public void AppendText()
{
string tempFile = Path.GetTempFileName();
string expected = "This is a test.";
ExtendedFileInfo efi = new ExtendedFileInfo(tempFile);
Assert.IsNotNull(efi);
using (StreamWriter writer = efi.AppendText())
{
Assert.IsNotNull(writer);
writer.Write(expected);
}
string actual = File.ReadAllText(tempFile);
Assert.AreEqual(expected, actual);
}