public void GetStyleShouldReturnTheRightCategory() { var options = new DbContextOptionsBuilder <TattooShopContext>() .UseInMemoryDatabase(databaseName: "Unique_Db_Name_57821987") .Options; var dbContext = new TattooShopContext(options); dbContext.Styles.Add(new Style() { Id = "1" }); dbContext.SaveChanges(); var stylesRepository = new DbRepository <Style>(dbContext); var stylesService = new StylesService(stylesRepository); var style = stylesService.GetStyle("1"); Assert.Equal("1", style.Id); }