public async Task AssertThatBuyItemsReturnsAValidResponseCodeAndCallsManager()
{
InitRequestHelper(HttpMethod.Post.Method);
var action = await _itemController.BuyItems(_items);
var response = await action.ExecuteAsync(new CancellationToken());
await _itemManager.Received().BuyItemsToUser(Arg.Any <List <Item> >(), Arg.Any <User>());
Assert.False(response.StatusCode == HttpStatusCode.InternalServerError, "InternalServerError is thrown");
Assert.IsTrue(response.StatusCode == HttpStatusCode.Created, "Status code is valid");
}
