public void SuggestionServiceReturnsCorrectSimilarWords()
{
// Arrange
string input = _dict.GetRandomWordKey();
var expectedValues = _dict.Values.Where(w => w.Links.Any(wl => string.Equals(wl.Text, input)))
.SelectMany(w => w.Links)
.Select(w => w.Text)
.Where(wt => !string.Equals(wt, input))
.GroupBy(w => w)
.OrderByDescending(w => w.Count())
.Select(w => w.Key)
.ToList();
// Act
var actualValues = _suggestionService.GetSimilarWords(input);
// Assert
CollectionAssert.AreEqual(expectedValues, actualValues);
}