public void ShouldRaiseLowFuel()
{
var fuelManagement = new FuelManagement();
var handler = Substitute.For <EventHandler <LowFuelWarningEventArgs> >();
fuelManagement.LowFuelDetected += handler;
fuelManagement.DoSomething();
handler.Received().Invoke(fuelManagement, Arg.Is <LowFuelWarningEventArgs>(x => x.PercentLeft < 20));
}
public void ShouldRaiseLowFuel_WithoutNSub()
{
var fuelManagement = new FuelManagement();
var eventWasRaised = false;
fuelManagement.LowFuelDetected += (o, e) => eventWasRaised = true;
fuelManagement.DoSomething();
Assert.True(eventWasRaised);
}