// Copyright 2018 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include <stdio.h>
#include <sys/un.h>
#include "gtest/gtest.h"
#include "gtest/gtest.h"
#include "test/syscalls/linux/socket_test_util.h"
#include "test/syscalls/linux/unix_domain_socket_test_util.h"
#include "test/util/test_util.h"

namespace gvisor {
namespace testing {

namespace {

// Test fixture for tests that apply to pairs of connected stream unix sockets.
using StreamUnixSocketPairTest = SocketPairTest;

TEST_P(StreamUnixSocketPairTest, WriteOneSideClosed) {
  auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
  ASSERT_THAT(close(sockets->release_first_fd()), SyscallSucceeds());
  constexpr char kStr[] = "abc";
  ASSERT_THAT(write(sockets->second_fd(), kStr, 3),
              SyscallFailsWithErrno(EPIPE));
}

TEST_P(StreamUnixSocketPairTest, ReadOneSideClosed) {
  auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair());
  ASSERT_THAT(close(sockets->release_first_fd()), SyscallSucceeds());
  char data[10] = {};
  ASSERT_THAT(read(sockets->second_fd(), data, sizeof(data)),
              SyscallSucceedsWithValue(0));
}

INSTANTIATE_TEST_CASE_P(
    AllUnixDomainSockets, StreamUnixSocketPairTest,
    ::testing::ValuesIn(IncludeReversals(VecCat<SocketPairKind>(
        ApplyVec<SocketPairKind>(
            UnixDomainSocketPair,
            AllBitwiseCombinations(List<int>{SOCK_STREAM},
                                   List<int>{0, SOCK_NONBLOCK},
                                   List<int>{0, SOCK_CLOEXEC})),
        ApplyVec<SocketPairKind>(
            FilesystemBoundUnixDomainSocketPair,
            AllBitwiseCombinations(List<int>{SOCK_STREAM},
                                   List<int>{0, SOCK_NONBLOCK},
                                   List<int>{0, SOCK_CLOEXEC})),
        ApplyVec<SocketPairKind>(
            AbstractBoundUnixDomainSocketPair,
            AllBitwiseCombinations(List<int>{SOCK_STREAM},
                                   List<int>{0, SOCK_NONBLOCK},
                                   List<int>{0, SOCK_CLOEXEC}))))));

}  // namespace

}  // namespace testing
}  // namespace gvisor