add callback attr name test

Author: nozik

instrumentation/opentelemetry-instrumentation-pika/tests/test_pika_instrumentation.py

@@ -18,6 +18,7 @@
 from wrapt import BoundFunctionWrapper
 
 from opentelemetry.instrumentation.pika import PikaInstrumentor
+from opentelemetry.instrumentation.pika.pika_instrumentor import _consumer_callback_attribute_name
 from opentelemetry.instrumentation.pika.utils import dummy_callback
 from opentelemetry.trace import Tracer
 
@@ -113,3 +114,9 @@ def test_uninstrument_channel_functions(self) -> None:
         self.channel.basic_publish._original_function = original_function
         PikaInstrumentor._uninstrument_channel_functions(self.channel)
         self.assertEqual(self.channel.basic_publish, original_function)
+
+    def test_consumer_callback_attribute_name(self) -> None:
+        with mock.patch("pika.__version__", "1.0.0"):
+            assert _consumer_callback_attribute_name() == "on_message_callback"
+        with mock.patch("pika.__version__", "0.12.0"):
+            assert _consumer_callback_attribute_name() == "consumer_cb"