- test_obj = self
- graph = bt2.Graph()
- src = graph.add_component(MySource, 'src')
- msg_iter = graph.create_output_port_message_iterator(src.output_ports['out'])
-
- for at, msg in enumerate(msg_iter):
- if at == 0:
- self.assertIsInstance(msg, bt2.message._StreamBeginningMessage)
- elif at == 1:
- self.assertIsInstance(msg, bt2.message._PacketBeginningMessage)
- elif at == 5:
- self.assertIsInstance(msg, bt2.message._PacketEndMessage)
- elif at == 6:
- self.assertIsInstance(msg, bt2.message._StreamEndMessage)
- else:
- self.assertIsInstance(msg, bt2.message._EventMessage)
- self.assertEqual(msg.event.cls.name, 'salut')
- field = msg.event.payload_field['my_int']
- self.assertEqual(field, at * 3)
+ 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)
+
+ 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_graph_is_configured(self):
+ self._msg_iter = self._create_input_port_message_iterator(
+ self._input_ports['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
+ )
+
+ graph = _setup_seek_test(MySink)
+ can_seek_ns_from_origin = None
+ test_ns_from_origin = 2
+ graph.run_once()
+ self.assertIs(can_seek_ns_from_origin, False)
+
+ 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_input_port_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
+ )
+
+ 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_input_port_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
+ )
+
+ 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_input_port_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
+
+ msg = None
+ 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)