Add delay to flush the Langfuse traces (#1091)

integrations/langfuse/tests/test_tracing.py

@@ -1,4 +1,6 @@
 import os
+import random
+import time
 import pytest
 from urllib.parse import urlparse
 import requests
@@ -44,6 +46,10 @@ def test_tracing_integration(llm_class, env_var, expected_trace):
     assert "Berlin" in response["llm"]["replies"][0].content
     assert response["tracer"]["trace_url"]
 
+    # add a random delay between 1 and 3 seconds to make sure the trace is flushed
+    # and that the trace is available in Langfuse when we fetch it below
+    time.sleep(random.uniform(1, 3))
+
     url = "https://cloud.langfuse.com/api/public/traces/"
     trace_url = response["tracer"]["trace_url"]
     uuid = os.path.basename(urlparse(trace_url).path)