tests/bindings/python/bt2/test_connection.py

   1 # SPDX-License-Identifier: GPL-2.0-only
   2 #
   3 # Copyright (C) 2019 EfficiOS Inc.
   4 #
   5
   6 import unittest
   7
   8 import bt2
   9 from bt2 import port as bt2_port
  10 from bt2 import connection as bt2_connection
  11
  12
  13 class ConnectionTestCase(unittest.TestCase):
  14     def test_create(self):
  15         class MySource(
  16             bt2._UserSourceComponent, message_iterator_class=bt2._UserMessageIterator
  17         ):
  18             def __init__(self, config, params, obj):
  19                 self._add_output_port("out")
  20
  21         class MySink(bt2._UserSinkComponent):
  22             def __init__(self, config, params, obj):
  23                 self._add_input_port("in")
  24
  25             def _user_consume(self):
  26                 raise bt2.Stop
  27
  28         graph = bt2.Graph()
  29         src = graph.add_component(MySource, "src")
  30         sink = graph.add_component(MySink, "sink")
  31         conn = graph.connect_ports(src.output_ports["out"], sink.input_ports["in"])
  32         self.assertIs(type(conn), bt2_connection._ConnectionConst)
  33
  34     def test_downstream_port(self):
  35         class MySource(
  36             bt2._UserSourceComponent, message_iterator_class=bt2._UserMessageIterator
  37         ):
  38             def __init__(self, config, params, obj):
  39                 self._add_output_port("out")
  40
  41         class MySink(bt2._UserSinkComponent):
  42             def __init__(self, config, params, obj):
  43                 self._add_input_port("in")
  44
  45             def _user_consume(self):
  46                 raise bt2.Stop
  47
  48         graph = bt2.Graph()
  49         src = graph.add_component(MySource, "src")
  50         sink = graph.add_component(MySink, "sink")
  51         conn = graph.connect_ports(src.output_ports["out"], sink.input_ports["in"])
  52         self.assertEqual(conn.downstream_port.addr, sink.input_ports["in"].addr)
  53         self.assertIs(type(conn), bt2_connection._ConnectionConst)
  54         self.assertIs(type(conn.downstream_port), bt2_port._InputPortConst)
  55
  56     def test_upstream_port(self):
  57         class MySource(
  58             bt2._UserSourceComponent, message_iterator_class=bt2._UserMessageIterator
  59         ):
  60             def __init__(self, config, params, obj):
  61                 self._add_output_port("out")
  62
  63         class MySink(bt2._UserSinkComponent):
  64             def __init__(self, config, params, obj):
  65                 self._add_input_port("in")
  66
  67             def _user_consume(self):
  68                 raise bt2.Stop
  69
  70         graph = bt2.Graph()
  71         src = graph.add_component(MySource, "src")
  72         sink = graph.add_component(MySink, "sink")
  73         conn = graph.connect_ports(src.output_ports["out"], sink.input_ports["in"])
  74         self.assertEqual(conn.upstream_port.addr, src.output_ports["out"].addr)
  75         self.assertIs(type(conn.upstream_port), bt2_port._OutputPortConst)
  76
  77
  78 if __name__ == "__main__":
  79     unittest.main()