public void Can_delete_and_empty_stores_in_cloud()
        {
            CloudInfrastructure cloud = new CloudInfrastructure();

            cloud.CreateStore("myFiles");
            cloud.CreateStore("myImages");
            cloud.UploadDocument("myImages", "picture.jpeg", "profile.png");

            cloud.DeleteStore("myFiles"); // delete a store
            Assert.AreEqual("myImages:picture.jpeg, profile.png", cloud.ListStores());

            cloud.EmptyStore("myImages");                          // empty a store
            Assert.AreEqual("myImages:empty", cloud.ListStores()); // an empty store is display as "empty"
        }