Move to kernel style SPDX license identifiers

[babeltrace.git] / tests / bindings / python / bt2 / test_trace_class.py

diff --git a/tests/bindings/python/bt2/test_trace_class.py b/tests/bindings/python/bt2/test_trace_class.py
index 2acb7fbe54509ca58db0d5cdc78cb1d539d50bce..67f6456b7f894c87e4291b021c0e2125894d03c4 100644 (file)
--- a/tests/bindings/python/bt2/test_trace_class.py
+++ b/tests/bindings/python/bt2/test_trace_class.py
@@ -1,20 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2019 EfficiOS Inc.
 #
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; only version 2
-# of the License.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
-#
 
 import unittest
 from utils import (
@@ -24,6 +11,7 @@ from utils import (
 )
 from bt2 import stream_class as bt2_stream_class
 from bt2 import trace_class as bt2_trace_class
+from bt2 import utils as bt2_utils
 
 
 class TraceClassTestCase(unittest.TestCase):
@@ -68,6 +56,14 @@ class TraceClassTestCase(unittest.TestCase):
 
         self.assertRaisesInComponentInit(TypeError, f)
 
+    def test_create_invalid_automatic_stream_class_id_type(self):
+        def f(comp_self):
+            return comp_self._create_trace_class(
+                assigns_automatic_stream_class_id='perchaude'
+            )
+
+        self.assertRaisesInComponentInit(TypeError, f)
+
     def test_automatic_stream_class_id(self):
         def f(comp_self):
             return comp_self._create_trace_class(assigns_automatic_stream_class_id=True)
@@ -175,19 +171,71 @@ class TraceClassTestCase(unittest.TestCase):
 
     def test_destruction_listener(self):
         def on_trace_class_destruction(trace_class):
-            nonlocal trace_class_destroyed
-            trace_class_destroyed = True
+            nonlocal num_destruct_calls
+            num_destruct_calls += 1
 
-        trace_class_destroyed = False
+        num_destruct_calls = 0
 
         trace_class = get_default_trace_class()
-        trace_class.add_destruction_listener(on_trace_class_destruction)
 
-        self.assertFalse(trace_class_destroyed)
+        handle1 = trace_class.add_destruction_listener(on_trace_class_destruction)
+        self.assertIs(type(handle1), bt2_utils._ListenerHandle)
+
+        handle2 = trace_class.add_destruction_listener(on_trace_class_destruction)
+
+        trace_class.remove_destruction_listener(handle2)
+
+        self.assertEqual(num_destruct_calls, 0)
 
         del trace_class
 
-        self.assertTrue(trace_class_destroyed)
+        self.assertEqual(num_destruct_calls, 1)
+
+    def test_remove_destruction_listener_wrong_type(self):
+        trace_class = get_default_trace_class()
+
+        with self.assertRaisesRegex(
+            TypeError, r"'int' is not a '<class 'bt2.utils._ListenerHandle'>' object"
+        ):
+            trace_class.remove_destruction_listener(123)
+
+    def test_remove_destruction_listener_wrong_object(self):
+        def on_trace_class_destruction(trace_class):
+            pass
+
+        trace_class_1 = get_default_trace_class()
+        trace_class_2 = get_default_trace_class()
+
+        handle1 = trace_class_1.add_destruction_listener(on_trace_class_destruction)
+
+        with self.assertRaisesRegex(
+            ValueError,
+            r'This trace class destruction listener does not match the trace class object\.',
+        ):
+            trace_class_2.remove_destruction_listener(handle1)
+
+    def test_remove_destruction_listener_twice(self):
+        def on_trace_class_destruction(trace_class):
+            pass
+
+        trace_class = get_default_trace_class()
+        handle = trace_class.add_destruction_listener(on_trace_class_destruction)
+
+        trace_class.remove_destruction_listener(handle)
+
+        with self.assertRaisesRegex(
+            ValueError, r'This trace class destruction listener was already removed\.'
+        ):
+            trace_class.remove_destruction_listener(handle)
+
+    def test_raise_in_destruction_listener(self):
+        def on_trace_class_destruction(trace_class):
+            raise ValueError('it hurts')
+
+        trace_class = get_default_trace_class()
+        trace_class.add_destruction_listener(on_trace_class_destruction)
+
+        del trace_class
 
 
 if __name__ == '__main__':