DEBUGGING.

Author: purple4reina

tests/test_temp_linkage_probe.py

@@ -0,0 +1,19 @@
+# AIDEV-TODO: TEMPORARY linkage probe — REVERT (delete this file) before merging this PR.
+# Validates that `scripts/setup_python_env.sh` actually swaps the released
+# ddtrace for the PR-built wheel when triggered from dd-trace-py CI.
+#   - In lambda-python's own PR/main CI: UPSTREAM_PIPELINE_ID is unset, the
+#     setup script's override step is skipped, ddtrace stays on the released
+#     tag, this test PASSES.
+#   - When triggered from a dd-trace-py PR: UPSTREAM_PIPELINE_ID is set, the
+#     setup script installs the dev-suffixed PR wheel, this test FAILS,
+#     proving the linkage works.
+import re
+
+import ddtrace
+
+
+def test_ddtrace_is_released_version():
+    assert re.fullmatch(r"\d+\.\d+\.\d+(rc\d+)?", ddtrace.__version__), (
+        f"ddtrace.__version__={ddtrace.__version__!r} is not a released-tag "
+        "shape — looks like an upstream PR wheel. Linkage works."
+    )