public void ShouldDeleteHashtag()
{
//arrange
var user = GenerateUser();
var hashtag = Guid.NewGuid().ToString();
//act
var dataLayer = new DataLayer.Sql.DataLayer(ConnectionSql);
dataLayer.AddUser(user);
var photo = GeneratePhoto(user.Id);
dataLayer.AddPhoto(photo);
var comment = GenerateComment(user.Id, photo.Id);
dataLayer.AddComment(comment);
comment = dataLayer.AddHashtag(comment, hashtag);
dataLayer.DeleteHashtag(comment, hashtag);
var haveHashtag = dataLayer.HaveHashtag(comment, hashtag);
//assert
Assert.AreEqual(haveHashtag, false);
}