public void ReturnCorrectArticle_WhenIdIsValid()
{
//Arrange
var dbContextMock = new Mock <ApplicationDbContext>();
var articleSetMock = new Mock <DbSet <Article> >();
var article = new Article()
{
Id = 1
};
var articles = new List <Article>()
{
article
};
articleSetMock.SetupData(articles);
dbContextMock.Setup(m => m.Articles).Returns(articleSetMock.Object);
ArticleServices service = new ArticleServices(dbContextMock.Object);
//Act
var result = service.FindArticle(1);
//Assert
Assert.AreSame(article, result);
}