phase 8

tests/detect/test_tracing.py

@@ -0,0 +1,34 @@
+"""Tests for Langfuse tracing — works without Langfuse configured (no-op mode)."""
+
+import pytest
+
+from detect.tracing import trace_node, SpanContext, flush
+
+
+def test_trace_node_noop():
+    """Without LANGFUSE_SECRET_KEY, tracing is a no-op but doesn't error."""
+    state = {"job_id": "test-job", "profile_name": "soccer_broadcast"}
+
+    with trace_node(state, "extract_frames") as span:
+        assert isinstance(span, SpanContext)
+        span.set_output({"frames": 42})
+
+    assert span.metadata["frames"] == 42
+    assert span.metadata["status"] == "ok"
+    assert "duration_seconds" in span.metadata
+
+
+def test_trace_node_error():
+    """Span records error status on exception."""
+    state = {"job_id": "test-job"}
+
+    with pytest.raises(ValueError):
+        with trace_node(state, "bad_node") as span:
+            raise ValueError("boom")
+
+    assert span.metadata["status"] == "error"
+
+
+def test_flush_noop():
+    """Flush works when Langfuse is not configured."""
+    flush()