public void DoesNotCreateObjectWhenNotEnabled()
{
bool wasCalled = false;
var listener = new DiagnosticListener("Tests");
listener.IfEnabled("Test")?.Write(ShouldNotBeCalled(out wasCalled));
Assert.False(wasCalled);
}
public void ShouldNotCreateObjectIfNotEnabled()
{
object shouldBeNull = null;
DiagnosticSource diagnosticSource = new DiagnosticListener(nameof(ShouldNotCreateObjectIfNotEnabled));
diagnosticSource.IfEnabled("Nope")?.Write("Fail", shouldBeNull = new { failed = true });
Assert.Null(shouldBeNull);
var a = new StringReader("");
var b = new StringWriter(new StringBuilder());
(a, b).Dispose();
}
public void WritesWhenEnabled()
{
string name = null;
Args args = null;
var listener = new DiagnosticListener("Tests");
var observer = new Observer((n, a) => (name, args) = (n, a as Args));
using (listener.Subscribe(observer))
{
listener.IfEnabled("Test")?.Write(new Args("Pass"));
}
Assert.Equal("Test", name);
Assert.Equal("Pass", args?.Value);
}
