public void ApplyFermenterToRecipe() { RecipeFactory myFactory = new RecipeFactory(); IRecipe myRecipe = myFactory.GetRecipe(RecipeTypes.Beer); IngredientFactory myIngredientFactory = new IngredientFactory(); var ingredient = myIngredientFactory.GetIngredient(IngredientType.Fermentable); ingredient.Amount = 10; (ingredient as IFermentable).DiastaticPower = 1.04; myRecipe.Ingredients.Add(ingredient); myRecipe.BatchVolume = 6.5; myRecipe.TotalEfficiencyPercent = 70; var og = myRecipe.GetEstimatedOriginalGravity(); Assert.AreEqual(myRecipe.Fermentables.Count, 1); Assert.AreEqual(Math.Round(og, 3), 1.043); ingredient = myIngredientFactory.GetIngredient(IngredientType.Fermenter); (ingredient as IFerment).PitchType = FermenterPitchType.Dry; (ingredient as IFerment).Attenuation = 75; myRecipe.Ingredients.Add(ingredient); var fg = myRecipe.GetEstimatedFinalGravity(); Assert.AreEqual(Math.Round(fg, 3), 1.011); }