public void SetUp()
{
wordCounter = Substitute.For <IWordCounter>();
wordCounter.GetCountedWords(Arg.Any <IEnumerable <Word> >()).Returns(w => w[0]);
wordSelector = Substitute.For <IWordSelector>();
wordSelector.IsSelectedWord(null).ReturnsForAnyArgs(true);
}
public IEnumerable<Word> PrepareWords(IEnumerable<string> rawWords)
{
var convertedWords = rawWords
.Select(rawWord => rawWord.ToLower())
.Select(word => new Word(word));
var countedWords = wordCounter.GetCountedWords(convertedWords);
return countedWords
.Where(word => wordSelector.IsSelectedWord(word));
}