public void TestDogById()
        {
            var dogs = DogDataProvider.AllDogs();

            Assert.IsTrue(dogs != null && dogs.Count > 0);

            foreach (var dog in dogs)
            {
                int dogId   = dog.DogId;
                var dogById = DogDataProvider.DogById(dogId);

                Assert.IsTrue(dogById != null);
                Assert.IsTrue(dogById.DogId == dogId);

                Assert.IsTrue(dog.Breed != null);
                Assert.IsTrue(dog.Image_data != null);
            }
        }