public void Specification_NotSpecification_ShouldFilterMovies()
{
// Arrange
var movieCount = MovieFactory.GetMixedMovies().Count(m =>
m.MpaaRating > MpaaRating.PG && // Not for kids
m.Rating >= 4); // Best ratigs
var kidSpec = new MovieForKidsSpecificationValidator();
var dirBest = new BestRatedFilmsSpecificationValidator();
var movieSpec = dirBest.And(kidSpec.Not());
// Act
var result = MovieFactory.GetMixedMovies().Where(movieSpec.IsSatisfiedBy);
// Assert
Assert.Equal(movieCount, result.Count());
}
