public async Task TestPostAnimalAppropriateId()
{
var controller = new AnimalsController(context);
Animal animal = context.Animal.Find(ID_TO_FIND);
animal.Id = EXPECTED_SIZE_OF_ALL + 1;
animal.Type = CHANGED_TEXT;
var newAnimal = await controller.PostAnimal(animal);
var actionResult = Assert.IsType <ActionResult <Animal> >(newAnimal);
Assert.IsType <CreatedAtActionResult>(actionResult.Result);
Assert.NotNull(actionResult);
long expectedSize = EXPECTED_SIZE_OF_ALL + 1;
animal = context.Animal.Find(expectedSize);
Assert.Equal(CHANGED_TEXT, animal.Type);
Assert.Equal(expectedSize, animal.Id);
}