events: test Event name precedence in attributes (open-telemetry#4142)

Author: xrmx

opentelemetry-api/tests/events/test_event.py

@@ -11,3 +11,11 @@ def test_event(self):
         self.assertEqual(
             event.attributes, {"key": "value", "event.name": "example"}
         )
+
+    def test_event_name_copied_in_attributes(self):
+        event = Event("name", 123)
+        self.assertEqual(event.attributes, {"event.name": "name"})
+
+    def test_event_name_has_precedence_over_attributes(self):
+        event = Event("name", 123, attributes={"event.name": "attr value"})
+        self.assertEqual(event.attributes, {"event.name": "name"})