public async Task <CommandResult> Handle(
Command request,
CancellationToken cancellationToken)
{
Document doc = await store.GetAsync <Document>(
request.PurchaseOrderLineId.ToString());
PurchaseOrderLine aggregate = new PurchaseOrderLine(doc);
ReviewOutcome reviewResult = aggregate.Review();
CommandResult result = CommandResult.Void;
if (reviewResult is CancellationSuggested)
{
result = result
.WithNotification(
new CancellationSuggestedEvent
{
PurchaseOrderLineId = request.PurchaseOrderLineId
});
}
return(result);
}
public T Review(T item, ReviewOutcome outcome)
{
_revisionList.Remove(item);
var nextReview = new T();
if (outcome != ReviewOutcome.Incorrect)
{
nextReview.CorrectReviewStreak = item.CorrectReviewStreak + 1;
nextReview.PreviousCorrectReview = item.ReviewDate;
}
else
{
nextReview.CorrectReviewStreak = 0;
nextReview.PreviousCorrectReview = DateTime.MinValue;
_revisionList.Add(nextReview);
}
nextReview.ReviewDate = Clock.Now();
nextReview.DifficultyRating = ReviewStrategy.AdjustDifficulty(item, outcome);
nextReview.ReviewOutcome = outcome;
return(nextReview);
}
public void reviewing_updates_ReviewOutcome(ReviewOutcome outcome)
{
var item = new ReviewItemBuilder().Due().Build();
var session = new StudySession<ReviewItem>(new[] { item }) { Clock = _clock };
var review = session.Review(item, outcome);
Assert.That(review.ReviewOutcome, Is.EqualTo(outcome));
}
public void correct_review_outcome_increments_CorrectReviewStreak(ReviewOutcome outcome)
{
var correctReviewStreak = 3;
var item = new ReviewItemBuilder().Due().WithCorrectReviewStreak(correctReviewStreak).Build();
var session = new StudySession<ReviewItem>(new[] { item });
var review = session.Review(item, outcome);
Assert.That(review.CorrectReviewStreak, Is.EqualTo(correctReviewStreak + 1));
}
public void correct_review_outcome_increments_CorrectReviewStreak(ReviewOutcome outcome)
{
var correctReviewStreak = 3;
var item = new ReviewItemBuilder().Due().WithCorrectReviewStreak(correctReviewStreak).Build();
var session = new StudySession <ReviewItem>(new[] { item });
var review = session.Review(item, outcome);
Assert.That(review.CorrectReviewStreak, Is.EqualTo(correctReviewStreak + 1));
}
public void correct_review_outcome_sets_PreviousCorrectReview(ReviewOutcome outcome)
{
var correctReviewStreak = 3;
var item = new ReviewItemBuilder().Due().WithCorrectReviewStreak(correctReviewStreak).Build();
var reviewDate = item.ReviewDate;
var session = new StudySession<ReviewItem>(new[] { item });
var review = session.Review(item, outcome);
Assert.That(review.PreviousCorrectReview, Is.EqualTo(reviewDate));
}
public void correct_review_outcome_sets_PreviousCorrectReview(ReviewOutcome outcome)
{
var correctReviewStreak = 3;
var item = new ReviewItemBuilder().Due().WithCorrectReviewStreak(correctReviewStreak).Build();
var reviewDate = item.ReviewDate;
var session = new StudySession <ReviewItem>(new[] { item });
var review = session.Review(item, outcome);
Assert.That(review.PreviousCorrectReview, Is.EqualTo(reviewDate));
}
public void reviewing_updates_DifficultyRating_based_on_review_strategy(ReviewOutcome outcome)
{
var item = new ReviewItemBuilder().Due().WithDifficultyRating(DifficultyRating.MostDifficult).Build();
var session = new StudySession <ReviewItem>(new[] { item })
{
ReviewStrategy = new SimpleReviewStrategy()
};
var review = session.Review(item, outcome);
Assert.That(review.DifficultyRating, Is.EqualTo(DifficultyRating.Easiest));
}
public void reviewing_updates_ReviewOutcome(ReviewOutcome outcome)
{
var item = new ReviewItemBuilder().Due().Build();
var session = new StudySession <ReviewItem>(new[] { item })
{
Clock = _clock
};
var review = session.Review(item, outcome);
Assert.That(review.ReviewOutcome, Is.EqualTo(outcome));
}
public void correct_items_are_removed_from_review_queue(ReviewOutcome outcome)
{
var items = new ReviewItemListBuilder()
.WithDueItems(1)
.Build();
var session = new StudySession <ReviewItem>(items);
var item = session.First();
session.Review(item, outcome);
Assert.That(session.Count(), Is.EqualTo(0));
}
public DifficultyRating AdjustDifficulty(IReviewItem item, ReviewOutcome outcome)
{
//EF':=EF+(0.1-(5-q)*(0.08+(5-q)*0.02))
//where:
//EF' - new value of the E-Factor,
//EF - old value of the E-Factor,
//q - quality of the response in the 0-3 grade scale.
//If EF is less than 1.3 then let EF be 1.3.
var currentEasinessFactor = DifficultyRatingToEasinessFactor(item.DifficultyRating.Percentage);
var newEasinessFactor = currentEasinessFactor + (0.1 - (3 - (int)outcome)*(0.08 + (3 - (int)outcome)*0.02));
var newDifficultyRating = EasinessFactorToDifficultyRating(newEasinessFactor);
if (newDifficultyRating > 100)
newDifficultyRating = 100;
if (newDifficultyRating < 0)
newDifficultyRating = 0;
return new DifficultyRating(newDifficultyRating);
}
public DifficultyRating AdjustDifficulty(IReviewItem item, ReviewOutcome outcome)
{
//EF':=EF+(0.1-(5-q)*(0.08+(5-q)*0.02))
//where:
//EF' - new value of the E-Factor,
//EF - old value of the E-Factor,
//q - quality of the response in the 0-3 grade scale.
//If EF is less than 1.3 then let EF be 1.3.
var currentEasinessFactor = DifficultyRatingToEasinessFactor(item.DifficultyRating.Percentage);
var newEasinessFactor = currentEasinessFactor + (0.1 - (3 - (int)outcome) * (0.08 + (3 - (int)outcome) * 0.02));
var newDifficultyRating = EasinessFactorToDifficultyRating(newEasinessFactor);
if (newDifficultyRating > 100)
{
newDifficultyRating = 100;
}
if (newDifficultyRating < 0)
{
newDifficultyRating = 0;
}
return(new DifficultyRating(newDifficultyRating));
}
public void reviewing_updates_DifficultyRating_based_on_review_strategy(ReviewOutcome outcome)
{
var item = new ReviewItemBuilder().Due().WithDifficultyRating(DifficultyRating.MostDifficult).Build();
var session = new StudySession<ReviewItem>(new[] { item }) { ReviewStrategy = new SimpleReviewStrategy() };
var review = session.Review(item, outcome);
Assert.That(review.DifficultyRating, Is.EqualTo(DifficultyRating.Easiest));
}
public void correct_items_are_removed_from_review_queue(ReviewOutcome outcome)
{
var items = new ReviewItemListBuilder()
.WithDueItems(1)
.Build();
var session = new StudySession<ReviewItem>(items);
var item = session.First();
session.Review(item, outcome);
Assert.That(session.Count(), Is.EqualTo(0));
}
public DifficultyRating AdjustDifficulty(IReviewItem item, ReviewOutcome outcome)
{
return DifficultyRating.Easiest;
}
public DifficultyRating AdjustDifficulty(IReviewItem item, ReviewOutcome outcome)
{
return(DifficultyRating.Easiest);
}
