public void ShouldReturnZeroOnEmpty()
{
var emptyReviewer = ReviewerBuilder.BuildReviewerWithNoReviews();
var similarReviews = new List<string>();
var sumDifferenceSquares = new SumDifferenceSquares(similarReviews, emptyReviewer.Reviews, emptyReviewer.Reviews).Calculate();
Assert.AreEqual(0.0, sumDifferenceSquares);
}
public void ShouldReturnZeroWithNoSimilarReviews()
{
var highScoreReviewer = ReviewerBuilder.BuildAllMaxScores();
var lowScoreReviewer = ReviewerBuilder.BuildAllMidScores();
var similarReviews = new List<string>();
var sumDifferenceSquares = new SumDifferenceSquares(similarReviews, highScoreReviewer.Reviews, lowScoreReviewer.Reviews).Calculate();
Assert.AreEqual(0.0, sumDifferenceSquares);
}
public void ShouldReturnZeroWithIdenticalReviews()
{
var highScoreReviewer = ReviewerBuilder.BuildOneReviewMax();
var similarReviews = new List<string>();
similarReviews.Add("C# in Depth");
var sumDifferenceSquares = new SumDifferenceSquares(similarReviews, highScoreReviewer.Reviews, highScoreReviewer.Reviews).Calculate();
Assert.AreEqual(0.0, sumDifferenceSquares);
}
public void ShouldCalculateTheSumOfTheSquareOfTheDifferenceOfASingleSimilarReview()
{
var highScoreReviewer = ReviewerBuilder.BuildOneReviewMax();
var lowScoreReviewer = ReviewerBuilder.BuildOneReviewMid();
var similarReviews = new List<string>();
similarReviews.Add("C# in Depth");
var sumDifferenceSquares = new SumDifferenceSquares(similarReviews, highScoreReviewer.Reviews, lowScoreReviewer.Reviews).Calculate();
Assert.AreEqual(4.0, sumDifferenceSquares);
}
public void ShouldCalculateTheSumOfTheSquareOfTheDifferenceOfMultipleSimilarReviews()
{
var highScoreReviewer = ReviewerBuilder.BuildAllMaxScores();
var lowScoreReviewer = ReviewerBuilder.BuildAllMidScores();
var similarReviews = new List<string>();
similarReviews.Add("C# in Depth");
similarReviews.Add("Refactoring");
similarReviews.Add("Clean Code");
var sumDifferenceSquares = new SumDifferenceSquares(similarReviews, highScoreReviewer.Reviews, lowScoreReviewer.Reviews).Calculate();
Assert.AreEqual(12.0, sumDifferenceSquares);
}
public double Score()
{
SimilarReviews = new FindSimilarReviews(R1.Reviews, R2.Reviews).Calculate();
if (ReviewersHaveNoSimilarReviews())
{
return 0.0;
}
var sumDifferenceSquares = new SumDifferenceSquares(SimilarReviews, R1.Reviews, R2.Reviews).Calculate();
return NormalizeAnswer(sumDifferenceSquares);
}
