tests/bindings/python/bt2/test_connection.py

   1 #
   2 # Copyright (C) 2019 EfficiOS Inc.
   3 #
   4 # This program is free software; you can redistribute it and/or
   5 # modify it under the terms of the GNU General Public License
   6 # as published by the Free Software Foundation; only version 2
   7 # of the License.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program; if not, write to the Free Software
  16 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  17 #
  18
  19 import unittest
  20 import bt2
  21 from bt2 import connection as bt2_connection
  22 from bt2 import port as bt2_port
  23
  24
  25 class ConnectionTestCase(unittest.TestCase):
  26     def test_create(self):
  27         class MySource(
  28             bt2._UserSourceComponent, message_iterator_class=bt2._UserMessageIterator
  29         ):
  30             def __init__(self, config, params, obj):
  31                 self._add_output_port('out')
  32
  33         class MySink(bt2._UserSinkComponent):
  34             def __init__(self, config, params, obj):
  35                 self._add_input_port('in')
  36
  37             def _user_consume(self):
  38                 raise bt2.Stop
  39
  40         graph = bt2.Graph()
  41         src = graph.add_component(MySource, 'src')
  42         sink = graph.add_component(MySink, 'sink')
  43         conn = graph.connect_ports(src.output_ports['out'], sink.input_ports['in'])
  44         self.assertIs(type(conn), bt2_connection._ConnectionConst)
  45
  46     def test_downstream_port(self):
  47         class MySource(
  48             bt2._UserSourceComponent, message_iterator_class=bt2._UserMessageIterator
  49         ):
  50             def __init__(self, config, params, obj):
  51                 self._add_output_port('out')
  52
  53         class MySink(bt2._UserSinkComponent):
  54             def __init__(self, config, params, obj):
  55                 self._add_input_port('in')
  56
  57             def _user_consume(self):
  58                 raise bt2.Stop
  59
  60         graph = bt2.Graph()
  61         src = graph.add_component(MySource, 'src')
  62         sink = graph.add_component(MySink, 'sink')
  63         conn = graph.connect_ports(src.output_ports['out'], sink.input_ports['in'])
  64         self.assertEqual(conn.downstream_port.addr, sink.input_ports['in'].addr)
  65         self.assertIs(type(conn), bt2_connection._ConnectionConst)
  66         self.assertIs(type(conn.downstream_port), bt2_port._InputPortConst)
  67
  68     def test_upstream_port(self):
  69         class MySource(
  70             bt2._UserSourceComponent, message_iterator_class=bt2._UserMessageIterator
  71         ):
  72             def __init__(self, config, params, obj):
  73                 self._add_output_port('out')
  74
  75         class MySink(bt2._UserSinkComponent):
  76             def __init__(self, config, params, obj):
  77                 self._add_input_port('in')
  78
  79             def _user_consume(self):
  80                 raise bt2.Stop
  81
  82         graph = bt2.Graph()
  83         src = graph.add_component(MySource, 'src')
  84         sink = graph.add_component(MySink, 'sink')
  85         conn = graph.connect_ports(src.output_ports['out'], sink.input_ports['in'])
  86         self.assertEqual(conn.upstream_port.addr, src.output_ports['out'].addr)
  87         self.assertIs(type(conn.upstream_port), bt2_port._OutputPortConst)
  88
  89
  90 if __name__ == '__main__':
  91     unittest.main()