public async Task ClearBasket()
{
var response = await _controller.ClearBasket(0);
Assert.IsInstanceOf <BadRequestObjectResult>(response);
await _storage.AddOrUpdateItemAsync(new Item { Id = 1 });
var id = await _storage.InitBasketAsync();
response = await _controller.AddItemToBasket(id, 1, 1);
Assert.IsInstanceOf <NoContentResult>(response);
response = await _controller.ClearBasket(id);
Assert.IsInstanceOf <NoContentResult>(response);
}