System.IO.Tests.FileStream_ctor_sfh_fa.FileAccessReadWrite C# (CSharp) Méthode

        public void FileAccessReadWrite()
        {
            string fileName = GetTestFilePath();

            using (FileStream fs = new FileStream(fileName, FileMode.Create))
            {
                fs.WriteByte(0);
            }

            using (FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.ReadWrite))
            {
                using (FileStream fsrw = CreateFileStream(fs.SafeFileHandle, FileAccess.ReadWrite))
                {
                    Assert.True(fsrw.CanRead);
                    Assert.Equal(0, fsrw.ReadByte());
                    Assert.True(fsrw.CanWrite);
                    fsrw.WriteByte(0); // should not throw
                    Assert.True(fsrw.CanSeek);
                }
            }
        }