public void RaiseWithAnEventHandlerThatThrowsAnException()
{
OneThirstyDude dude = new OneThirstyDude();
Soda bru = new Soda();
bru.Pop += new PopHandler(dude.HandlePopWithException);
Assert.Throws <FormatException>(() => bru.OnPop("Iron Brew", new EventRaiser()), "Iron Brew");
}
public void RaiseWithBadNumberOfArguments()
{
OneThirstyDude dude = new OneThirstyDude();
Soda bru = new Soda();
bru.Pop += new PopHandler(dude.HandlePop);
Assert.Throws <TargetParameterCountException>(() => bru.OnPopWithBadNumberOfArguments("Iron Brew", new EventRaiser()));
}
public void RaiseWithNullEvent()
{
OneThirstyDude dude = new OneThirstyDude();
Soda bru = new Soda();
bru.Pop += new PopHandler(dude.HandlePop);
bru.OnPopWithNullEvent("Iron Brew", new EventRaiser());
Assert.AreEqual(string.Empty, dude.Soda);
}
public void Raise()
{
OneThirstyDude dude = new OneThirstyDude();
Soda bru = new Soda();
bru.Pop += new PopHandler(dude.HandlePop);
bru.OnPop("Iron Brew", new EventRaiser());
Assert.AreEqual("Iron Brew", dude.Soda);
}
public void RaiseSwallowsExceptionRaisedByHandlers()
{
OneThirstyDude dude = new OneThirstyDude();
Soda bru = new Soda();
bru.Pop += new PopHandler(dude.HandlePopWithException);
bru.OnPop("Iron Brew", new DefensiveEventRaiser());
Assert.AreEqual("Iron Brew", dude.Soda); // should have got through before exception was thrown
}
public void RaiseSwallowsExceptionRaisedByHandlerButCallsAllOtherHandlers()
{
bool firstCall = false;
bool secondCall = false;
bool thirdCall = false;
OneThirstyDude dude = new OneThirstyDude();
Soda bru = new Soda();
bru.Pop += (sender, soda) => firstCall = true;
bru.Pop += (sender, soda) => { secondCall = true; throw new Exception(); };
bru.Pop += (sender, soda) => { thirdCall = true; };
DefensiveEventRaiser eventRaiser = new DefensiveEventRaiser();
IEventExceptionsCollector exceptions = bru.OnPop("Iron Brew", eventRaiser);
Assert.AreEqual(1, exceptions.Exceptions.Count);
Assert.IsTrue(firstCall);
Assert.IsTrue(secondCall);
Assert.IsTrue(thirdCall);
}