// Copyright 2018 The gVisor Authors.
//
// 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 "test/util/posix_error.h"

#include <errno.h>

#include "gmock/gmock.h"
#include "gtest/gtest.h"

namespace gvisor {
namespace testing {

namespace {

TEST(PosixErrorTest, PosixError) {
  auto err = PosixError(EAGAIN);
  EXPECT_THAT(err, PosixErrorIs(EAGAIN, ""));
}

TEST(PosixErrorTest, PosixErrorOrPosixError) {
  auto err = PosixErrorOr<std::nullptr_t>(PosixError(EAGAIN));
  EXPECT_THAT(err, PosixErrorIs(EAGAIN, ""));
}

TEST(PosixErrorTest, PosixErrorOrNullptr) {
  auto err = PosixErrorOr<std::nullptr_t>(nullptr);
  EXPECT_TRUE(err.ok());
  EXPECT_NO_ERRNO(err);
}

}  // namespace

}  // namespace testing
}  // namespace gvisor
