71 lines
2.8 KiB
Python
71 lines
2.8 KiB
Python
"""S5.2 — Varsling: unit/contract tests for ``notify.py`` (Notifier protocol + notifiers).
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Detach-seam (RED-when-detached) twins live in ``tests/test_notify_loadbearing.py``. Tests may
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import MAF-tainted modules freely (``verdicts``) — only ``notify.py`` itself must stay MAF-free.
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"""
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from __future__ import annotations
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import io
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import json
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from portfolio_optimiser.notify import ConsoleNotifier, FileNotifier, Notifier, _verdict_payload
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from portfolio_optimiser.verdicts import ProposalFeatures, Verdict, capture_verdict, verdict_to_dict
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def _verdict() -> Verdict:
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return capture_verdict(
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ProposalFeatures(
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affected_codes=frozenset({"05.2", "03.1"}),
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measure_type="scope_reduction",
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claimed_saving_nok=200_000.0,
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description="LED retrofit",
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),
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"approved",
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"feasible within range",
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)
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def test_plain_callable_satisfies_notifier() -> None:
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"""The seam promise: any plain callable satisfies the runtime-checkable ``Notifier`` protocol,
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so ``run_project(notify=lambda v: ...)`` stays valid — a structural superset of
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``Callable[[Verdict], None]``, not a new ABC (needs ``@runtime_checkable``)."""
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assert isinstance(lambda v: None, Notifier)
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def test_console_emits_id_and_decision() -> None:
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"""ConsoleNotifier writes the verdict id + decision to the injected stream (never a URL)."""
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stream = io.StringIO()
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verdict = _verdict()
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ConsoleNotifier(stream=stream)(verdict)
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out = stream.getvalue()
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assert verdict.id in out
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assert verdict.decision in out
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def test_payload_matches_verdict_to_dict_oracle() -> None:
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"""DRIFT-ORACLE: the duck-typed ``_verdict_payload`` reproduces ``verdict_to_dict``'s exact
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NESTED shape (verdicts.py:124-139) without importing it at runtime — the test imports both
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(tests may pull MAF freely) and pins them equal, so a ``Verdict`` shape change goes RED here
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instead of silently diverging the notified payload."""
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verdict = _verdict()
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assert _verdict_payload(verdict) == verdict_to_dict(verdict)
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def test_file_notifier_byte_deterministic(tmp_path) -> None:
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"""FileNotifier appends one JSONL line per verdict — two writes of the same verdict are
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byte-identical, LF-terminated, nested per the oracle shape, and carry no wall-clock key."""
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path = tmp_path / "sub" / "notify.jsonl"
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verdict = _verdict()
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notifier = FileNotifier(str(path))
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notifier(verdict)
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first = path.read_bytes()
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notifier(verdict)
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second = path.read_bytes()
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assert second == first * 2 # identical appended line bytes
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line = first.decode("utf-8")
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assert line.endswith("\n")
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payload = json.loads(line)
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assert payload["id"] == verdict.id
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assert payload["proposal_features"]["affected_codes"] == ["03.1", "05.2"]
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assert not any(k in payload for k in ("date", "timestamp", "created", "ts"))
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