Function TEST_F

cpp/src/arrow/util/io_util_test.cc:195–252

};

TEST_F(TestFileDescriptor, Basics) {
  int new_fd, new_fd2;

  // Default initialization
  FileDescriptor a;
  ASSERT_EQ(a.fd(), -1);
  ASSERT_TRUE(a.closed());
  ASSERT_OK(a.Close());
  ASSERT_OK(a.Close());

  // Assignment
  ASSERT_OK_AND_ASSIGN(new_fd, NewFileDescriptor());
  AssertValidFileDescriptor(new_fd);
  a = FileDescriptor(new_fd);
  ASSERT_FALSE(a.closed());
  ASSERT_GT(a.fd(), 2);
  ASSERT_OK(a.Close());
  AssertInvalidFileDescriptor(new_fd);  // underlying fd was actually closed
  ASSERT_TRUE(a.closed());
  ASSERT_EQ(a.fd(), -1);
  ASSERT_OK(a.Close());
  ASSERT_TRUE(a.closed());

  ASSERT_OK_AND_ASSIGN(new_fd, NewFileDescriptor());
  ASSERT_OK_AND_ASSIGN(new_fd2, NewFileDescriptor());

  // Move assignment
  FileDescriptor b(new_fd);
  FileDescriptor c(new_fd2);
  AssertValidFileDescriptor(new_fd);
  AssertValidFileDescriptor(new_fd2);
  c = std::move(b);
  ASSERT_TRUE(b.closed());
  ASSERT_EQ(b.fd(), -1);
  ASSERT_FALSE(c.closed());
  ASSERT_EQ(c.fd(), new_fd);
  AssertValidFileDescriptor(new_fd);
  AssertInvalidFileDescriptor(new_fd2);

  // Move constructor
  FileDescriptor d(std::move(c));
  ASSERT_TRUE(c.closed());
  ASSERT_EQ(c.fd(), -1);
  ASSERT_FALSE(d.closed());
  ASSERT_EQ(d.fd(), new_fd);
  AssertValidFileDescriptor(new_fd);

  // Detaching
  {
    FileDescriptor e(d.Detach());
    ASSERT_TRUE(d.closed());
    ASSERT_EQ(d.fd(), -1);
    ASSERT_FALSE(e.closed());
    ASSERT_EQ(e.fd(), new_fd);
    AssertValidFileDescriptor(new_fd);
  }
  AssertInvalidFileDescriptor(new_fd);  // e was closed
}