fix(tests): add sleep in timing tests for Windows timer resolution

Windows time.time() has ~15ms granularity. An instant mock function
gets identical start/end timestamps. Add asyncio.sleep(0.02) so
duration is always measurable.

Author: Pouyanpi

tests/test_logging.py

@@ -13,6 +13,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import asyncio
+
 import pytest
 
 from nemoguardrails.actions.llm.utils import _log_prompt, _update_token_stats
@@ -125,6 +127,7 @@ async def test_tracks_timing_and_appends_to_processing_log(self):
 
         @track_llm_call
         async def mock_llm_call():
+            await asyncio.sleep(0.02)
             return "response"
 
         result = await mock_llm_call()
@@ -168,6 +171,7 @@ async def test_increments_total_time_stat(self):
 
         @track_llm_call
         async def mock_llm_call():
+            await asyncio.sleep(0.02)
             return "response"
 
         await mock_llm_call()