public void Invalid_argument_tests()
{
var lambdaItem = new LambdaItem(_lambdaIdentity, Mock.Of <IWorkflow>());
Assert.Throws <ArgumentNullException>(() => lambdaItem.WithInput(null));
Assert.Throws <ArgumentNullException>(() => lambdaItem.WithTimeout(null));
Assert.Throws <ArgumentNullException>(() => lambdaItem.OnCompletion(null));
Assert.Throws <ArgumentNullException>(() => lambdaItem.OnFailure(null));
Assert.Throws <ArgumentNullException>(() => lambdaItem.OnTimedout(null));
Assert.Throws <ArgumentNullException>(() => lambdaItem.OnSchedulingFailed(null));
Assert.Throws <ArgumentNullException>(() => lambdaItem.OnStartFailed(null));
Assert.Throws <ArgumentException>(() => lambdaItem.AfterActivity(null, "1.0"));
Assert.Throws <ArgumentException>(() => lambdaItem.AfterActivity("name", null));
Assert.Throws <ArgumentException>(() => lambdaItem.AfterTimer(null));
Assert.Throws <ArgumentException>(() => lambdaItem.AfterLambda(null));
Assert.Throws <ArgumentException>(() => lambdaItem.AfterChildWorkflow(null, "ver"));
Assert.Throws <ArgumentException>(() => lambdaItem.AfterChildWorkflow("name", null));
Assert.Throws <ArgumentNullException>(() => lambdaItem.When(null));
Assert.Throws <ArgumentNullException>(() => lambdaItem.When(null, _ => WorkflowAction.Empty));
Assert.Throws <ArgumentNullException>(() => lambdaItem.When(_ => true, null));
}