with self.assertRaises(bt2.TryAgain):
next(it)
+ def test_error_in_iterator_with_cycle_after_having_created_upstream_iterator(self):
+ # Test a failure that triggered an abort in libbabeltrace2, in this situation:
+ #
+ # - The filter iterator creates an upstream iterator.
+ # - The filter iterator creates a reference cycle, including itself.
+ # - An exception is raised, causing the filter iterator's
+ # initialization method to fail.
+ class MySourceIter(bt2._UserMessageIterator):
+ pass
+
+ class MySource(bt2._UserSourceComponent, message_iterator_class=MySourceIter):
+ def __init__(self, config, params, obj):
+ self._add_output_port('out')
+
+ class MyFilterIter(bt2._UserMessageIterator):
+ def __init__(self, config, port):
+ # First, create an upstream iterator.
+ self._upstream_iter = self._create_input_port_message_iterator(
+ self._component._input_ports['in']
+ )
+
+ # Then, voluntarily make a reference cycle that will keep this
+ # Python object alive, which will keep the upstream iterator
+ # Babeltrace object alive.
+ self._self = self
+
+ # Finally, raise an exception to make __init__ fail.
+ raise ValueError('woops')
+
+ class MyFilter(bt2._UserFilterComponent, message_iterator_class=MyFilterIter):
+ def __init__(self, config, params, obj):
+ self._in = self._add_input_port('in')
+ self._out = self._add_output_port('out')
+
+ class MySink(bt2._UserSinkComponent):
+ def __init__(self, config, params, obj):
+ self._input_port = self._add_input_port('in')
+
+ def _user_graph_is_configured(self):
+ self._upstream_iter = self._create_input_port_message_iterator(
+ self._input_port
+ )
+
+ def _user_consume(self):
+ # We should not reach this.
+ assert False
+
+ g = bt2.Graph()
+ src = g.add_component(MySource, 'src')
+ flt = g.add_component(MyFilter, 'flt')
+ snk = g.add_component(MySink, 'snk')
+ g.connect_ports(src.output_ports['out'], flt.input_ports['in'])
+ g.connect_ports(flt.output_ports['out'], snk.input_ports['in'])
+
+ with self.assertRaisesRegex(bt2._Error, 'ValueError: woops'):
+ g.run()
+
def _setup_seek_test(
sink_cls,
user_can_seek_beginning=None,
user_seek_ns_from_origin=None,
user_can_seek_ns_from_origin=None,
+ can_seek_forward=False,
):
class MySourceIter(bt2._UserMessageIterator):
def __init__(self, config, port):
self._create_stream_end_message(stream),
]
self._at = 0
+ config.can_seek_forward = can_seek_forward
def __next__(self):
if self._at < len(self._msgs):
self._upstream_iter = self._create_input_port_message_iterator(
self._component._input_ports['in']
)
+ config.can_seek_forward = self._upstream_iter.can_seek_forward
def __next__(self):
return next(self._upstream_iter)
class UserMessageIteratorSeekBeginningTestCase(unittest.TestCase):
+ def test_can_seek_beginning_without_seek_beginning(self):
+ with self.assertRaisesRegex(
+ bt2._IncompleteUserClass,
+ "cannot create component class 'MySource': message iterator class implements _user_can_seek_beginning but not _user_seek_beginning",
+ ):
+ _setup_seek_test(SimpleSink, user_can_seek_beginning=lambda: None)
+
def test_can_seek_beginning(self):
class MySink(bt2._UserSinkComponent):
def __init__(self, config, params, obj):
return input_port_iter_can_seek_beginning
graph = _setup_seek_test(
- MySink, user_can_seek_beginning=_user_can_seek_beginning
+ MySink,
+ user_can_seek_beginning=_user_can_seek_beginning,
+ user_seek_beginning=lambda: None,
)
input_port_iter_can_seek_beginning = True
raise ValueError('moustiquaire')
graph = _setup_seek_test(
- MySink, user_can_seek_beginning=_user_can_seek_beginning
+ MySink,
+ user_can_seek_beginning=_user_can_seek_beginning,
+ user_seek_beginning=lambda: None,
)
with self.assertRaises(bt2._Error) as ctx:
return 'Amqui'
graph = _setup_seek_test(
- MySink, user_can_seek_beginning=_user_can_seek_beginning
+ MySink,
+ user_can_seek_beginning=_user_can_seek_beginning,
+ user_seek_beginning=lambda: None,
)
with self.assertRaises(bt2._Error) as ctx:
class UserMessageIteratorSeekNsFromOriginTestCase(unittest.TestCase):
- def test_can_seek_ns_from_origin(self):
- class MySink(bt2._UserSinkComponent):
- def __init__(self, config, params, obj):
- self._add_input_port('in')
-
- def _user_graph_is_configured(self):
- self._msg_iter = self._create_input_port_message_iterator(
- self._input_ports['in']
+ def test_can_seek_ns_from_origin_without_seek_ns_from_origin(self):
+ # Test the case where:
+ #
+ # - can_seek_ns_from_origin: Returns True (don't really care, as long
+ # as it's provided)
+ # - seek_ns_from_origin provided: No
+ # - can the iterator seek beginning: Don't care
+ # - can the iterator seek forward: Don't care
+ for can_seek_ns_from_origin in (False, True):
+ for iter_can_seek_beginning in (False, True):
+ for iter_can_seek_forward in (False, True):
+ with self.assertRaisesRegex(
+ bt2._IncompleteUserClass,
+ "cannot create component class 'MySource': message iterator class implements _user_can_seek_ns_from_origin but not _user_seek_ns_from_origin",
+ ):
+ self._can_seek_ns_from_origin_test(
+ None,
+ user_can_seek_ns_from_origin_ret_val=True,
+ user_seek_ns_from_origin_provided=False,
+ iter_can_seek_beginning=iter_can_seek_beginning,
+ iter_can_seek_forward=iter_can_seek_forward,
+ )
+
+ def test_can_seek_ns_from_origin_returns_true(self):
+ # Test the case where:
+ #
+ # - can_seek_ns_from_origin: returns True
+ # - seek_ns_from_origin provided: Yes
+ # - can the iterator seek beginning: Don't care
+ # - can the iterator seek forward: Don't care
+ #
+ # We expect iter.can_seek_ns_from_origin to return True.
+ for iter_can_seek_beginning in (False, True):
+ for iter_can_seek_forward in (False, True):
+ self._can_seek_ns_from_origin_test(
+ expected_outcome=True,
+ user_can_seek_ns_from_origin_ret_val=True,
+ user_seek_ns_from_origin_provided=True,
+ iter_can_seek_beginning=iter_can_seek_beginning,
+ iter_can_seek_forward=iter_can_seek_forward,
)
- def _user_consume(self):
- nonlocal can_seek_ns_from_origin
- nonlocal test_ns_from_origin
- can_seek_ns_from_origin = self._msg_iter.can_seek_ns_from_origin(
- test_ns_from_origin
+ def test_can_seek_ns_from_origin_returns_false_can_seek_beginning_forward_seekable(
+ self,
+ ):
+ # Test the case where:
+ #
+ # - can_seek_ns_from_origin: returns False
+ # - seek_ns_from_origin provided: Yes
+ # - can the iterator seek beginning: Yes
+ # - can the iterator seek forward: Yes
+ #
+ # We expect iter.can_seek_ns_from_origin to return True.
+ self._can_seek_ns_from_origin_test(
+ expected_outcome=True,
+ user_can_seek_ns_from_origin_ret_val=False,
+ user_seek_ns_from_origin_provided=True,
+ iter_can_seek_beginning=True,
+ iter_can_seek_forward=True,
+ )
+
+ def test_can_seek_ns_from_origin_returns_false_can_seek_beginning_not_forward_seekable(
+ self,
+ ):
+ # Test the case where:
+ #
+ # - can_seek_ns_from_origin: returns False
+ # - seek_ns_from_origin provided: Yes
+ # - can the iterator seek beginning: Yes
+ # - can the iterator seek forward: No
+ #
+ # We expect iter.can_seek_ns_from_origin to return False.
+ self._can_seek_ns_from_origin_test(
+ expected_outcome=False,
+ user_can_seek_ns_from_origin_ret_val=False,
+ user_seek_ns_from_origin_provided=True,
+ iter_can_seek_beginning=True,
+ iter_can_seek_forward=False,
+ )
+
+ def test_can_seek_ns_from_origin_returns_false_cant_seek_beginning_forward_seekable(
+ self,
+ ):
+ # Test the case where:
+ #
+ # - can_seek_ns_from_origin: returns False
+ # - seek_ns_from_origin provided: Yes
+ # - can the iterator seek beginning: No
+ # - can the iterator seek forward: Yes
+ #
+ # We expect iter.can_seek_ns_from_origin to return False.
+ self._can_seek_ns_from_origin_test(
+ expected_outcome=False,
+ user_can_seek_ns_from_origin_ret_val=False,
+ user_seek_ns_from_origin_provided=True,
+ iter_can_seek_beginning=False,
+ iter_can_seek_forward=True,
+ )
+
+ def test_can_seek_ns_from_origin_returns_false_cant_seek_beginning_not_forward_seekable(
+ self,
+ ):
+ # Test the case where:
+ #
+ # - can_seek_ns_from_origin: returns False
+ # - seek_ns_from_origin provided: Yes
+ # - can the iterator seek beginning: No
+ # - can the iterator seek forward: No
+ #
+ # We expect iter.can_seek_ns_from_origin to return False.
+ self._can_seek_ns_from_origin_test(
+ expected_outcome=False,
+ user_can_seek_ns_from_origin_ret_val=False,
+ user_seek_ns_from_origin_provided=True,
+ iter_can_seek_beginning=False,
+ iter_can_seek_forward=False,
+ )
+
+ def test_no_can_seek_ns_from_origin_seek_ns_from_origin(self):
+ # Test the case where:
+ #
+ # - can_seek_ns_from_origin: Not provided
+ # - seek_ns_from_origin provided: Yes
+ # - can the iterator seek beginning: Don't care
+ # - can the iterator seek forward: Don't care
+ #
+ # We expect iter.can_seek_ns_from_origin to return True.
+ for iter_can_seek_beginning in (False, True):
+ for iter_can_seek_forward in (False, True):
+ self._can_seek_ns_from_origin_test(
+ expected_outcome=True,
+ user_can_seek_ns_from_origin_ret_val=None,
+ user_seek_ns_from_origin_provided=True,
+ iter_can_seek_beginning=iter_can_seek_beginning,
+ iter_can_seek_forward=iter_can_seek_forward,
)
- def _user_can_seek_ns_from_origin(iter_self, ns_from_origin):
- nonlocal input_port_iter_can_seek_ns_from_origin
- nonlocal test_ns_from_origin
- self.assertEqual(ns_from_origin, test_ns_from_origin)
- return input_port_iter_can_seek_ns_from_origin
+ def test_no_can_seek_ns_from_origin_no_seek_ns_from_origin_can_seek_beginning_forward_seekable(
+ self,
+ ):
+ # Test the case where:
+ #
+ # - can_seek_ns_from_origin: Not provided
+ # - seek_ns_from_origin provided: Not provided
+ # - can the iterator seek beginning: Yes
+ # - can the iterator seek forward: Yes
+ #
+ # We expect iter.can_seek_ns_from_origin to return True.
+ self._can_seek_ns_from_origin_test(
+ expected_outcome=True,
+ user_can_seek_ns_from_origin_ret_val=None,
+ user_seek_ns_from_origin_provided=False,
+ iter_can_seek_beginning=True,
+ iter_can_seek_forward=True,
+ )
- graph = _setup_seek_test(
- MySink, user_can_seek_ns_from_origin=_user_can_seek_ns_from_origin
+ def test_no_can_seek_ns_from_origin_no_seek_ns_from_origin_can_seek_beginning_not_forward_seekable(
+ self,
+ ):
+ # Test the case where:
+ #
+ # - can_seek_ns_from_origin: Not provided
+ # - seek_ns_from_origin provided: Not provided
+ # - can the iterator seek beginning: Yes
+ # - can the iterator seek forward: No
+ #
+ # We expect iter.can_seek_ns_from_origin to return False.
+ self._can_seek_ns_from_origin_test(
+ expected_outcome=False,
+ user_can_seek_ns_from_origin_ret_val=None,
+ user_seek_ns_from_origin_provided=False,
+ iter_can_seek_beginning=True,
+ iter_can_seek_forward=False,
)
- input_port_iter_can_seek_ns_from_origin = True
- can_seek_ns_from_origin = None
- test_ns_from_origin = 1
- graph.run_once()
- self.assertIs(can_seek_ns_from_origin, True)
+ def test_no_can_seek_ns_from_origin_no_seek_ns_from_origin_cant_seek_beginning_forward_seekable(
+ self,
+ ):
+ # Test the case where:
+ #
+ # - can_seek_ns_from_origin: Not provided
+ # - seek_ns_from_origin provided: Not provided
+ # - can the iterator seek beginning: No
+ # - can the iterator seek forward: Yes
+ #
+ # We expect iter.can_seek_ns_from_origin to return False.
+ self._can_seek_ns_from_origin_test(
+ expected_outcome=False,
+ user_can_seek_ns_from_origin_ret_val=None,
+ user_seek_ns_from_origin_provided=False,
+ iter_can_seek_beginning=False,
+ iter_can_seek_forward=True,
+ )
- input_port_iter_can_seek_ns_from_origin = False
- can_seek_ns_from_origin = None
- test_ns_from_origin = 2
- graph.run_once()
- self.assertIs(can_seek_ns_from_origin, False)
+ def test_no_can_seek_ns_from_origin_no_seek_ns_from_origin_cant_seek_beginning_not_forward_seekable(
+ self,
+ ):
+ # Test the case where:
+ #
+ # - can_seek_ns_from_origin: Not provided
+ # - seek_ns_from_origin provided: Not provided
+ # - can the iterator seek beginning: No
+ # - can the iterator seek forward: No
+ #
+ # We expect iter.can_seek_ns_from_origin to return False.
+ self._can_seek_ns_from_origin_test(
+ expected_outcome=False,
+ user_can_seek_ns_from_origin_ret_val=None,
+ user_seek_ns_from_origin_provided=False,
+ iter_can_seek_beginning=False,
+ iter_can_seek_forward=False,
+ )
- def test_no_can_seek_ns_from_origin_with_seek_ns_from_origin(self):
- # Test an iterator without a _user_can_seek_ns_from_origin method, but
- # with a _user_seek_ns_from_origin method.
+ def _can_seek_ns_from_origin_test(
+ self,
+ expected_outcome,
+ user_can_seek_ns_from_origin_ret_val,
+ user_seek_ns_from_origin_provided,
+ iter_can_seek_beginning,
+ iter_can_seek_forward,
+ ):
class MySink(bt2._UserSinkComponent):
def __init__(self, config, params, obj):
self._add_input_port('in')
def _user_consume(self):
nonlocal can_seek_ns_from_origin
- nonlocal test_ns_from_origin
can_seek_ns_from_origin = self._msg_iter.can_seek_ns_from_origin(
- test_ns_from_origin
+ passed_ns_from_origin
)
- def _user_seek_ns_from_origin(self):
- pass
+ if user_can_seek_ns_from_origin_ret_val is not None:
- graph = _setup_seek_test(
- MySink, user_seek_ns_from_origin=_user_seek_ns_from_origin
- )
- can_seek_ns_from_origin = None
- test_ns_from_origin = 2
- graph.run_once()
- self.assertIs(can_seek_ns_from_origin, True)
+ def user_can_seek_ns_from_origin(self, ns_from_origin):
+ nonlocal received_ns_from_origin
+ received_ns_from_origin = ns_from_origin
+ return user_can_seek_ns_from_origin_ret_val
- def test_no_can_seek_ns_from_origin_with_seek_beginning(self):
- # Test an iterator without a _user_can_seek_ns_from_origin method, but
- # with a _user_seek_beginning method.
- class MySink(bt2._UserSinkComponent):
- def __init__(self, config, params, obj):
- self._add_input_port('in')
+ else:
+ user_can_seek_ns_from_origin = None
- def _user_graph_is_configured(self):
- self._msg_iter = self._create_input_port_message_iterator(
- self._input_ports['in']
- )
+ if user_seek_ns_from_origin_provided:
- def _user_consume(self):
- nonlocal can_seek_ns_from_origin
- nonlocal test_ns_from_origin
- can_seek_ns_from_origin = self._msg_iter.can_seek_ns_from_origin(
- test_ns_from_origin
- )
+ def user_seek_ns_from_origin(self, ns_from_origin):
+ pass
- def _user_seek_beginning(self):
- pass
+ else:
+ user_seek_ns_from_origin = None
- graph = _setup_seek_test(MySink, user_seek_beginning=_user_seek_beginning)
- can_seek_ns_from_origin = None
- test_ns_from_origin = 2
- graph.run_once()
- self.assertIs(can_seek_ns_from_origin, True)
+ if iter_can_seek_beginning:
- def test_no_can_seek_ns_from_origin(self):
- # Test an iterator without a _user_can_seek_ns_from_origin method
- # and no other related method.
- class MySink(bt2._UserSinkComponent):
- def __init__(self, config, params, obj):
- self._add_input_port('in')
+ def user_seek_beginning(self):
+ pass
- def _user_graph_is_configured(self):
- self._msg_iter = self._create_input_port_message_iterator(
- self._input_ports['in']
- )
+ else:
+ user_seek_beginning = None
- def _user_consume(self):
- nonlocal can_seek_ns_from_origin
- nonlocal test_ns_from_origin
- can_seek_ns_from_origin = self._msg_iter.can_seek_ns_from_origin(
- test_ns_from_origin
- )
+ graph = _setup_seek_test(
+ MySink,
+ user_can_seek_ns_from_origin=user_can_seek_ns_from_origin,
+ user_seek_ns_from_origin=user_seek_ns_from_origin,
+ user_seek_beginning=user_seek_beginning,
+ can_seek_forward=iter_can_seek_forward,
+ )
- graph = _setup_seek_test(MySink)
+ passed_ns_from_origin = 77
+ received_ns_from_origin = None
can_seek_ns_from_origin = None
- test_ns_from_origin = 2
graph.run_once()
- self.assertIs(can_seek_ns_from_origin, False)
+ self.assertIs(can_seek_ns_from_origin, expected_outcome)
+
+ if user_can_seek_ns_from_origin_ret_val is not None:
+ self.assertEqual(received_ns_from_origin, passed_ns_from_origin)
def test_can_seek_ns_from_origin_user_error(self):
class MySink(bt2._UserSinkComponent):
raise ValueError('Joutel')
graph = _setup_seek_test(
- MySink, user_can_seek_ns_from_origin=_user_can_seek_ns_from_origin
+ MySink,
+ user_can_seek_ns_from_origin=_user_can_seek_ns_from_origin,
+ user_seek_ns_from_origin=lambda: None,
)
with self.assertRaises(bt2._Error) as ctx:
return 'Nitchequon'
graph = _setup_seek_test(
- MySink, user_can_seek_ns_from_origin=_user_can_seek_ns_from_origin
+ MySink,
+ user_can_seek_ns_from_origin=_user_can_seek_ns_from_origin,
+ user_seek_ns_from_origin=lambda: None,
)
with self.assertRaises(bt2._Error) as ctx:
nonlocal actual_ns_from_origin
actual_ns_from_origin = ns_from_origin
- msg = None
graph = _setup_seek_test(
MySink, user_seek_ns_from_origin=_user_seek_ns_from_origin
)
projects / babeltrace.git / blobdiff