Refactor net tests to use GMock matchers for checking net::Error results

net/socket/unix_domain_server_socket_posix_unittest.cc

 // Copyright 2014 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 "net/socket/unix_domain_server_socket_posix.h"
 
 #include <memory>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/run_loop.h"
 #include "base/stl_util.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
 #include "net/base/test_completion_callback.h"
 #include "net/socket/unix_domain_client_socket_posix.h"
+#include "net/test/gtest_util.h"
+#include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+using net::test::IsError;
+using net::test::IsOk;
+
 namespace net {
 namespace {
 
 const char kSocketFilename[] = "socket_for_testing";
 const char kInvalidSocketPath[] = "/invalid/path";
 
 bool UserCanConnectCallback(bool allow_user,
     const UnixDomainServerSocket::Credentials& credentials) {
   // Here peers are running in same process.
 #if defined(OS_LINUX) || defined(OS_ANDROID)
@@ skipping 25 matching lines @@
                                        kUseAbstractNamespace);
   EXPECT_EQ(ERR_FILE_NOT_FOUND,
             server_socket.BindAndListen(kInvalidSocketPath, /*backlog=*/1));
 }
 
 TEST_F(UnixDomainServerSocketTest, ListenWithInvalidPathWithAbstractNamespace) {
   const bool kUseAbstractNamespace = true;
   UnixDomainServerSocket server_socket(CreateAuthCallback(true),
                                        kUseAbstractNamespace);
 #if defined(OS_ANDROID) || defined(OS_LINUX)
-  EXPECT_EQ(OK, server_socket.BindAndListen(kInvalidSocketPath, /*backlog=*/1));
+  EXPECT_THAT(server_socket.BindAndListen(kInvalidSocketPath, /*backlog=*/1),
+              IsOk());
 #else
   EXPECT_EQ(ERR_ADDRESS_INVALID,
             server_socket.BindAndListen(kInvalidSocketPath, /*backlog=*/1));
 #endif
 }
 
 TEST_F(UnixDomainServerSocketTest, ListenAgainAfterFailureWithInvalidPath) {
   const bool kUseAbstractNamespace = false;
   UnixDomainServerSocket server_socket(CreateAuthCallback(true),
                                        kUseAbstractNamespace);
   EXPECT_EQ(ERR_FILE_NOT_FOUND,
             server_socket.BindAndListen(kInvalidSocketPath, /*backlog=*/1));
-  EXPECT_EQ(OK, server_socket.BindAndListen(socket_path_, /*backlog=*/1));
+  EXPECT_THAT(server_socket.BindAndListen(socket_path_, /*backlog=*/1), IsOk());
 }
 
 TEST_F(UnixDomainServerSocketTest, AcceptWithForbiddenUser) {
   const bool kUseAbstractNamespace = false;
 
   UnixDomainServerSocket server_socket(CreateAuthCallback(false),
                                        kUseAbstractNamespace);
-  EXPECT_EQ(OK, server_socket.BindAndListen(socket_path_, /*backlog=*/1));
+  EXPECT_THAT(server_socket.BindAndListen(socket_path_, /*backlog=*/1), IsOk());
 
   std::unique_ptr<StreamSocket> accepted_socket;
   TestCompletionCallback accept_callback;
   EXPECT_EQ(ERR_IO_PENDING,
             server_socket.Accept(&accepted_socket, accept_callback.callback()));
   EXPECT_FALSE(accepted_socket);
 
   UnixDomainClientSocket client_socket(socket_path_, kUseAbstractNamespace);
   EXPECT_FALSE(client_socket.IsConnected());
 
   // Connect() will return OK before the server rejects the connection.
   TestCompletionCallback connect_callback;
   int rv = connect_callback.GetResult(
       client_socket.Connect(connect_callback.callback()));
-  ASSERT_EQ(OK, rv);
+  ASSERT_THAT(rv, IsOk());
 
   // Try to read from the socket.
   const int read_buffer_size = 10;
   scoped_refptr<IOBuffer> read_buffer(new IOBuffer(read_buffer_size));
   TestCompletionCallback read_callback;
   rv = read_callback.GetResult(client_socket.Read(
       read_buffer.get(), read_buffer_size, read_callback.callback()));
 
   // The server should have disconnected gracefully, without sending any data.
   ASSERT_EQ(0, rv);
   EXPECT_FALSE(client_socket.IsConnected());
 
   // The server socket should not have called |accept_callback| or modified
   // |accepted_socket|.
   EXPECT_FALSE(accept_callback.have_result());
   EXPECT_FALSE(accepted_socket);
 }
 
 TEST_F(UnixDomainServerSocketTest, UnimplementedMethodsFail) {
   const bool kUseAbstractNamespace = false;
   UnixDomainServerSocket server_socket(CreateAuthCallback(true),
                                        kUseAbstractNamespace);
 
   IPEndPoint ep;
-  EXPECT_EQ(ERR_NOT_IMPLEMENTED, server_socket.Listen(ep, 0));
+  EXPECT_THAT(server_socket.Listen(ep, 0), IsError(ERR_NOT_IMPLEMENTED));
   EXPECT_EQ(ERR_NOT_IMPLEMENTED,
       server_socket.ListenWithAddressAndPort(kInvalidSocketPath,
                                              0,
                                              /*backlog=*/1));
 
-  EXPECT_EQ(ERR_ADDRESS_INVALID, server_socket.GetLocalAddress(&ep));
+  EXPECT_THAT(server_socket.GetLocalAddress(&ep), IsError(ERR_ADDRESS_INVALID));
 }
 
 // Normal cases including read/write are tested by UnixDomainClientSocketTest.
 
 }  // namespace
 }  // namespace net