def auction_with_a_winner(input_dto: WithdrawingBidsInputDto) -> Auction:
losing_bid = Bid(id=4, bidder_id=2, amount=get_dollars('5.50'))
winning_bid = Bid(id=2, bidder_id=1, amount=get_dollars('6.00'))
return Auction(id=2,
title='does not matter',
initial_price=get_dollars('5.00'),
bids=[winning_bid, losing_bid])
def test_should_return_highest_bid_for_current_price():
auction = create_auction(bids=[
Bid(id=1, bidder_id=1, amount=get_dollars('20')),
Bid(id=2, bidder_id=2, amount=get_dollars('15')),
])
assert auction.current_price == get_dollars('20')
def test_should_return_highest_bids_user_id_for_winners_list():
auction = create_auction(bids=[
Bid(id=1, bidder_id=1, amount=get_dollars('101')),
Bid(id=2, bidder_id=2, amount=get_dollars('15')),
Bid(id=3, bidder_id=3, amount=get_dollars('100')),
])
assert auction.winners == [1]
def test_gets_existing_auction(auction_model_with_a_bid: AuctionModel,
winning_bid_amount: Decimal) -> None:
auction = DjangoORMAuctionsRepository().get(auction_model_with_a_bid.id)
assert auction.id == auction_model_with_a_bid.id
assert auction.title == auction_model_with_a_bid.title
assert auction.initial_price == get_dollars(
auction_model_with_a_bid.initial_price)
assert auction.current_price == get_dollars(winning_bid_amount)
def test_should_not_be_winning_if_bid_lower_than_current_price() -> None:
auction = create_auction(bids=[
Bid(id=1, bidder_id=1, amount=get_dollars('10.00'))
])
lower_bid = Bid(id=None, bidder_id=2, amount=get_dollars('5.00'))
auction.make_a_bid(lower_bid)
assert lower_bid.bidder_id not in auction.winners
def get(self, auction_id: int) -> Auction:
from auctions.models import Auction as AuctionModel
auction_model = AuctionModel.objects.prefetch_related('bid_set').get(id=auction_id)
return Auction(
id=auction_model.id,
title=auction_model.title,
initial_price=get_dollars(auction_model.initial_price),
bids=[
Bid(id=bid_model.id, bidder_id=bid_model.bidder_id, amount=get_dollars(bid_model.amount))
for bid_model in auction_model.bid_set.all()
]
)
def test_removes_withdrawn_bids(
auction_model_with_a_bid: AuctionModel) -> None:
bid_model = auction_model_with_a_bid.bid_set.first()
auction = Auction(id=auction_model_with_a_bid.id,
title=auction_model_with_a_bid.title,
initial_price=get_dollars(
auction_model_with_a_bid.initial_price),
bids=[
Bid(bid_model.id, bid_model.bidder_id,
get_dollars(bid_model.amount)),
])
auction.withdrawn_bids_ids = [bid_model.id]
DjangoORMAuctionsRepository().save(auction)
assert auction_model_with_a_bid.bid_set.count() == 0
def test_saves_auction_changes(auction_model_with_a_bid: AuctionModel) -> None:
bid_model = auction_model_with_a_bid.bid_set.first()
auction = Auction(id=auction_model_with_a_bid.id,
title=auction_model_with_a_bid.title,
initial_price=get_dollars(
auction_model_with_a_bid.initial_price),
bids=[
Bid(bid_model.id, bid_model.bidder_id,
get_dollars(bid_model.amount)),
Bid(None, bid_model.bidder_id,
get_dollars(bid_model.amount))
])
DjangoORMAuctionsRepository().save(auction)
assert auction_model_with_a_bid.bid_set.count() == 2
def test_should_add_withdrawn_bids_ids_to_separate_list():
auction = create_auction(bids=[
Bid(id=1, bidder_id=1, amount=get_dollars('50'))
])
auction.withdraw_bids([1])
assert auction.withdrawn_bids_ids == [1]
def test_should_withdraw_the_only_bid():
auction = create_auction(bids=[
Bid(id=1, bidder_id=1, amount=get_dollars('50'))
])
auction.withdraw_bids([1])
assert auction.winners == []
assert auction.current_price == auction.initial_price
def make_a_bid(request: HttpRequest, auction_id: int) -> HttpResponse:
data = json.loads(request.body)
input_dto = dacite.from_dict(
placing_bid.PlacingBidInputDto, {
'bidder_id': request.user.id,
'auction_id': auction_id,
'amount': get_dollars(data['amount'])
})
presenter = PlacingBidPresenter()
uc = placing_bid.PlacingBidUseCase(presenter)
uc.execute(input_dto)
return presenter.get_http_response()
def create_auction(bids: typing.List[Bid] = None) -> Auction:
if not bids:
bids = []
return Auction(id=1, title='', initial_price=get_dollars('10'), bids=bids)
def test_should_not_be_winning_auction_if_bids_below_initial_price():
auction = create_auction()
auction.make_a_bid(Bid(id=None, bidder_id=1, amount=get_dollars('5')))
assert auction.winners == []
def test_should_win_auction_if_is_the_only_bidder_above_initial_price():
auction = create_auction()
auction.make_a_bid(Bid(id=None, bidder_id=1, amount=get_dollars('11')))
assert auction.winners == [1]
def auction(exemplary_auction_id: int) -> Auction:
return Auction(id=exemplary_auction_id,
title='irrelevant',
initial_price=get_dollars('2.00'),
bids=[])
def amount() -> Money:
return get_dollars('10.00')
