Bump version

CHANGELOG

@@ -1,3 +1,12 @@
+- 0.8.8
+	* Skip rules filter processing for cache when deactivated
+	* Add match-all flag to rule processing
+	* Add match-all flag to CLI to toggle setting match_all flag to rule processing for include criteria
+	* Implement state dir (rundir), and last synced block output
+- 0.8.7
+	* Upgrade chainsyncer (and shep) to avoid state deletion on partial filter list interrupts
+- 0.8.6
+	* Handle crash on conrtact creation when recipient filter is active
 - 0.8.5
 	* Instantiate constructor for chain interface superclass
 	* Remove unused settings transform method for sync interface

eth_monitor/cli/arg.py

@@ -30,6 +30,8 @@ def process_args(argparser, args, flags):
     argparser.add_argument('--store-tx-data', action='store_true', dest='store_tx_data', help='Store tx data in cache store')
     argparser.add_argument('--store-block-data', action='store_true', dest='store_block_data', help='Store block data in cache store')
     argparser.add_argument('--fresh', action='store_true', help='Do not read block and tx data from cache, even if available')
+    argparser.add_argument('--match-all', action='store_true', dest='match_all', help='Match all include filter criteria')
 
     # misc flags
     argparser.add_argument('-k', '--context-key', dest='context_key', action='append', type=str, help='Add a key-value pair to be added to the context')
+    argparser.add_argument('--run-dir', type=str, dest='run_dir', help='Output key sync and processing state properties to given diretory')

eth_monitor/cli/config.py

@@ -40,6 +40,8 @@ def process_config(config, arg, args, flags):
 
     arg_override['ETHMONITOR_CONTEXT_KEY'] = getattr(args, 'context_key')
 
+    arg_override['ETHMONITOR_MATCH_ALL'] = getattr(args, 'match_all')
+
     arg_override['ETHCACHE_STORE_BLOCK'] = getattr(args, 'store_block_data')
     arg_override['ETHCACHE_STORE_TX'] = getattr(args, 'store_tx_data')
 
@@ -54,6 +56,7 @@ def process_config(config, arg, args, flags):
 
     config.add(getattr(args, 'session_id'), '_SESSION_ID', False)
     config.add(getattr(args, 'cache_dir'), '_CACHE_DIR', False)
+    config.add(getattr(args, 'run_dir'), '_RUN_DIR', False)
     config.add(getattr(args, 'fresh'), '_FRESH', False)
 
     return config

eth_monitor/data/config/monitor.ini

@@ -19,3 +19,4 @@ block_filter =
 include_default = 0
 state_dir = ./.eth-monitor
 context_key =
+match_all = 0

eth_monitor/error.py

@@ -0,0 +1,2 @@
+class RuleFail(Exception):
+    pass

eth_monitor/filters/block.py

@@ -1,3 +1,7 @@
+# standard imports
+import os
+
+
 class Filter:
 
     def __init__(self, store, include_block_data=False):
@@ -5,5 +9,5 @@ class Filter:
         self.include_block_data = include_block_data
 
 
-    def filter(self, conn, block):
+    def filter(self, conn, block, **kwargs):
         self.store.put_block(block, include_data=self.include_block_data)

eth_monitor/filters/run.py

@@ -0,0 +1,16 @@
+# standard imports
+import os
+
+
+class Filter:
+
+    def __init__(self, run_dir):
+        self.run_dir = run_dir
+        self.fp = os.path.join(run_dir, 'block')
+
+
+    def filter(self, conn, block):
+        f = open(self.fp, 'w')
+        f.write(str(block.number))
+        f.close()
+        return False

eth_monitor/rules.py

@@ -4,6 +4,7 @@ import uuid
 
 # external imports
 from chainlib.eth.address import is_same_address
+from .error import RuleFail
 
 logg = logging.getLogger()
 
@@ -11,14 +12,17 @@ logg = logging.getLogger()
 
 class RuleData:
 
-    def __init__(self, fragments, description=None):
+    def __init__(self, fragments, description=None, match_all=False):
         self.fragments = fragments
         self.description = description
         if self.description == None:
             self.description = str(uuid.uuid4())
+        self.match_all = match_all
 
 
     def check(self, sender, recipient, data, tx_hash):
+        have_fail = False
+        have_match = False
         if len(self.fragments) == 0:
             return False
 
@@ -28,9 +32,16 @@ class RuleData:
                 continue
             if fragment in data:
                 logg.debug('tx {} rule {} match in DATA FRAGMENT {}'.format(tx_hash, self.description, fragment))
-                return True
+                if not self.match_all:
+                    return True
+                have_match = True
+            else:
+                logg.debug('data match all {}'.format(self.match_all))
+                if self.match_all:
+                    return False
+                have_fail = True
         
-        return False
+        return have_match
 
 
     def __str__(self):
@@ -41,11 +52,13 @@ class RuleData:
 
 class RuleMethod:
 
-    def __init__(self, methods, description=None):
+    def __init__(self, methods, description=None, match_all=False):
         self.methods = methods
         self.description = description
         if self.description == None:
             self.description = str(uuid.uuid4())
+        if match_all:
+            logg.warning('match_all ignord for RuleMethod rule')
 
 
     def check(self, sender, recipient, data, tx_hash):
@@ -71,28 +84,62 @@ class RuleMethod:
 
 class RuleSimple:
 
-    def __init__(self, outputs, inputs, executables, description=None):
+    def __init__(self, outputs, inputs, executables, description=None, match_all=False):
         self.description = description
         if self.description == None:
             self.description = str(uuid.uuid4())
         self.outputs = outputs
         self.inputs = inputs
         self.executables = executables
+        self.match_all = match_all
 
-
+    
     def check(self, sender, recipient, data, tx_hash):
+        r = None
+        try:
+            r = self.__check(sender, recipient, data, tx_hash)
+        except RuleFail:
+            return False
+        return r
+
+
+    def __check(self, sender, recipient, data, tx_hash):
+        have_fail = False
+        have_match = False
         for rule in self.outputs:
             if rule != None and is_same_address(sender, rule):
                 logg.debug('tx {} rule {} match in SENDER {}'.format(tx_hash, self.description, sender))
-                return True
+                if not self.match_all:
+                    return True
+                have_match = True
+            else:
+                if self.match_all:
+                    raise RuleFail(rule)
+                have_fail = True
+        if recipient == None:
+            return False
         for rule in self.inputs:
             if rule != None and is_same_address(recipient, rule):
                 logg.debug('tx {} rule {} match in RECIPIENT {}'.format(tx_hash, self.description, recipient))
-                return True
+                if not self.match_all:
+                    return True
+                have_match = True
+            else:
+                if self.match_all:
+                    raise RuleFail(rule)
+                have_fail = True
         for rule in self.executables:
             if rule != None and is_same_address(recipient, rule):
                 logg.debug('tx {} rule {} match in EXECUTABLE {}'.format(tx_hash, self.description, recipient))
-                return True
+                if not self.match_all:
+                    return True
+                have_match = True
+            else:
+                if self.match_all:
+                    raise RuleFail(rule)
+                have_fail = True
+
+        return have_match
 
 
     def __str__(self):
@@ -105,10 +152,11 @@ class RuleSimple:
 
 class AddressRules:
 
-    def __init__(self, include_by_default=False):
+    def __init__(self, include_by_default=False, match_all=False):
         self.excludes = []
         self.includes = []
         self.include_by_default = include_by_default
+        self.match_all = match_all
 
 
     def exclude(self, rule):
@@ -125,20 +173,29 @@ class AddressRules:
         return self.apply_rules_addresses(tx.outputs[0], tx.inputs[0], tx.payload, tx.hash)
 
 
-    # TODO: rename
     def apply_rules_addresses(self, sender, recipient, data, tx_hash):
         v = self.include_by_default
+        have_fail = False
+        have_match = False
 
         for rule in self.includes:
             if rule.check(sender, recipient, data, tx_hash):
                 v = True
                 logg.info('match in includes rule: {}'.format(rule))
+                if not self.match_all:
+                    break
+            elif self.match_all:
+                v = False
                 break
 
+        if not v:
+            return v
+
         for rule in self.excludes:
             if rule.check(sender, recipient, data, tx_hash):
                 v = False
                 logg.info('match in excludes rule: {}'.format(rule))
-                break
+                if not self.match_all:
-
+                    break
+    
         return v

eth_monitor/run.py

@@ -0,0 +1,17 @@
+# standard imports
+import os
+import logging
+
+logg = logging.getLogger(__name__)
+
+
+def cleanup_run(settings):
+    if not settings.get('RUN_OUT'):
+        return
+    lockfile = os.path.join(settings.get('RUN_DIR'), '.lock')
+    os.unlink(lockfile)
+    logg.debug('freed rundir {}'.format(settings.get('RUN_DIR')))
+
+
+def cleanup(settings):
+    cleanup_run(settings)

eth_monitor/runnable/sync.py

@@ -47,6 +47,7 @@ from eth_monitor.callback import (
 import eth_monitor.cli
 from eth_monitor.cli.log import process_log
 from eth_monitor.settings import process_settings as process_settings_local
+from eth_monitor.run import cleanup
 
 logg = logging.getLogger()
 
@@ -111,6 +112,8 @@ def main():
     except SyncDone as e:
         sys.stderr.write("sync {} done at block {}\n".format(drv, e))
 
+    cleanup(settings)
+
 
 if __name__ == '__main__':
     main()

eth_monitor/settings.py

@@ -34,6 +34,7 @@ from eth_monitor.filters.cache import Filter as CacheFilter
 from eth_monitor.config import override, list_from_prefix
 from eth_monitor.filters.out import OutFilter
 from eth_monitor.filters.block import Filter as BlockFilter
+from eth_monitor.filters.run import Filter as RunFilter
 
 logg = logging.getLogger(__name__)
 
@@ -47,6 +48,32 @@ def process_monitor_session(settings, config):
             session_id = 'default'
     
     settings.set('SESSION_ID', session_id)
+    settings.set('SESSION_OK', True)
+    return settings
+
+
+def process_monitor_rundir(settings, config):
+    settings.set('RUN_OUT', False)
+    if config.get('_RUN_DIR') == None:
+        return settings
+
+    run_dir = config.get('_RUN_DIR')
+    try:
+        os.makedirs(run_dir, exist_ok=True)
+    except Exception as e:
+        logg.error('could not create run dir, deactivating run output: ' + str(e))
+        return settings
+ 
+    lockfile = os.path.join(run_dir, '.lock')
+    try:
+        f = open(lockfile, 'x')
+        f.close()
+    except FileExistsError:
+        logg.error('run dir {} is already in use, deactivating run output'.format(run_dir))
+        return settings
+  
+    settings.set('RUN_OUT', True)
+    settings.set('RUN_DIR', run_dir)
     return settings
 
 
@@ -130,6 +157,7 @@ def process_address_arg_rules(settings, config):
             category['input']['i'],
             category['exec']['i'],
             description='INCLUDE',
+            match_all=settings.get('MATCH_ALL'),
             )
     rules.include(includes)
 
@@ -167,7 +195,7 @@ def process_data_arg_rules(settings, config):
     for v in config.get('ETHMONITOR_X_DATA_IN'):
         exclude_data.append(v.lower())
 
-    includes = RuleData(include_data, description='INCLUDE')
+    includes = RuleData(include_data, description='INCLUDE', match_all=settings.get('MATCH_ALL'))
     rules.include(includes)
    
     excludes = RuleData(exclude_data, description='EXCLUDE')
@@ -211,7 +239,7 @@ def process_address_file_rules(settings, config): #rules, includes_file=None, ex
             except IndexError:
                 pass
 
-            rule = RuleSimple(sender, recipient, executable)
+            rule = RuleSimple(sender, recipient, executable, match_all=settings.get('MATCH_ALL'))
             rules.include(rule)
 
     excludes_file = config.get('ETHMONITOR_EXCLUDES_FILE')
@@ -243,6 +271,7 @@ def process_address_file_rules(settings, config): #rules, includes_file=None, ex
 
 def process_arg_rules(settings, config):
     address_rules = AddressRules(include_by_default=config.get('ETHMONITOR_INCLUDE_DEFAULT'))
+    settings.set('MATCH_ALL', config.true('ETHMONITOR_MATCH_ALL'))
     settings.set('RULES', address_rules)
     settings = process_address_arg_rules(settings, config)
     settings = process_data_arg_rules(settings, config)
@@ -272,7 +301,10 @@ def process_cache_store(settings, config):
 
 def process_cache_filter(settings, config):
     cache_store = settings.get('CACHE_STORE')
-    fltr = CacheFilter(cache_store, rules_filter=settings.o['RULES'], include_tx_data=config.true('ETHCACHE_STORE_TX'))
+    cache_rules = AddressRules(include_by_default=True)
+    if str(cache_store) != 'Nullstore':
+        cache_rules = settings.o['RULES'] 
+    fltr = CacheFilter(cache_store, rules_filter=cache_rules, include_tx_data=config.true('ETHCACHE_STORE_TX'))
     sync_store = settings.get('SYNC_STORE')
     sync_store.register(fltr)
     
@@ -283,6 +315,14 @@ def process_cache_filter(settings, config):
     return settings
 
 
+def process_run_filter(settings, config):
+    if not settings.get('RUN_OUT'):
+        return settings
+    fltr = RunFilter(settings.get('RUN_DIR'))
+    hndlr = settings.get('BLOCK_HANDLER')
+    hndlr.register(fltr)
+    return settings
+
 def process_tx_filter(settings, config):
     for fltr in list_from_prefix(config, 'filter'):
         m = importlib.import_module(fltr)
@@ -330,6 +370,7 @@ def process_filter(settings, config):
     settings = process_renderer(settings, config)
     settings = process_block_filter(settings, config)
     settings = process_cache_filter(settings, config)
+    settings = process_run_filter(settings, config)
     settings = process_tx_filter(settings, config)
     settings = process_out_filter(settings, config)
     settings = process_arg_filter(settings, config)
@@ -378,6 +419,7 @@ def process_user_context(settings, config):
             ctx_usr[k] = v
     ctx = {
         'driver': 'eth-monitor',
+        'rundir': settings.get('RUN_DIR'),
         'usr': ctx_usr,
             }
     settings.set('SYNCER_CONTEXT', ctx)
@@ -387,6 +429,7 @@ def process_user_context(settings, config):
 def process_settings(settings, config):
     settings = process_monitor_session(settings, config)
     settings = process_monitor_session_dir(settings, config)
+    settings = process_monitor_rundir(settings, config)
     settings = process_arg_rules(settings, config)
     settings = process_sync(settings, config)
     settings = process_cache(settings, config)

requirements.txt

@@ -1,6 +1,6 @@
-chainlib-eth~=0.5.1
+chainlib-eth~=0.6.0
 chainlib~=0.5.2
-chainsyncer~=0.8.3
+chainsyncer~=0.8.5
 leveldir~=0.3.0
-eth-cache~=0.3.0
+eth-cache~=0.4.0
 confini~=0.6.3

run_tests.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+set -a
+set -e
+set -x
+default_pythonpath=$PYTHONPATH:.
+export PYTHONPATH=${default_pythonpath:-.}
+>&2 echo using pythonpath $PYTHONPATH
+for f in `ls tests/*.py`; do
+	python $f
+done
+for f in `ls tests/rules/*.py`; do
+	python $f
+done
+set +x
+set +e
+set +a

setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = eth-monitor
-version = 0.8.5
+version = 0.8.9
 description = Monitor and cache transactions using match filters
 author = Louis Holbrook
 author_email = dev@holbrook.no

test_requirements.txt

@@ -1,5 +1,5 @@
-eth_tester==0.5.0b3
+eth_tester==0.10.0b4
-py-evm==0.3.0a20
+py-evm==0.10.0b4
-rlp==2.0.1
+rlp==3.0.0
 pytest==6.0.1
 coverage==5.5

tests/rules/test_base.py

@@ -0,0 +1,160 @@
+# standard imports
+import logging
+import unittest
+import os
+
+# local imports
+from eth_monitor.rules import *
+
+logging.basicConfig(level=logging.DEBUG)
+logg = logging.getLogger()
+
+
+class TestRule(unittest.TestCase):
+
+    def setUp(self):
+        self.alice = os.urandom(20).hex()
+        self.bob = os.urandom(20).hex()
+        self.carol = os.urandom(20).hex()
+        self.dave = os.urandom(20).hex()
+        self.x = os.urandom(20).hex()
+        self.y = os.urandom(20).hex()
+        self.hsh = os.urandom(32).hex()
+
+    
+    def test_address_include(self):
+        data = b''
+        outs = [self.alice]
+        ins = []
+        execs = []
+        rule = RuleSimple(outs, ins, execs)
+        c = AddressRules()
+        c.include(rule)
+        r = c.apply_rules_addresses(self.alice, self.bob, data, self.hsh)
+        self.assertTrue(r)
+        r = c.apply_rules_addresses(self.bob, self.alice, data, self.hsh)
+        self.assertFalse(r)
+
+        outs = []
+        ins = [self.alice]
+        execs = []
+        rule = RuleSimple(outs, ins, execs)
+        c = AddressRules()
+        c.include(rule)
+        r = c.apply_rules_addresses(self.alice, self.bob, data, self.hsh)
+        self.assertFalse(r)
+        r = c.apply_rules_addresses(self.bob, self.alice, data, self.hsh)
+        self.assertTrue(r)
+
+        outs = []
+        ins = []
+        execs = [self.x]
+        rule = RuleSimple(outs, ins, execs)
+        c = AddressRules()
+        c.include(rule)
+        r = c.apply_rules_addresses(self.alice, self.x, data, self.hsh)
+        self.assertTrue(r)
+        r = c.apply_rules_addresses(self.bob, self.alice, data, self.hsh)
+        self.assertFalse(r)
+
+        data = b'deadbeef0123456789'
+        data_match = [data[:8]]
+        rule = RuleMethod(data_match)
+        c = AddressRules()
+        c.include(rule)
+        r = c.apply_rules_addresses(self.alice, self.x, data, self.hsh)
+        self.assertTrue(r)
+        r = c.apply_rules_addresses(self.bob, self.alice, b'abcd' + data, self.hsh)
+        self.assertFalse(r)
+
+        rule = RuleData(data_match)
+        c = AddressRules()
+        c.include(rule)
+        r = c.apply_rules_addresses(self.alice, self.x, data, self.hsh)
+        self.assertTrue(r)
+        r = c.apply_rules_addresses(self.bob, self.alice, b'abcd' + data, self.hsh)
+        self.assertTrue(r)
+
+
+    def test_address_exclude(self):
+        data = b''
+        outs = [self.alice]
+        ins = []
+        execs = []
+        rule = RuleSimple(outs, ins, execs)
+
+        c = AddressRules()
+        c.exclude(rule)
+        r = c.apply_rules_addresses(self.alice, self.bob, data, self.hsh)
+        self.assertFalse(r)
+        r = c.apply_rules_addresses(self.bob, self.alice, data, self.hsh)
+        self.assertFalse(r)
+
+        c = AddressRules(include_by_default=True)
+        c.exclude(rule)
+        r = c.apply_rules_addresses(self.alice, self.bob, data, self.hsh)
+        self.assertFalse(r)
+        r = c.apply_rules_addresses(self.bob, self.alice, data, self.hsh)
+        self.assertTrue(r)
+
+        outs = []
+        ins = [self.alice]
+        execs = []
+        rule = RuleSimple(outs, ins, execs)
+        c = AddressRules(include_by_default=True)
+        c.exclude(rule)
+        r = c.apply_rules_addresses(self.alice, self.bob, data, self.hsh)
+        self.assertTrue(r)
+        r = c.apply_rules_addresses(self.bob, self.alice, data, self.hsh)
+        self.assertFalse(r)
+
+        outs = []
+        ins = []
+        execs = [self.x]
+        rule = RuleSimple(outs, ins, execs)
+        c = AddressRules(include_by_default=True)
+        c.exclude(rule)
+        r = c.apply_rules_addresses(self.alice, self.x, data, self.hsh)
+        self.assertFalse(r)
+        r = c.apply_rules_addresses(self.bob, self.alice, data, self.hsh)
+        self.assertTrue(r)
+
+        data = b'deadbeef0123456789'
+        data_match = [data[:8]]
+        rule = RuleMethod(data_match)
+        c = AddressRules(include_by_default=True)
+        c.exclude(rule)
+        r = c.apply_rules_addresses(self.alice, self.x, data, self.hsh)
+        self.assertFalse(r)
+        r = c.apply_rules_addresses(self.bob, self.alice, b'abcd' + data, self.hsh)
+        self.assertTrue(r)
+
+        rule = RuleData(data_match)
+        c = AddressRules(include_by_default=True)
+        c.exclude(rule)
+        r = c.apply_rules_addresses(self.alice, self.x, data, self.hsh)
+        self.assertFalse(r)
+        r = c.apply_rules_addresses(self.bob, self.alice, b'abcd' + data, self.hsh)
+        self.assertFalse(r)
+        r = c.apply_rules_addresses(self.bob, self.alice, b'abcd', self.hsh)
+        self.assertTrue(r)
+
+    
+    def test_address_include_exclude(self):
+        data = b''
+        outs = [self.alice]
+        ins = []
+        execs = []
+        rule = RuleSimple(outs, ins, execs)
+        c = AddressRules()
+        c.include(rule)
+        c.exclude(rule)
+        r = c.apply_rules_addresses(self.alice, self.bob, data, self.hsh)
+        self.assertFalse(r)
+        r = c.apply_rules_addresses(self.bob, self.alice, data, self.hsh)
+        self.assertFalse(r)
+
+
+
+if __name__ == '__main__':
+    unittest.main()

tests/rules/test_greedy.py

@@ -0,0 +1,90 @@
+import logging
+import unittest
+import os
+
+# local imports
+from eth_monitor.rules import *
+
+logging.basicConfig(level=logging.DEBUG)
+logg = logging.getLogger()
+
+
+class TestRule(unittest.TestCase):
+
+    def setUp(self):
+        self.alice = os.urandom(20).hex()
+        self.bob = os.urandom(20).hex()
+        self.carol = os.urandom(20).hex()
+        self.dave = os.urandom(20).hex()
+        self.x = os.urandom(20).hex()
+        self.y = os.urandom(20).hex()
+        self.hsh = os.urandom(32).hex()
+
+
+    def test_greedy_includes(self):
+        data = b''
+        outs = [self.alice]
+        ins = [self.carol]
+        execs = []
+        rule = RuleSimple(outs, ins, execs, match_all=True)
+        c = AddressRules()
+        c.include(rule)
+        r = c.apply_rules_addresses(self.alice, self.bob, data, self.hsh)
+        self.assertFalse(r)
+        r = c.apply_rules_addresses(self.bob, self.alice, data, self.hsh)
+        self.assertFalse(r)
+        r = c.apply_rules_addresses(self.bob, self.carol, data, self.hsh)
+        self.assertFalse(r)
+        r = c.apply_rules_addresses(self.alice, self.carol, data, self.hsh)
+        self.assertTrue(r)
+
+        rule = RuleSimple(outs, ins, execs)
+        c = AddressRules(match_all=True)
+        c.include(rule)
+        r = c.apply_rules_addresses(self.alice, self.bob, data, self.hsh)
+        self.assertTrue(r)
+        r = c.apply_rules_addresses(self.bob, self.alice, data, self.hsh)
+        self.assertFalse(r)
+        r = c.apply_rules_addresses(self.bob, self.carol, data, self.hsh)
+        self.assertTrue(r)
+        r = c.apply_rules_addresses(self.alice, self.carol, data, self.hsh)
+        self.assertTrue(r)
+
+
+    def test_greedy_data(self):
+        data = os.urandom(128).hex()
+        data_match_one = data[4:8]
+        data_match_two = data[32:42]
+        data_match_fail = os.urandom(64).hex()
+        data_match = [data_match_one]
+
+        rule = RuleData(data_match, match_all=True)
+        c = AddressRules()
+        c.include(rule)
+        r = c.apply_rules_addresses(self.alice, self.bob, data, self.hsh)
+        self.assertTrue(r)
+
+        data_match = [data_match_two]
+        rule = RuleData(data_match, match_all=True)
+        c = AddressRules()
+        c.include(rule)
+        r = c.apply_rules_addresses(self.alice, self.bob, data, self.hsh)
+        self.assertTrue(r)
+
+        data_match = [data_match_two, data_match_one]
+        rule = RuleData(data_match, match_all=True)
+        c = AddressRules()
+        c.include(rule)
+        r = c.apply_rules_addresses(self.alice, self.bob, data, self.hsh)
+        self.assertTrue(r)
+
+        data_match = [data_match_two, data_match_fail, data_match_one]
+        rule = RuleData(data_match, match_all=True)
+        c = AddressRules()
+        c.include(rule)
+        r = c.apply_rules_addresses(self.alice, self.bob, data, self.hsh)
+        self.assertFalse(r)
+
+
+if __name__ == '__main__':
+    unittest.main()