+# SPDX-License-Identifier: GPL-2.0-only
#
# Copyright (C) 2019 EfficiOS Inc.
#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; only version 2
-# of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-#
import unittest
import bt2
import sys
from utils import TestOutputPortMessageIterator
from bt2 import port as bt2_port
+from bt2 import message_iterator as bt2_message_iterator
class SimpleSink(bt2._UserSinkComponent):
# Straightforward sink that creates one input port (`in`) and consumes from
# it.
- def __init__(self, params, obj):
+ def __init__(self, config, params, obj):
self._add_input_port('in')
def _user_consume(self):
next(self._msg_iter)
def _user_graph_is_configured(self):
- self._msg_iter = self._create_input_port_message_iterator(
- self._input_ports['in']
- )
+ self._msg_iter = self._create_message_iterator(self._input_ports['in'])
def _create_graph(src_comp_cls, sink_comp_cls, flt_comp_cls=None):
the_output_port_from_iter = None
class MyIter(bt2._UserMessageIterator):
- def __init__(self, self_port_output):
+ def __init__(self, config, self_port_output):
nonlocal initialized
nonlocal the_output_port_from_iter
initialized = True
the_output_port_from_iter = self_port_output
class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
- def __init__(self, params, obj):
+ def __init__(self, config, params, obj):
nonlocal the_output_port_from_source
the_output_port_from_source = self._add_output_port('out', 'user data')
def test_create_from_message_iterator(self):
class MySourceIter(bt2._UserMessageIterator):
- def __init__(self, self_port_output):
+ def __init__(self, config, self_port_output):
nonlocal src_iter_initialized
src_iter_initialized = True
class MySource(bt2._UserSourceComponent, message_iterator_class=MySourceIter):
- def __init__(self, params, obj):
+ def __init__(self, config, params, obj):
self._add_output_port('out')
class MyFilterIter(bt2._UserMessageIterator):
- def __init__(self, self_port_output):
+ def __init__(self, config, self_port_output):
nonlocal flt_iter_initialized
flt_iter_initialized = True
- self._up_iter = self._create_input_port_message_iterator(
+ self._up_iter = self._create_message_iterator(
self._component._input_ports['in']
)
return next(self._up_iter)
class MyFilter(bt2._UserFilterComponent, message_iterator_class=MyFilterIter):
- def __init__(self, params, obj):
+ def __init__(self, config, params, obj):
self._add_input_port('in')
self._add_output_port('out')
def test_create_user_error(self):
# This tests both error handling by
- # _UserSinkComponent._create_input_port_message_iterator
- # and _UserMessageIterator._create_input_port_message_iterator, as they
+ # _UserSinkComponent._create_message_iterator
+ # and _UserMessageIterator._create_message_iterator, as they
# are both used in the graph.
class MySourceIter(bt2._UserMessageIterator):
- def __init__(self, self_port_output):
+ def __init__(self, config, self_port_output):
raise ValueError('Very bad error')
class MySource(bt2._UserSourceComponent, message_iterator_class=MySourceIter):
- def __init__(self, params, obj):
+ def __init__(self, config, params, obj):
self._add_output_port('out')
class MyFilterIter(bt2._UserMessageIterator):
- def __init__(self, self_port_output):
+ def __init__(self, config, self_port_output):
# This is expected to raise because of the error in
# MySourceIter.__init__.
- self._create_input_port_message_iterator(
- self._component._input_ports['in']
- )
+ self._create_message_iterator(self._component._input_ports['in'])
class MyFilter(bt2._UserFilterComponent, message_iterator_class=MyFilterIter):
- def __init__(self, params, obj):
+ def __init__(self, config, params, obj):
self._add_input_port('in')
self._add_output_port('out')
finalized = True
class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
- def __init__(self, params, obj):
+ def __init__(self, config, params, obj):
self._add_output_port('out')
finalized = False
del graph
self.assertTrue(finalized)
+ def test_config_parameter(self):
+ class MyIter(bt2._UserMessageIterator):
+ def __init__(self, config, port):
+ nonlocal config_type
+ config_type = type(config)
+
+ class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
+ def __init__(self, config, params, obj):
+ self._add_output_port('out')
+
+ config_type = None
+ graph = _create_graph(MySource, SimpleSink)
+ graph.run()
+ self.assertIs(config_type, bt2_message_iterator._MessageIteratorConfiguration)
+
+ def _test_config_can_seek_forward(self, set_can_seek_forward):
+ class MyIter(bt2._UserMessageIterator):
+ def __init__(self, config, port):
+ if set_can_seek_forward:
+ config.can_seek_forward = True
+
+ class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
+ def __init__(self, config, params, obj):
+ self._add_output_port('out')
+
+ 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_message_iterator(self._input_ports['in'])
+
+ def _user_consume(self):
+ nonlocal can_seek_forward
+ can_seek_forward = self._msg_iter.can_seek_forward
+
+ can_seek_forward = None
+ graph = _create_graph(MySource, MySink)
+ graph.run_once()
+ self.assertIs(can_seek_forward, set_can_seek_forward)
+
+ def test_config_can_seek_forward_default(self):
+ self._test_config_can_seek_forward(False)
+
+ def test_config_can_seek_forward(self):
+ self._test_config_can_seek_forward(True)
+
+ def test_config_can_seek_forward_wrong_type(self):
+ class MyIter(bt2._UserMessageIterator):
+ def __init__(self, config, port):
+ config.can_seek_forward = 1
+
+ class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
+ def __init__(self, config, params, obj):
+ self._add_output_port('out')
+
+ graph = _create_graph(MySource, SimpleSink)
+ with self.assertRaises(bt2._Error) as ctx:
+ graph.run()
+
+ root_cause = ctx.exception[0]
+ self.assertIn("TypeError: 'int' is not a 'bool' object", root_cause.message)
+
def test_component(self):
class MyIter(bt2._UserMessageIterator):
- def __init__(self, self_port_output):
+ def __init__(self, config, self_port_output):
nonlocal salut
salut = self._component._salut
class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
- def __init__(self, params, obj):
+ def __init__(self, config, params, obj):
self._add_output_port('out')
self._salut = 23
def test_port(self):
class MyIter(bt2._UserMessageIterator):
- def __init__(self_iter, self_port_output):
+ def __init__(self_iter, config, self_port_output):
nonlocal called
called = True
port = self_iter._port
self.assertEqual(self_port_output.addr, port.addr)
class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
- def __init__(self, params, obj):
+ def __init__(self, config, params, obj):
self._add_output_port('out')
called = False
def test_addr(self):
class MyIter(bt2._UserMessageIterator):
- def __init__(self, self_port_output):
+ def __init__(self, config, self_port_output):
nonlocal addr
addr = self.addr
class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
- def __init__(self, params, obj):
+ def __init__(self, config, params, obj):
self._add_output_port('out')
addr = None
# and can be re-used.
def test_reuse_message(self):
class MyIter(bt2._UserMessageIterator):
- def __init__(self, port):
+ def __init__(self, config, port):
tc, sc, ec = port.user_data
trace = tc()
stream = trace.create_stream(sc)
return self._msgs.pop(0)
class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
- def __init__(self, params, obj):
+ def __init__(self, config, params, obj):
tc = self._create_trace_class()
sc = tc.create_stream_class(supports_packets=True)
ec = sc.create_event_class()
raise bt2.TryAgain
class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
- def __init__(self, params, obj):
+ def __init__(self, config, params, obj):
self._add_output_port('out')
class MyFilterIter(bt2._UserMessageIterator):
def __init__(self, port):
input_port = port.user_data
- self._upstream_iter = self._create_input_port_message_iterator(
- input_port
- )
+ self._upstream_iter = self._create_message_iterator(input_port)
def __next__(self):
return next(self._upstream_iter)
def _user_seek_beginning(self):
self._upstream_iter.seek_beginning()
- @property
def _user_can_seek_beginning(self):
- return self._upstream_iter.can_seek_beginning
+ return self._upstream_iter.can_seek_beginning()
class MyFilter(bt2._UserFilterComponent, message_iterator_class=MyFilterIter):
- def __init__(self, params, obj):
+ def __init__(self, config, params, obj):
input_port = self._add_input_port('in')
self._add_output_port('out', input_port)
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')
-def _setup_seek_test(sink_cls, user_seek_beginning=None, user_can_seek_beginning=None):
+ class MyFilterIter(bt2._UserMessageIterator):
+ def __init__(self, config, port):
+ # First, create an upstream iterator.
+ self._upstream_iter = self._create_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_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_seek_beginning=None,
+ 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, port):
+ def __init__(self, config, port):
tc, sc, ec = port.user_data
trace = tc()
stream = trace.create_stream(sc)
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):
MySourceIter._user_seek_beginning = user_seek_beginning
if user_can_seek_beginning is not None:
- MySourceIter._user_can_seek_beginning = property(user_can_seek_beginning)
+ MySourceIter._user_can_seek_beginning = user_can_seek_beginning
+
+ if user_seek_ns_from_origin is not None:
+ MySourceIter._user_seek_ns_from_origin = user_seek_ns_from_origin
+
+ if user_can_seek_ns_from_origin is not None:
+ MySourceIter._user_can_seek_ns_from_origin = user_can_seek_ns_from_origin
class MySource(bt2._UserSourceComponent, message_iterator_class=MySourceIter):
- def __init__(self, params, obj):
+ def __init__(self, config, params, obj):
tc = self._create_trace_class()
sc = tc.create_stream_class(supports_packets=True)
ec = sc.create_event_class()
self._add_output_port('out', (tc, sc, ec))
class MyFilterIter(bt2._UserMessageIterator):
- def __init__(self, port):
- self._upstream_iter = self._create_input_port_message_iterator(
+ def __init__(self, config, port):
+ self._upstream_iter = self._create_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)
- @property
def _user_can_seek_beginning(self):
- return self._upstream_iter.can_seek_beginning
+ return self._upstream_iter.can_seek_beginning()
def _user_seek_beginning(self):
self._upstream_iter.seek_beginning()
+ def _user_can_seek_ns_from_origin(self, ns_from_origin):
+ return self._upstream_iter.can_seek_ns_from_origin(ns_from_origin)
+
+ def _user_seek_ns_from_origin(self, ns_from_origin):
+ self._upstream_iter.seek_ns_from_origin(ns_from_origin)
+
class MyFilter(bt2._UserFilterComponent, message_iterator_class=MyFilterIter):
- def __init__(self, params, obj):
+ def __init__(self, config, params, obj):
self._add_input_port('in')
self._add_output_port('out')
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, params, obj):
+ 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']
- )
+ self._msg_iter = self._create_message_iterator(self._input_ports['in'])
def _user_consume(self):
nonlocal can_seek_beginning
- can_seek_beginning = self._msg_iter.can_seek_beginning
+ can_seek_beginning = self._msg_iter.can_seek_beginning()
def _user_can_seek_beginning(self):
nonlocal input_port_iter_can_seek_beginning
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
can_seek_beginning = None
graph.run_once()
- self.assertTrue(can_seek_beginning)
+ self.assertIs(can_seek_beginning, True)
input_port_iter_can_seek_beginning = False
can_seek_beginning = None
graph.run_once()
- self.assertFalse(can_seek_beginning)
+ self.assertIs(can_seek_beginning, False)
def test_no_can_seek_beginning_with_seek_beginning(self):
# Test an iterator without a _user_can_seek_beginning method, but with
# a _user_seek_beginning method.
class MySink(bt2._UserSinkComponent):
- def __init__(self, params, obj):
+ 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']
- )
+ self._msg_iter = self._create_message_iterator(self._input_ports['in'])
def _user_consume(self):
nonlocal can_seek_beginning
- can_seek_beginning = self._msg_iter.can_seek_beginning
+ can_seek_beginning = self._msg_iter.can_seek_beginning()
def _user_seek_beginning(self):
pass
graph = _setup_seek_test(MySink, user_seek_beginning=_user_seek_beginning)
can_seek_beginning = None
graph.run_once()
- self.assertTrue(can_seek_beginning)
+ self.assertIs(can_seek_beginning, True)
def test_no_can_seek_beginning(self):
# Test an iterator without a _user_can_seek_beginning method, without
# a _user_seek_beginning method.
class MySink(bt2._UserSinkComponent):
- def __init__(self, params, obj):
+ 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']
- )
+ self._msg_iter = self._create_message_iterator(self._input_ports['in'])
def _user_consume(self):
nonlocal can_seek_beginning
- can_seek_beginning = self._msg_iter.can_seek_beginning
+ can_seek_beginning = self._msg_iter.can_seek_beginning()
graph = _setup_seek_test(MySink)
can_seek_beginning = None
graph.run_once()
- self.assertFalse(can_seek_beginning)
+ self.assertIs(can_seek_beginning, False)
+
+ def test_can_seek_beginning_user_error(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_message_iterator(self._input_ports['in'])
+
+ def _user_consume(self):
+ # This is expected to raise.
+ self._msg_iter.can_seek_beginning()
+
+ def _user_can_seek_beginning(self):
+ raise ValueError('moustiquaire')
+
+ graph = _setup_seek_test(
+ MySink,
+ user_can_seek_beginning=_user_can_seek_beginning,
+ user_seek_beginning=lambda: None,
+ )
+
+ with self.assertRaises(bt2._Error) as ctx:
+ graph.run_once()
+
+ cause = ctx.exception[0]
+ self.assertIn('ValueError: moustiquaire', cause.message)
+
+ def test_can_seek_beginning_wrong_return_value(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_message_iterator(self._input_ports['in'])
+
+ def _user_consume(self):
+ # This is expected to raise.
+ self._msg_iter.can_seek_beginning()
+
+ def _user_can_seek_beginning(self):
+ return 'Amqui'
+
+ graph = _setup_seek_test(
+ MySink,
+ user_can_seek_beginning=_user_can_seek_beginning,
+ user_seek_beginning=lambda: None,
+ )
+
+ with self.assertRaises(bt2._Error) as ctx:
+ graph.run_once()
+
+ cause = ctx.exception[0]
+ self.assertIn("TypeError: 'str' is not a 'bool' object", cause.message)
def test_seek_beginning(self):
class MySink(bt2._UserSinkComponent):
- def __init__(self, params, obj):
+ 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']
- )
+ self._msg_iter = self._create_message_iterator(self._input_ports['in'])
def _user_consume(self):
nonlocal do_seek_beginning
def test_seek_beginning_user_error(self):
class MySink(bt2._UserSinkComponent):
- def __init__(self, params, obj):
+ 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']
- )
+ self._msg_iter = self._create_message_iterator(self._input_ports['in'])
def _user_consume(self):
self._msg_iter.seek_beginning()
graph.run_once()
+class UserMessageIteratorSeekNsFromOriginTestCase(unittest.TestCase):
+ 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 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 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,
+ )
+
+ 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,
+ )
+
+ 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,
+ )
+
+ 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 _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_graph_is_configured(self):
+ self._msg_iter = self._create_message_iterator(self._input_ports['in'])
+
+ def _user_consume(self):
+ nonlocal can_seek_ns_from_origin
+ can_seek_ns_from_origin = self._msg_iter.can_seek_ns_from_origin(
+ passed_ns_from_origin
+ )
+
+ if user_can_seek_ns_from_origin_ret_val is not None:
+
+ 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
+
+ else:
+ user_can_seek_ns_from_origin = None
+
+ if user_seek_ns_from_origin_provided:
+
+ def user_seek_ns_from_origin(self, ns_from_origin):
+ pass
+
+ else:
+ user_seek_ns_from_origin = None
+
+ if iter_can_seek_beginning:
+
+ def user_seek_beginning(self):
+ pass
+
+ else:
+ user_seek_beginning = None
+
+ 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,
+ )
+
+ passed_ns_from_origin = 77
+ received_ns_from_origin = None
+ can_seek_ns_from_origin = None
+ graph.run_once()
+ 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):
+ def __init__(self, config, params, obj):
+ self._add_input_port('in')
+
+ def _user_graph_is_configured(self):
+ self._msg_iter = self._create_message_iterator(self._input_ports['in'])
+
+ def _user_consume(self):
+ # This is expected to raise.
+ self._msg_iter.can_seek_ns_from_origin(2)
+
+ def _user_can_seek_ns_from_origin(self, ns_from_origin):
+ raise ValueError('Joutel')
+
+ graph = _setup_seek_test(
+ 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:
+ graph.run_once()
+
+ cause = ctx.exception[0]
+ self.assertIn('ValueError: Joutel', cause.message)
+
+ def test_can_seek_ns_from_origin_wrong_return_value(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_message_iterator(self._input_ports['in'])
+
+ def _user_consume(self):
+ # This is expected to raise.
+ self._msg_iter.can_seek_ns_from_origin(2)
+
+ def _user_can_seek_ns_from_origin(self, ns_from_origin):
+ return 'Nitchequon'
+
+ graph = _setup_seek_test(
+ 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:
+ graph.run_once()
+
+ cause = ctx.exception[0]
+ self.assertIn("TypeError: 'str' is not a 'bool' object", cause.message)
+
+ def test_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_message_iterator(self._input_ports['in'])
+
+ def _user_consume(self):
+ self._msg_iter.seek_ns_from_origin(17)
+
+ def _user_seek_ns_from_origin(self, ns_from_origin):
+ nonlocal actual_ns_from_origin
+ actual_ns_from_origin = ns_from_origin
+
+ graph = _setup_seek_test(
+ MySink, user_seek_ns_from_origin=_user_seek_ns_from_origin
+ )
+
+ actual_ns_from_origin = None
+ graph.run_once()
+ self.assertEqual(actual_ns_from_origin, 17)
+
+
if __name__ == '__main__':
unittest.main()
projects / babeltrace.git / blobdiff