How to use the futures.models.SuccessfulTransaction.objects.filter function in futures

order_1 = Order.objects.get(pk=1)  # Buy 10@155
        self.assertEqual(order_1.filled, True)
        self.assertEqual(order.filled, False)
        self.assertEqual(order.quantity, 1)
        self.assertEqual(order_1.filled_by, user)
        ### Future
        future = Future.objects.get(pk=1)
        self.assertEqual(future.last_buy, 155)
        self.assertEqual(future.ask, 140)
        self.assertEqual(future.bid, None)
        self.assertEqual(future.volume, 10)
        history = FutureHistory.objects.filter(future=future)
        logger.debug(history)
        self.assertEqual(history.count(), 1)
        self.assertEqual(history[0].price, 155)
        transactions = SuccessfulTransaction.objects.filter(future=future)
        self.assertEqual(transactions.count(), 1)
        self.assertTrue(self.compare_transactions(
            transactions[0], SuccessfulTransaction(
                buyer=order_1.creator, seller=user, future=future,
                quantity=10, unit_price=155)))
        # Wallets.
        wallet = Wallet.objects.get(user=user)
        wallet_1 = Wallet.objects.get(user=order_1.creator)
        key = '%s' % future.pk
        self.assertEqual(json.loads(wallet_1.shares_owned)[key], 10)
        self.assertEqual(wallet.points, 11000 + (10 * 155))
        self.assertEqual(wallet_1.points, 10000 - (10 * 155))
        self.assertEqual(wallet.frozen, 11000)

self.assertEqual(order.filled_by, order_2.creator)
        self.assertEqual(order_2.quantity, 5)  # 3 got bought
        self.assertEqual(order_1.filled_by, user)
        self.assertEqual(order_2.filled_by, None)
        future = Future.objects.get(pk=4)
        self.assertEqual(future.last_buy, 600)
        self.assertEqual(future.ask, 600)  # Lowest sale order
        self.assertEqual(future.bid, 275)  # Highest buy order
        self.assertEqual(future.volume, 7)
        # History
        history = FutureHistory.objects.filter(future=future)
        self.assertEqual(history.count(), 2)
        # Lowest then highest.
        self.assertEqual(history[0].price, 325)
        self.assertEqual(history[1].price, 600)
        transactions = SuccessfulTransaction.objects.filter(future=future)
        self.assertEqual(transactions.count(), 2)
        self.assertTrue(self.compare_transactions(
            transactions[0], SuccessfulTransaction(
                buyer=user, seller=order_1.creator, future=future,
                quantity=4, unit_price=325)))
        self.assertTrue(self.compare_transactions(
            transactions[1], SuccessfulTransaction(
                buyer=user, seller=order_2.creator, future=future,
                quantity=3, unit_price=600)))
        # Wallets
        wallet = Wallet.objects.get(user=user)
        wallet_1 = Wallet.objects.get(user=order_1.creator)
        wallet_2 = Wallet.objects.get(user=order_2.creator)
        key = '%s' % future.pk
        self.assertEqual(json.loads(wallet.shares_owned)[key], -2)
        self.assertEqual(json.loads(wallet_1.shares_owned)[key], -4)

self.assertEqual(order_2.filled, True)
        self.assertEqual(order.filled, False)
        self.assertEqual(order.quantity, 3)
        self.assertEqual(order_1.filled_by, user)
        self.assertEqual(order_2.filled_by, user)
        future = Future.objects.get(pk=4)
        self.assertEqual(future.last_buy, 100)
        self.assertEqual(future.ask, 95)  # Lowest sale order, my own
        self.assertEqual(future.bid, None)  # Highest buy order
        self.assertEqual(future.volume, 90)
        # History
        history = FutureHistory.objects.filter(future=future)
        self.assertEqual(history.count(), 2)
        self.assertEqual(history[0].price, 275)
        self.assertEqual(history[1].price, 100)  # Got the highest then lowest.
        transactions = SuccessfulTransaction.objects.filter(future=future)
        self.assertEqual(transactions.count(), 2)
        self.assertTrue(self.compare_transactions(
            transactions[0], SuccessfulTransaction(
                buyer=order_1.creator, seller=user, future=future,
                quantity=15, unit_price=275)))
        self.assertTrue(self.compare_transactions(
            transactions[1], SuccessfulTransaction(
                buyer=order_2.creator, seller=user, future=future,
                quantity=75, unit_price=100)))
        # Wallets
        wallet = Wallet.objects.get(user=user)
        wallet_1 = Wallet.objects.get(user=order_1.creator)
        wallet_2 = Wallet.objects.get(user=order_2.creator)
        key = '%s' % future.pk
        self.assertEqual(json.loads(wallet.shares_owned)[key], 5)
        self.assertEqual(json.loads(wallet_1.shares_owned)[key], 15)