public void FilterLevel()
{
IDefaultActivityLogger l = DefaultActivityLogger.Create();
// Binds the TestHelper.Logger logger to this one.
l.Output.RegisterMuxClient(TestHelper.Logger.Output.ExternalInput);
var log = new StringImpl();
l.Register(log);
using (l.Filter(LogLevelFilter.Error))
{
l.Trace("NO SHOW");
l.Info("NO SHOW");
l.Warn("NO SHOW");
l.Error("Error n°1");
using (l.Filter(LogLevelFilter.Warn))
{
l.Trace("NO SHOW");
l.Info("NO SHOW");
l.Warn("Warn n°1");
l.Error("Error n°2");
using (l.OpenGroup(LogLevel.Info, "GroupInfo"))
{
Assert.That(l.Filter, Is.EqualTo(LogLevelFilter.Warn), "Groups does not change the current filter level.");
l.Trace("NO SHOW");
l.Info("NO SHOW");
l.Warn("Warn n°2");
l.Error("Error n°3");
// Changing the level inside a Group.
l.Filter = LogLevelFilter.Fatal;
l.Error("NO SHOW");
l.Fatal("Fatal n°1");
}
Assert.That(l.Filter, Is.EqualTo(LogLevelFilter.Warn), "But Groups restores the original filter level when closed.");
l.Trace("NO SHOW");
l.Info("NO SHOW");
l.Warn("Warn n°3");
l.Error("Error n°4");
l.Fatal("Fatal n°2");
}
l.Trace("NO SHOW");
l.Info("NO SHOW");
l.Warn("NO SHOW");
l.Error("Error n°5");
}
Assert.That(log.Writer.ToString(), Is.Not.StringContaining("NO SHOW"));
Assert.That(log.Writer.ToString(), Is.StringContaining("Error n°1")
.And.StringContaining("Error n°2")
.And.StringContaining("Error n°3")
.And.StringContaining("Error n°4")
.And.StringContaining("Error n°5"));
Assert.That(log.Writer.ToString(), Is.StringContaining("Warn n°1")
.And.StringContaining("Warn n°2")
.And.StringContaining("Warn n°3"));
Assert.That(log.Writer.ToString(), Is.StringContaining("Fatal n°1")
.And.StringContaining("Fatal n°2"));
}