/// <summary>
/// Asserts that at least one occurrence of the event had arguments matching all predicates.
/// </summary>
public static IEventRecorder WithArgs <T>(this IEventRecorder eventRecorder, params Expression <Func <T, bool> >[] predicates)
{
Func <T, bool>[] compiledPredicates = predicates.Select(p => p?.Compile()).ToArray();
if (!eventRecorder.First().Parameters.OfType <T>().Any())
{
throw new ArgumentException("No argument of event " + eventRecorder.EventName + " is of type <" + typeof(T) + ">.");
}
bool expected = eventRecorder.Any(recordedEvent =>
{
T[] parameters = recordedEvent.Parameters.OfType <T>().ToArray();
int parametersToCheck = Math.Min(parameters.Length, predicates.Length);
bool isMatch = true;
for (int i = 0; i < parametersToCheck && isMatch; i++)
{
isMatch = compiledPredicates[i]?.Invoke(parameters[i]) ?? true;
}
return(isMatch);
});
if (!expected)
{
Execute.Assertion
.FailWith("Expected at least one event with arguments matching {0}, but found none.", string.Join(" | ", predicates.Where(p => p != null).Select(p => p.Body.ToString())));
}
return(eventRecorder);
}
/// <summary>
/// Asserts that at least one occurrence of the event had an <see cref="EventArgs"/> object matching a predicate.
/// </summary>
public static IEventRecorder WithArgs <T>(this IEventRecorder eventRecorder, Expression <Func <T, bool> > predicate) where T : EventArgs
{
Func <T, bool> compiledPredicate = predicate.Compile();
if (!eventRecorder.First().Parameters.OfType <T>().Any())
{
throw new ArgumentException("No argument of event " + eventRecorder.EventName + " is of type <" + typeof(T) + ">.");
}
if (!eventRecorder.Any(@event => compiledPredicate(@event.Parameters.OfType <T>().Single())))
{
Execute.Assertion
.FailWith("Expected at least one event with arguments matching {0}, but found none.", predicate.Body);
}
return(eventRecorder);
}
