public void TestOpenWriteWritesCorrectly() { var tempLongPathFilename = new StringBuilder(uncDirectory).Append(@"\").Append("file31a.ext").ToString(); var fi = new FileInfo(tempLongPathFilename); try { using (var fileStream = fi.OpenWrite()) { fileStream.WriteByte(42); } using (var fileStream = fi.OpenRead()) { Assert.AreEqual(42, fileStream.ReadByte()); } } finally { Pri.LongPath.File.Delete(tempLongPathFilename); } }