public void InitializesTallyForNewFile()
{
using (RollingFlatFileTraceListener.TallyKeepingFileStreamWriter writer
= new RollingFlatFileTraceListener.TallyKeepingFileStreamWriter(File.Open(fileName, FileMode.Append, FileAccess.Write, FileShare.Read)))
{
Assert.AreEqual(0L, writer.Tally);
}
}
public void WritingToFileUpdatesTally()
{
using (RollingFlatFileTraceListener.TallyKeepingFileStreamWriter writer
= new RollingFlatFileTraceListener.TallyKeepingFileStreamWriter(File.Open(fileName, FileMode.Append, FileAccess.Write, FileShare.Read)))
{
writer.Write("12345");
writer.Flush();
Assert.AreEqual(5L, writer.Tally);
}
}
public void WritingToFileWithEncodingUpdatesTally()
{
using (RollingFlatFileTraceListener.TallyKeepingFileStreamWriter writer
= new RollingFlatFileTraceListener.TallyKeepingFileStreamWriter(File.Open(fileName, FileMode.Append, FileAccess.Write, FileShare.Read),
Encoding.UTF32))
{
writer.Write("12345");
writer.Flush();
Assert.AreEqual(20L, writer.Tally); // BOM is not part of tally - minimal fidelity loss on new files.
}
}
public void InitializesTallyForExistingFile()
{
File.WriteAllText(fileName, "12345");
using (RollingFlatFileTraceListener.TallyKeepingFileStreamWriter writer
= new RollingFlatFileTraceListener.TallyKeepingFileStreamWriter(File.Open(fileName, FileMode.Append, FileAccess.Write, FileShare.Read)))
{
Assert.AreEqual(5L, writer.Tally);
}
File.WriteAllText(fileName, "12345");
using (RollingFlatFileTraceListener.TallyKeepingFileStreamWriter writer
= new RollingFlatFileTraceListener.TallyKeepingFileStreamWriter(File.Open(fileName, FileMode.Create, FileAccess.Write, FileShare.Read)))
{
Assert.AreEqual(0L, writer.Tally);
}
File.WriteAllText(fileName, "12345");
using (RollingFlatFileTraceListener.TallyKeepingFileStreamWriter writer
= new RollingFlatFileTraceListener.TallyKeepingFileStreamWriter(File.Open(fileName, FileMode.Truncate, FileAccess.Write, FileShare.Read)))
{
Assert.AreEqual(0L, writer.Tally);
}
}