public async Task StopWithoutFlush_When_Logs_Are_AlreadySaved_SimplyDoesNothing(int logsCount)
{
// arrange
var logsPath = Path.Combine(Path.GetTempPath(), $"IntegrationTests-{Guid.NewGuid()}");
using (var cut = new AsyncLogger(new List <ILogWriter> {
new ToFileWriter(logsPath, "testLog")
},
new LoggerDateProvider()))
{
var logTasks = Enumerable.Range(1, logsCount)
.Select(i => Task.Run(() => { cut.Write($"LogMessage number {i}"); }));
await Task.WhenAll(logTasks);
await Task.Delay(2000); // Give some time so we are sure all logs will be written;
// act
cut.StopWithoutFlush();
}
await Task.Delay(100);
// assert
Assert.Equal(logsCount, File.ReadAllLines(Directory.GetFiles(logsPath)[0]).Length);
Directory.Delete(logsPath, true);
}
public async Task StopWithoutFlush_Rejects_NotSavedLogs(int logsCount)
{
// arrange
var logsPath = Path.Combine(Path.GetTempPath(), $"IntegrationTests-{Guid.NewGuid()}");
using (var cut = new AsyncLogger(new List <ILogWriter> {
new ToFileWriter(logsPath, "testLog")
},
new LoggerDateProvider()))
{
var logTasks = Enumerable.Range(1, logsCount)
.Select(i => Task.Run(() => { cut.Write($"LogMessage number {i}"); }));
await Task.WhenAll(logTasks);
// act
cut.StopWithoutFlush();
}
await Task.Delay(100);
// assert (Two things can happen - file did not make it to emerge yet or it did but without writing all logs.
if (File.Exists(Path.Combine(logsPath, $"testLog_{DateTime.Today:yyyyMMdd}.log")))
{
Assert.NotEqual(logsCount, File.ReadAllLines(Directory.GetFiles(logsPath)[0]).Length);
}
Directory.Delete(logsPath, true);
}
public void AsyncLogger_AfterDispose_CannotCall_StopWithoutFlush()
{
var logsPath = Path.Combine(Path.GetTempPath(), $"IntegrationTests-{Guid.NewGuid()}");
var cut = new AsyncLogger(new[] { new ToFileWriter(logsPath, "testLog") }, new LoggerDateProvider());
cut.Dispose();
Assert.Throws <ObjectDisposedException>(() => cut.StopWithoutFlush());
}
private static async Task RunAppAsync()
{
IAsyncLogger logger = new AsyncLogger(new ILogWriter[] { new ToFileWriter("C:\\Logs", "logs") }, new LoggerDateProvider());
for (int i = 0; i < 15; i++)
{
logger.Write("Number with Flush: " + i.ToString());
}
await logger.StopWithFlush();
IAsyncLogger logger2 = new AsyncLogger(new ILogWriter[] { new ToFileWriter("C:\\Logs", "logs") }, new LoggerDateProvider());
for (int i = 50; i > 0; i--)
{
logger2.Write("Number with No flush: " + i.ToString());
}
logger2.StopWithoutFlush();
Console.ReadKey();
}
