public void GivenAListOfTalks_WhenCreatingTheMorningSession_ThenCreateASessionFor180Minutes()
{
var listOfTalks = getListOfTalks();
var factory = new SessionFactory();
var morningSession = factory.CreateMorningSession(listOfTalks);
Assert.That(morningSession.Sum(x => x.Duration), Is.LessThanOrEqualTo(180));
}