public void GetByExhibit()
{
// Prepare test data
Article firstArticle = _articles.First();
Exhibit ex = DbFactory.CreateExhibit((item) => item.Articles = new[] { firstArticle });
// Arrange
ArticlesService service = Scope.Resolve <ArticlesService>();
// Act
IEnumerable <Article> result = service.GetByExhibit(ex.ExhibitID);
// Assert
Assert.IsNotNull(result.Any());
}