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
  22
  23 class ConnectionTestCase(unittest.TestCase):
  24     def test_create(self):
  25         class MyIter(bt2._UserMessageIterator):
  26             def __next__(self):
  27                 raise bt2.Stop
  28
  29         class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
  30             def __init__(self, params):
  31                 self._add_output_port('out')
  32
  33         class MySink(bt2._UserSinkComponent):
  34             def __init__(self, params):
  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
  45     def test_downstream_port(self):
  46         class MyIter(bt2._UserMessageIterator):
  47             def __next__(self):
  48                 raise bt2.Stop
  49
  50         class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
  51             def __init__(self, params):
  52                 self._add_output_port('out')
  53
  54         class MySink(bt2._UserSinkComponent):
  55             def __init__(self, params):
  56                 self._add_input_port('in')
  57
  58             def _user_consume(self):
  59                 raise bt2.Stop
  60
  61         graph = bt2.Graph()
  62         src = graph.add_component(MySource, 'src')
  63         sink = graph.add_component(MySink, 'sink')
  64         conn = graph.connect_ports(src.output_ports['out'], sink.input_ports['in'])
  65         self.assertEqual(conn.downstream_port.addr, sink.input_ports['in'].addr)
  66
  67     def test_upstream_port(self):
  68         class MyIter(bt2._UserMessageIterator):
  69             def __next__(self):
  70                 raise bt2.Stop
  71
  72         class MySource(bt2._UserSourceComponent, message_iterator_class=MyIter):
  73             def __init__(self, params):
  74                 self._add_output_port('out')
  75
  76         class MySink(bt2._UserSinkComponent):
  77             def __init__(self, params):
  78                 self._add_input_port('in')
  79
  80             def _user_consume(self):
  81                 raise bt2.Stop
  82
  83         graph = bt2.Graph()
  84         src = graph.add_component(MySource, 'src')
  85         sink = graph.add_component(MySink, 'sink')
  86         conn = graph.connect_ports(src.output_ports['out'], sink.input_ports['in'])
  87         self.assertEqual(conn.upstream_port.addr, src.output_ports['out'].addr)