public async Task AsyncLogger_UsesSameLogFile_JustBeforeMidnight()
{
// arrange
var logsPath = Path.Combine(Path.GetTempPath(), $"IntegrationTests-{Guid.NewGuid()}");
using (var beforeMidnightCut = new AsyncLogger(new List <ILogWriter> {
new ToFileWriter(logsPath, "testLog")
},
new LoggerDateProvider()))
{
beforeMidnightCut.Write("BeforeMidnight");
await beforeMidnightCut.StopWithFlush();
}
var loggerDate = Mock.Of <ILoggerDateProvider>(m => m.Now == DateTime.Now.Date.AddSeconds(-1).AddDays(1).Date);
using (var afterMidnightCut =
new AsyncLogger(new List <ILogWriter> {
new ToFileWriter(logsPath, "testLog")
}, loggerDate))
{
// act
afterMidnightCut.Write("AfterMidnight");
await afterMidnightCut.StopWithFlush();
}
await Task.Delay(100);
// assert
Assert.Single(Directory.GetFiles(logsPath));
Directory.Delete(logsPath, true);
}
public async Task AsyncLogger_AfterDispose_CannotCall_StopWithFlush()
{
var logsPath = Path.Combine(Path.GetTempPath(), $"IntegrationTests-{Guid.NewGuid()}");
var cut = new AsyncLogger(new[] { new ToFileWriter(logsPath, "testLog") }, new LoggerDateProvider());
cut.Dispose();
await Assert.ThrowsAsync <ObjectDisposedException>(async() => await cut.StopWithFlush());
}
public async Task AsyncLogger_Silently_Swallows_Exception_AndConitnous_When_LogWriterThrowsException()
{
// arrange
var logWriterMock = new Mock <ILogWriter>();
logWriterMock.Setup(mock => mock.WriteLog(It.IsAny <LogLine>())).Throws(new Exception("I am a random Error! Say Hi :)"));
var cut = new AsyncLogger(new[] { logWriterMock.Object }, new LoggerDateProvider());
// act & assert
cut.Write("Nothing happens...");
await cut.StopWithFlush();
}
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();
}
public async Task StopWithFlush_Saves_PendingsLogs_AndStops(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
await cut.StopWithFlush();
}
var lines = File.ReadAllLines(Directory.GetFiles(logsPath)[0]).Length;
Assert.Equal(logsCount, lines);
Directory.Delete(logsPath, true);
}
