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