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 MyIter(bt2._UserMessageIterator):
  28             def __next__(self):
  29                 raise bt2.Stop
  30
  31         class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
  32             def __init__(self, config, params, obj):
  33                 self._add_output_port('out')
  34
  35         class MySink(bt2._UserSinkComponent):
  36             def __init__(self, config, params, obj):
  37                 self._add_input_port('in')
  38
  39             def _user_consume(self):
  40                 raise bt2.Stop
  41
  42         graph = bt2.Graph()
  43         src = graph.add_component(MySource, 'src')
  44         sink = graph.add_component(MySink, 'sink')
  45         conn = graph.connect_ports(src.output_ports['out'], sink.input_ports['in'])
  46         self.assertIs(type(conn), bt2_connection._ConnectionConst)
  47
  48     def test_downstream_port(self):
  49         class MyIter(bt2._UserMessageIterator):
  50             def __next__(self):
  51                 raise bt2.Stop
  52
  53         class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
  54             def __init__(self, config, params, obj):
  55                 self._add_output_port('out')
  56
  57         class MySink(bt2._UserSinkComponent):
  58             def __init__(self, config, params, obj):
  59                 self._add_input_port('in')
  60
  61             def _user_consume(self):
  62                 raise bt2.Stop
  63
  64         graph = bt2.Graph()
  65         src = graph.add_component(MySource, 'src')
  66         sink = graph.add_component(MySink, 'sink')
  67         conn = graph.connect_ports(src.output_ports['out'], sink.input_ports['in'])
  68         self.assertEqual(conn.downstream_port.addr, sink.input_ports['in'].addr)
  69         self.assertIs(type(conn), bt2_connection._ConnectionConst)
  70         self.assertIs(type(conn.downstream_port), bt2_port._InputPortConst)
  71
  72     def test_upstream_port(self):
  73         class MyIter(bt2._UserMessageIterator):
  74             def __next__(self):
  75                 raise bt2.Stop
  76
  77         class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
  78             def __init__(self, config, params, obj):
  79                 self._add_output_port('out')
  80
  81         class MySink(bt2._UserSinkComponent):
  82             def __init__(self, config, params, obj):
  83                 self._add_input_port('in')
  84
  85             def _user_consume(self):
  86                 raise bt2.Stop
  87
  88         graph = bt2.Graph()
  89         src = graph.add_component(MySource, 'src')
  90         sink = graph.add_component(MySink, 'sink')
  91         conn = graph.connect_ports(src.output_ports['out'], sink.input_ports['in'])
  92         self.assertEqual(conn.upstream_port.addr, src.output_ports['out'].addr)
  93         self.assertIs(type(conn.upstream_port), bt2_port._OutputPortConst)
  94
  95
  96 if __name__ == '__main__':
  97     unittest.main()