/// <summary>
/// Asserts that an object has raised a particular event at least once.
/// </summary>
/// <param name="eventName">
/// The name of the event that should have been raised.
/// </param>
/// <param name="because">
/// A formatted phrase explaining why the assertion should be satisfied. If the phrase does not
/// start with the word <i>because</i>, it is prepended to the message.
/// </param>
/// <param name="becauseArgs">
/// Zero or more values to use for filling in any <see cref="string.Format(string,object[])"/> compatible placeholders.
/// </param>
/// <remarks>
/// You must call <see cref="AssertionExtensions.Monitor"/> on the same object prior to this call so that Fluent Assertions can
/// subscribe for the events of the object.
/// </remarks>
public IEventRecorder Raise(string eventName, string because = "", params object[] becauseArgs)
{
IEventRecorder eventRecorder = monitor.GetEventRecorder(eventName);
if (!eventRecorder.Any())
{
Execute.Assertion
.BecauseOf(because, becauseArgs)
.FailWith("Expected object {0} to raise event {1}{reason}, but it did not.", monitor.Subject, eventName);
}
return(eventRecorder);
}