private Func <Flashcard, object> GetLambda(FlashcardsSortingCriterion criterion)
{
switch (criterion)
{
case FlashcardsSortingCriterion.None:
return(f => f.Id);
case FlashcardsSortingCriterion.Key:
return(f => f.Key);
case FlashcardsSortingCriterion.Value:
return(f => f.Value);
case FlashcardsSortingCriterion.KeyDescription:
return(f => f.KeyDescription);
case FlashcardsSortingCriterion.ValueDescription:
return(f => f.ValueDescription);
case FlashcardsSortingCriterion.Category:
return(f => f.Category.Name);
default:
throw new ArgumentOutOfRangeException();
}
}
public void InvalidFilteringModel(bool descending, FlashcardsSortingCriterion criterion)
{
var model = new FlashcardsFilteringModel("", criterion, descending, 1, 1);
var query = Context.Flashcards.AsQueryable();
Assert.Throws <ArgumentOutOfRangeException>(() => FilteringServices.Filter(query, model));
}
public void ReturnsProperlyFilteredCategories(string searchText, FlashcardsSortingCriterion criterion,
bool descending, int pageIndex, int pageSize)
{
var model = new FlashcardsFilteringModel(searchText, criterion, descending, pageIndex, pageSize);
var categories = AddCategories();
var flashards = AddFlashcards(categories[0], 50);
var query = Context.Flashcards.AsQueryable();
var filteredFlashcards = FilteringServices.Filter(query, model).ToList();
var expected = flashards.Where(f =>
f.Key.Contains(model.SearchText) || f.Value.Contains(model.SearchText) || f.KeyDescription.Contains(model.SearchText) ||
f.ValueDescription.Contains(model.SearchText) || f.Category.Name.Contains(model.SearchText));
var lambda = GetLambda(criterion);
expected = descending ? expected.OrderByDescending(lambda) : expected.OrderBy(lambda);
var expectedList = expected.Skip(model.PageIndex * model.PageSize).Take(model.PageSize)
.ToList();
Assert.Equal(expectedList.Count, filteredFlashcards.Count);
for (var i = 0; i < expectedList.Count; i++)
{
var returned = filteredFlashcards[i];
var exp = new FlashcardDto(expectedList[i]);
Assert.True(exp.Id == returned.Id);
}
}
public FlashcardsFilteringModel(string searchText, FlashcardsSortingCriterion sortingCriterion,
bool descending, int pageIndex, int pageSize) : base(searchText, descending, pageIndex, pageSize)
{
SortingCriterion = sortingCriterion;
}
