public void TestAppendText() { var filename = new StringBuilder(uncDirectory).Append(@"\").Append("file16.ext").ToString(); using (var writer = Pri.LongPath.File.CreateText(filename)) { writer.Write("start"); } Assert.IsTrue(Pri.LongPath.File.Exists(filename)); try { using (var writer = new FileInfo(filename).AppendText()) { writer.WriteLine("end"); } using (var reader = Pri.LongPath.File.OpenText(filename)) { var text = reader.ReadLine(); Assert.AreEqual("startend", text); } } finally { Pri.LongPath.File.Delete(filename); } }