public void PartialRecipeUpdate_Returns404NotFound_WhenNonExistentResourceIDSubmitted()
{
mockRepo.Setup(repo => repo.GetRecipeById(0)).Returns(() => null);
var controller = new RecipesController(mockRepo.Object, mapper);
var result = controller.PartialRecipeUpdate(0,
new Microsoft.AspNetCore.JsonPatch.JsonPatchDocument <RecipeUpdateDto> {
});
Assert.IsType <NotFoundResult>(result);
}