public void StringWriterToSpoolWriter() { TextWriter writer1 = new StringWriter(); TextWriter writer2 = new SpoolWriter(); for (int index = 0; index != 5000; ++index) { writer1.Write(index); } writer2.Write("before"); writer1.WriteTo(writer2); writer2.Write("after"); Assert.AreEqual("before" + _FiveThousandNumbers + "after", writer2.ToString()); }