2021-04-15 09:59:45 +02:00
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# standard imports
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import logging
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import unittest
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import os
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# external imports
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from chainlib.chain import ChainSpec
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# local imports
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from chainsyncer.backend.memory import MemBackend
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# test imports
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from tests.base import TestBase
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2021-04-15 11:15:48 +02:00
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from chainsyncer.unittest.base import (
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MockBlock,
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TestSyncer,
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)
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2021-04-15 09:59:45 +02:00
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logging.basicConfig(level=logging.DEBUG)
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logg = logging.getLogger()
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class NaughtyCountExceptionFilter:
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def __init__(self, name, croak_on):
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self.c = 0
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self.croak = croak_on
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self.name = name
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def filter(self, conn, block, tx, db_session=None):
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if self.c == self.croak:
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self.croak = -1
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raise RuntimeError('foo')
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self.c += 1
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2021-04-15 09:59:45 +02:00
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def __str__(self):
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return '{} {}'.format(self.__class__.__name__, self.name)
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class CountFilter:
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def __init__(self, name):
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self.c = 0
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self.name = name
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def filter(self, conn, block, tx, db_session=None):
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self.c += 1
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def __str__(self):
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return '{} {}'.format(self.__class__.__name__, self.name)
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class TestInterrupt(unittest.TestCase):
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def setUp(self):
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self.chain_spec = ChainSpec('foo', 'bar', 42, 'baz')
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self.backend = MemBackend(self.chain_spec, None, target_block=4)
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self.syncer = TestSyncer(self.backend, [4, 2, 3])
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def test_filter_interrupt(self):
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fltrs = [
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CountFilter('foo'),
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CountFilter('bar'),
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NaughtyCountExceptionFilter('xyzzy', 3),
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CountFilter('baz'),
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]
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for fltr in fltrs:
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self.syncer.add_filter(fltr)
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try:
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self.syncer.loop(0.1, None)
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except RuntimeError:
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logg.info('caught croak')
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pass
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self.syncer.loop(0.1, None)
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for fltr in fltrs:
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logg.debug('{} {}'.format(str(fltr), fltr.c))
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#self.assertEqual(fltr.c, 11)
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2021-04-15 09:59:45 +02:00
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if __name__ == '__main__':
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unittest.main()
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