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