lib: add precond. check for begin <= end on pkt./ev. disc. msg. creation
[babeltrace.git] / tests / bindings / python / bt2 / test_component_descriptor.py
1 # SPDX-License-Identifier: GPL-2.0-only
2 #
3 # Copyright (C) 2019 EfficiOS Inc.
4 #
5
6 import unittest
7 import bt2
8
9
10 class _DummySink(bt2._UserSinkComponent):
11 def _user_consume(self):
12 pass
13
14
15 class ComponentDescriptorTestCase(unittest.TestCase):
16 def setUp(self):
17 self._obj = object()
18 self._comp_descr = bt2.ComponentDescriptor(_DummySink, {'zoom': -23}, self._obj)
19
20 def _get_comp_cls_from_plugin(self):
21 plugin = bt2.find_plugin('text', find_in_user_dir=False, find_in_sys_dir=False)
22 assert plugin is not None
23 cc = plugin.source_component_classes['dmesg']
24 assert cc is not None
25 return cc
26
27 def test_init_invalid_cls_type(self):
28 with self.assertRaises(TypeError):
29 bt2.ComponentDescriptor(int)
30
31 def test_init_invalid_params_type(self):
32 with self.assertRaises(TypeError):
33 bt2.ComponentDescriptor(_DummySink, object())
34
35 def test_init_invalid_obj_non_python_comp_cls(self):
36 cc = self._get_comp_cls_from_plugin()
37
38 with self.assertRaises(ValueError):
39 bt2.ComponentDescriptor(cc, obj=57)
40
41 def test_init_with_user_comp_cls(self):
42 bt2.ComponentDescriptor(_DummySink)
43
44 def test_init_with_gen_comp_cls(self):
45 cc = self._get_comp_cls_from_plugin()
46 bt2.ComponentDescriptor(cc)
47
48 def test_attr_component_class(self):
49 self.assertIs(self._comp_descr.component_class, _DummySink)
50
51 def test_attr_params(self):
52 self.assertEqual(self._comp_descr.params, {'zoom': -23})
53
54 def test_attr_obj(self):
55 self.assertIs(self._comp_descr.obj, self._obj)
56
57
58 if __name__ == '__main__':
59 unittest.main()
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