedSendReceivePeek() {
+  SocketType socket_a, socket_b;
+  ASSERT_TRUE(SocketType::CreatePair(&socket_a, &socket_b));
+
+  // Create new SyncSockets from the paired handles.
+  SocketType socket_c(socket_a.handle()), socket_d(socket_b.handle());
+  SendReceivePeek(&socket_c, &socket_d);
+}
+
+}  // namespace
+
+TEST(SyncSocket, NormalSendReceivePeek) {
+  NormalSendReceivePeek<base::SyncSocket>();
+}
+
+TEST(SyncSocket, ClonedSendReceivePeek) {
+  ClonedSendReceivePeek<base::SyncSocket>();
+}
+
+TEST(CancelableSyncSocket, NormalSendReceivePeek) {
+  NormalSendReceivePeek<base::CancelableSyncSocket>();
+}
+
+TEST(CancelableSyncSocket, ClonedSendReceivePeek) {
+  ClonedSendReceivePeek<base::CancelableSyncSocket>();
+}
+
+TEST(CancelableSyncSocket, CancelReceiveShutdown) {
+  base::CancelableSyncSocket socket_a, socket_b;
+  ASSERT_TRUE(base::CancelableSyncSocket::CreatePair(&socket_a, &socket_b));
+
+  base::TimeTicks start = base::TimeTicks::Now();
+  HangingReceiveThread thread(&socket_b);
+  ASSERT_TRUE(socket_b.Shutdown());
+  thread.Stop();
+
+  // Ensure the receive didn't just timeout.
+  ASSERT_LT((base::TimeTicks::Now() - start).InMilliseconds(),
+            kReceiveTimeoutInMilliseconds);
+
+  ASSERT_TRUE(socket_a.Close());
+  ASSERT_TRUE(socket_b.Close());
+}