lbry-sdk/tests/client_tests/integration/test_reconnect.py

import logging
from asyncio import CancelledError

from torba.testcase import IntegrationTestCase
from torba.client.constants import COIN


class ReconnectTests(IntegrationTestCase):

    VERBOSITY = logging.WARN

    async def test_connection_drop_still_receives_events_after_reconnected(self):
        address1 = await self.account.receiving.get_or_create_usable_address()
        self.ledger.network.client.connection_lost(Exception())
        sendtxid = await self.blockchain.send_to_address(address1, 1.1337)
        await self.on_transaction_id(sendtxid)  # mempool
        await self.blockchain.generate(1)
        await self.on_transaction_id(sendtxid)  # confirmed

        self.assertEqual(round(await self.get_balance(self.account)/COIN, 4), 1.1337)
        # is it real? are we rich!? let me see this tx...
        d = self.ledger.network.get_transaction(sendtxid)
        # what's that smoke on my ethernet cable? oh no!
        self.ledger.network.client.connection_lost(Exception())
        with self.assertRaises(CancelledError):
           await d
        # rich but offline? no way, no water, let's retry
        with self.assertRaisesRegex(ConnectionError, 'connection is not available'):
            await self.ledger.network.get_transaction(sendtxid)
        # * goes to pick some water outside... * time passes by and another donation comes in
        sendtxid = await self.blockchain.send_to_address(address1, 42)
        await self.blockchain.generate(1)
        # omg, the burned cable still works! torba is fire proof!
        await self.ledger.network.get_transaction(sendtxid)