private async Task GetAllShouldReturnListOfBlogPostsFromDB()
{
var options = new DbContextOptionsBuilder <ApplicationDbContext>()
.UseInMemoryDatabase(databaseName: Guid.NewGuid().ToString()).Options;
var dbContext = new ApplicationDbContext(options);
dbContext.BlogPosts.Add(new BlogPost());
await dbContext.SaveChangesAsync();
var blogPostRepository = new EfDeletableEntityRepository <BlogPost>(dbContext);
var service = new BlogPostService(blogPostRepository);
Assert.True(service.GetAll().Count() == 1);
}