public void ShouldWriteInitialTail()
{
const int LogFileLineCount = 9;
var filePath = logFile9;
using (var watcher = new Watcher())
{
string[] writtenLines;
using (var stringWriter = new StringWriter())
{
var writer = new LineTextWriter(stringWriter);
watcher.LineWriter = writer;
watcher.DirectoryPath = Path.GetDirectoryName(filePath);
watcher.Filter = Path.GetFileName(filePath);
watcher.LineCount = 4;
watcher.Start();
writer.Flush();
Thread.Sleep(200);
writtenLines = stringWriter.ToString().ToLines();
}
writtenLines.ForEach(i => Debug.WriteLine(i));
var expectedLines = CreateLineListWithFileMarker(
TestData.LoadLines(logFile9,
LogFileLineCount - watcher.LineCount,
watcher.LineCount));
CompareLines(expectedLines.ToArray(), writtenLines);
}
}
public void ShouldDetectNewWrite()
{
const int LogFileLineCount = 9;
string[] newLines = testData.CreateLogLines(1);
var tempDir = TestData.CreateTempDirectory();
var tempFileName = Path.Combine(tempDir, "log.log");
Debug.WriteLine(tempFileName);
using (var watcher = new Watcher())
{
using (var stringWriter = new StringWriter())
{
var writer = new LineTextWriter(stringWriter);
string[] writtenLines;
using (var logger = new LoggerEmulator(logFile9, tempFileName))
{
logger.WriteToEnd();
watcher.LineWriter = writer;
watcher.DirectoryPath = tempDir;
watcher.Filter = "*.log";
watcher.LineCount = 4;
watcher.Start();
Thread.Sleep(200);
logger.WriteLines(newLines);
}
Thread.Sleep(1000);
watcher.Stop();
writer.Flush();
writtenLines = stringWriter.ToString().ToLines();
var expectedLines = CreateLineListWithFileMarker(
TestData.LoadLines(logFile9,
LogFileLineCount - watcher.LineCount,
watcher.LineCount));
expectedLines.AddRange(newLines);
CompareLines(expectedLines.ToArray(), writtenLines);
}
}
}
public void ShouldDetectFileRollover()
{
const int FirstLogFileLineCount = 9;
const int SecondLogFileLineCount = 5;
// Write 9 lines in file1
// Start watcher, will output 4 last lines of file 1
// Rename file1 to file1old
// Write new 5 lines to a new file1
// Expected result:
// 1 header
// 4 lines from original file 1
// 1 header
// 4 lines from new file 1
var tempDir = TestData.CreateTempDirectory();
var logTempFilePath = Path.Combine(tempDir, "log.log");
var oldLogTempFilePath = Path.Combine(tempDir, "log.old");
Debug.WriteLine("main file: " +logTempFilePath);
Debug.WriteLine("old file: " + oldLogTempFilePath);
string[] writtenLines;
using (var watcher = new Watcher())
{
using (var stringWriter = new StringWriter())
{
var writer = new LineTextWriter(stringWriter);
File.Copy(logFile9, logTempFilePath);
watcher.LineWriter = writer;
watcher.DirectoryPath = tempDir;
watcher.Filter = "*.log";
watcher.LineCount = 4;
watcher.Start();
Thread.Sleep(200);
File.Move(logTempFilePath, oldLogTempFilePath);
EmulateLog(logFile5, logTempFilePath);
Thread.Sleep(1000);
watcher.Stop();
writer.Flush();
writtenLines = stringWriter.ToString().ToLines();
}
Debug.WriteLine("Written lines:");
DumpLines(writtenLines);
var firstLines = CreateLineListWithFileMarker(
TestData.LoadLines(logFile9,
FirstLogFileLineCount - watcher.LineCount,
watcher.LineCount));
//firstLines.Add(">>>>>> <<<<<<");
var secondLines = CreateLineListWithFileMarker(
TestData.LoadLines(logFile5,
SecondLogFileLineCount - watcher.LineCount,
watcher.LineCount));
var expectedLines = firstLines.Concat(secondLines).ToArray();
CompareLines(expectedLines, writtenLines);
}
}
