from bt2 import value as bt2_value
from bt2 import trace as bt2_trace
from bt2 import stream as bt2_stream
+from bt2 import utils as bt2_utils
class TraceTestCase(unittest.TestCase):
type(trace.environment['patate']), bt2_value._SignedIntegerValueConst
)
- def test_env_iter(self):
+ def test_const_env_iter(self):
trace = utils.get_const_stream_beginning_message().stream.trace
values = set(trace.environment)
self.assertEqual(values, {'patate'})
def test_destruction_listener(self):
def on_trace_class_destruction(trace_class):
- nonlocal trace_class_destroyed
- trace_class_destroyed = True
+ nonlocal num_trace_class_destroyed_calls
+ num_trace_class_destroyed_calls += 1
def on_trace_destruction(trace):
- nonlocal trace_destroyed
- trace_destroyed = True
+ nonlocal num_trace_destroyed_calls
+ num_trace_destroyed_calls += 1
- trace_destroyed = False
- trace_class_destroyed = False
+ num_trace_class_destroyed_calls = 0
+ num_trace_destroyed_calls = 0
trace_class = get_default_trace_class()
stream_class = trace_class.create_stream_class()
stream = trace.create_stream(stream_class)
trace_class.add_destruction_listener(on_trace_class_destruction)
- trace.add_destruction_listener(on_trace_destruction)
+ td_handle1 = trace.add_destruction_listener(on_trace_destruction)
+ td_handle2 = trace.add_destruction_listener(on_trace_destruction)
+
+ self.assertIs(type(td_handle1), bt2_utils._ListenerHandle)
+
+ trace.remove_destruction_listener(td_handle2)
- self.assertFalse(trace_class_destroyed)
- self.assertFalse(trace_destroyed)
+ del td_handle1
+ del td_handle2
+
+ self.assertEqual(num_trace_class_destroyed_calls, 0)
+ self.assertEqual(num_trace_destroyed_calls, 0)
del trace
- self.assertFalse(trace_class_destroyed)
- self.assertFalse(trace_destroyed)
+ self.assertEqual(num_trace_class_destroyed_calls, 0)
+ self.assertEqual(num_trace_destroyed_calls, 0)
del stream
- self.assertFalse(trace_class_destroyed)
- self.assertTrue(trace_destroyed)
+ self.assertEqual(num_trace_class_destroyed_calls, 0)
+ self.assertEqual(num_trace_destroyed_calls, 1)
del trace_class
- self.assertFalse(trace_class_destroyed)
- self.assertTrue(trace_destroyed)
+ self.assertEqual(num_trace_class_destroyed_calls, 0)
+ self.assertEqual(num_trace_destroyed_calls, 1)
del stream_class
- self.assertTrue(trace_class_destroyed)
- self.assertTrue(trace_destroyed)
+ self.assertEqual(num_trace_class_destroyed_calls, 1)
+ self.assertEqual(num_trace_destroyed_calls, 1)
+
+ def test_remove_destruction_listener_wrong_type(self):
+ trace_class = get_default_trace_class()
+ trace = trace_class()
+
+ with self.assertRaisesRegex(
+ TypeError, r"'int' is not a '<class 'bt2.utils._ListenerHandle'>' object"
+ ):
+ trace.remove_destruction_listener(123)
+
+ def test_remove_destruction_listener_wrong_object(self):
+ def on_trace_destruction(trace):
+ pass
+
+ trace_class_1 = get_default_trace_class()
+ trace1 = trace_class_1()
+ trace_class_2 = get_default_trace_class()
+ trace2 = trace_class_2()
+
+ handle1 = trace1.add_destruction_listener(on_trace_destruction)
+
+ with self.assertRaisesRegex(
+ ValueError,
+ r'This trace destruction listener does not match the trace object\.',
+ ):
+ trace2.remove_destruction_listener(handle1)
+
+ def test_remove_destruction_listener_twice(self):
+ def on_trace_destruction(trace_class):
+ pass
+
+ trace_class = get_default_trace_class()
+ trace = trace_class()
+ handle = trace.add_destruction_listener(on_trace_destruction)
+
+ trace.remove_destruction_listener(handle)
+
+ with self.assertRaisesRegex(
+ ValueError, r'This trace destruction listener was already removed\.'
+ ):
+ trace.remove_destruction_listener(handle)
+
+ def test_raise_in_destruction_listener(self):
+ def on_trace_destruction(trace):
+ raise ValueError('it hurts')
+
+ trace_class = get_default_trace_class()
+ trace = trace_class()
+ trace.add_destruction_listener(on_trace_destruction)
+
+ del trace
if __name__ == '__main__':