"""Test environment customization.

Disables ddtrace tracer (if present) to prevent background worker
threads from causing abort errors at interpreter shutdown during
pytest runs. This has no effect if ddtrace is not installed.
"""
import os

# Explicitly disable ddtrace auto instrumentation if loaded.
os.environ.setdefault("DD_TRACE_ENABLED", "false")

try:  # pragma: no cover - defensive
    import ddtrace  # type: ignore
    try:
        ddtrace.tracer.enabled = False  # type: ignore[attr-defined]
    except Exception:
        pass
except Exception:
    pass