anti
bf5414c0d1
Session-scoped autouse fixture in tests/ttp/conftest.py sets DECNET_DEVELOPER_TRACING=true and forces decnet.telemetry._ENABLED so the no-op tracer doesn't silently swallow emitted spans. The span_exporter fixture also monkeypatches decnet.telemetry.get_tracer so production code under test lands spans in the in-memory exporter. Tracing tests skip when DECNET_OTEL_ENDPOINT (default localhost:4317) isn't reachable so the dev loop stays green without lying about coverage.
42 lines
1.6 KiB
Python
42 lines
1.6 KiB
Python
"""Shared TTP test fixtures.
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Forces OTEL tracing ON for all tests in ``tests/ttp/``. Without this
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shim :mod:`decnet.telemetry` evaluates ``_ENABLED`` once at import
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time from the ``DECNET_DEVELOPER_TRACING`` env var; if the suite is
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invoked without that var set, every call to ``get_tracer()`` returns
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the no-op stand-in and span-emission tests (E.2.14a, future E.3
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impl tests) silently capture nothing.
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Two complementary moves:
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1. Set ``DECNET_DEVELOPER_TRACING=true`` in :func:`os.environ` before
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any tests run. Catches the case where a fresh import of
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``decnet.telemetry`` happens after collection.
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2. Mutate the already-imported ``decnet.telemetry._ENABLED`` flag to
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``True``. Catches the case where the module was already imported
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(e.g. by another test or fixture) before this conftest ran —
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reload-and-pray races are nasty enough to hardcode the override.
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Both are session-scoped and autouse — the cost of an active OTEL
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provider in unrelated tests is negligible (the SDK no-ops when no
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processor is attached).
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"""
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from __future__ import annotations
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import os
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import pytest
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@pytest.fixture(scope="session", autouse=True)
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def _enable_decnet_tracing() -> None:
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"""Force ``DECNET_DEVELOPER_TRACING=true`` for the test session.
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Set env var first (covers late imports), then poke
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``decnet.telemetry._ENABLED`` directly (covers already-imported
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case). Either alone is racy; both together is robust.
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"""
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os.environ["DECNET_DEVELOPER_TRACING"] = "true"
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import decnet.telemetry as _t # noqa: PLC0415 — fixture-time import
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_t._ENABLED = True
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