System.IO.Tests.MemoryStreamTests.MemoryStream_WriteByte_BeyondCapacity C# (CSharp) Méthode

        public static void MemoryStream_WriteByte_BeyondCapacity()
        {
            using (MemoryStream memoryStream = new MemoryStream())
            {
                long origLength = memoryStream.Length;
                byte[] bytes = new byte[10];
                for (int i = 0; i < bytes.Length; i++)
                    bytes[i] = (byte)i;
                int spanPastEnd = 5;
                memoryStream.Seek(spanPastEnd, SeekOrigin.End);
                Assert.Equal(memoryStream.Length + spanPastEnd, memoryStream.Position);

                // Test WriteByte
                origLength = memoryStream.Length;
                memoryStream.Position = memoryStream.Length + spanPastEnd;
                memoryStream.WriteByte(0x42);
                long expected = origLength + spanPastEnd + 1;
                Assert.Equal(expected, memoryStream.Position);
                Assert.Equal(expected, memoryStream.Length);
            }
        }