Improve process launch handle sharing API.

content/browser/file_descriptor_info_impl_unittest.cc

-// Copyright (c) 2012 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 "content/browser/file_descriptor_info_impl.h"
-
-#include <fcntl.h>
-#include <unistd.h>
-#include <utility>
-
-#include "base/posix/eintr_wrapper.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace {
-
-// Get a safe file descriptor for test purposes.
-// TODO(morrita) Merge with things in file_descriptor_set_posix_unittest.cc
-int GetSafeFd() {
-  return open("/dev/null", O_RDONLY);
-}
-
-// Returns true if fd was already closed.  Closes fd if not closed.
-// TODO(morrita) Merge with things in file_descriptor_set_posix_unittest.cc
-bool VerifyClosed(int fd) {
-  const int duped = dup(fd);
-  if (duped != -1) {
-    EXPECT_NE(IGNORE_EINTR(close(duped)), -1);
-    EXPECT_NE(IGNORE_EINTR(close(fd)), -1);
-    return false;
-  }
-  return true;
-}
-
-}  // namespace
-
-namespace content {
-
-typedef testing::Test FileDescriptorInfoTest;
-
-TEST_F(FileDescriptorInfoTest, Transfer) {
-  int testingId = 42;
-  std::unique_ptr<FileDescriptorInfo> target(FileDescriptorInfoImpl::Create());
-  base::ScopedFD fd(GetSafeFd());
-
-  int raw_fd = fd.get();
-  target->Transfer(testingId, std::move(fd));
-  ASSERT_EQ(1U, target->GetMappingSize());
-  ASSERT_EQ(target->GetFDAt(0), raw_fd);
-  ASSERT_EQ(target->GetIDAt(0), testingId);
-
-  target.reset();
-
-  ASSERT_TRUE(VerifyClosed(raw_fd));
-}
-
-TEST_F(FileDescriptorInfoTest, Share) {
-  int testingId = 42;
-  std::unique_ptr<FileDescriptorInfo> target(FileDescriptorInfoImpl::Create());
-  base::ScopedFD fd(GetSafeFd());
-
-  int raw_fd = fd.get();
-  target->Share(testingId, fd.get());
-  ASSERT_EQ(1U, target->GetMappingSize());
-  ASSERT_EQ(target->GetFDAt(0), raw_fd);
-  ASSERT_EQ(target->GetIDAt(0), testingId);
-
-  target.reset();
-
-  ASSERT_TRUE(!VerifyClosed(fd.release()));
-}
-
-TEST_F(FileDescriptorInfoTest, GetMappingWithIDAdjustment) {
-  int testingId1 = 42;
-  int testingId2 = 43;
-  std::unique_ptr<FileDescriptorInfo> target(FileDescriptorInfoImpl::Create());
-
-  target->Transfer(testingId1, base::ScopedFD(GetSafeFd()));
-  target->Transfer(testingId2, base::ScopedFD(GetSafeFd()));
-
-  std::unique_ptr<base::FileHandleMappingVector> mapping =
-      target->GetMappingWithIDAdjustment(100);
-  ASSERT_EQ((*mapping)[0].second, 142);
-  ASSERT_EQ((*mapping)[1].second, 143);
-}
-
-}  // namespace content