public void AssembledTestletHasPretestForFirstTwoItems()
{
// first two items are always Pretest items
// SUT is testBuilder.AssembleSingleTestlet();
Testlet testlet = testBuilder.AssembleTestlet(testBank.GetTestletQuestionSetRandomly());
Assert.True(testlet.Questions.Take(2).All(q => q.IsPretest == true));
testlet = testBuilder.AssembleTestlet(testBank.GetTestletQuestionSetSequentially());
Assert.True(testlet.Questions.Take(2).All(q => q.IsPretest == true));
}