torben
0b8ca746fa
Files changed: - AGENTS.md - CHANGES.md - VERSION - instructions/kb-profiles.md - kb/CONVENTIONS.md - kb/concepts/COLLECTION.md - tools/CONTRACT.md - tools/chemenu/commands/confidence_decay.py - tools/chemenu/commands/dist_cmd.py - tools/chemenu/tests/test_confidence_decay.py - tools/chemenu/tests/test_dist_cmd.py
90 lines
3.5 KiB
Python
90 lines
3.5 KiB
Python
import datetime
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import pytest
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from chemenu import config
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from chemenu.commands import confidence_decay
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from chemenu.commands.confidence_decay import FLOOR, compute_decay
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from chemenu.frontmatter_io import read_page, write_page
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def test_no_decay_at_zero_months():
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today = datetime.date(2026, 8, 2)
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assert compute_decay(0.9, today, today) == 0.9
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def test_decay_after_ten_months():
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today = datetime.date(2026, 8, 2)
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last_confirmed = datetime.date(2025, 10, 2) # ~10 months earlier
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result = compute_decay(0.9, last_confirmed, today)
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# 0.9 * (1 - 0.01 * ~10) ~= 0.9 * 0.90 = 0.81
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assert 0.80 <= result <= 0.82
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def test_decay_floors_at_0_2():
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today = datetime.date(2026, 8, 2)
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long_ago = datetime.date(2015, 1, 1)
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result = compute_decay(0.5, long_ago, today)
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assert result == FLOOR
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@pytest.fixture
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def decay_wiki(kb_dir, monkeypatch):
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monkeypatch.setattr(config, "KB_DIR", kb_dir)
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return kb_dir
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def test_init_base_backfills_from_current_confidence(decay_wiki):
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confidence_decay.confidence_init_base(apply=True)
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frontmatter, _ = read_page(decay_wiki / "entities/systems/aurora.md")
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assert frontmatter["confidence_base"] == 0.9
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# Written next to `confidence`, keeping the schema's field order.
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keys = list(frontmatter)
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assert keys.index("confidence_base") == keys.index("confidence") + 1
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def test_init_base_is_idempotent(decay_wiki):
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confidence_decay.confidence_init_base(apply=True)
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before = (decay_wiki / "entities/systems/aurora.md").read_text(encoding="utf-8")
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confidence_decay.confidence_init_base(apply=True)
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assert (decay_wiki / "entities/systems/aurora.md").read_text(encoding="utf-8") == before
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def test_decay_is_idempotent_across_runs(decay_wiki):
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"""The regression that motivated `confidence_base`: decaying the stored
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`confidence` in place compounded on every run, because the elapsed-months
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factor kept growing while the multiplicand had already shrunk."""
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confidence_decay.confidence_init_base(apply=True)
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confidence_decay.confidence_decay(apply=True)
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after_first = (decay_wiki / "entities/systems/aurora.md").read_text(encoding="utf-8")
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confidence_decay.confidence_decay(apply=True)
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confidence_decay.confidence_decay(apply=True)
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assert (decay_wiki / "entities/systems/aurora.md").read_text(encoding="utf-8") == after_first
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def test_decay_skips_pages_without_a_base(decay_wiki):
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"""Falling back to the stored `confidence` would silently reintroduce the
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compounding bug, so pages without a base are skipped instead."""
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confidence_decay.confidence_decay(apply=True)
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frontmatter, _ = read_page(decay_wiki / "entities/systems/aurora.md")
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assert frontmatter["confidence"] == 0.9
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def test_decay_skips_decision_pages(decay_wiki):
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"""A decision is not falsified by elapsed time, only by a later decision
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superseding it - `concept_type: decision` is a categorical skip, not
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something an old `modified` date should ever decay (Gitea #38)."""
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decision_path = decay_wiki / "concepts" / "some-decision.md"
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write_page(
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decision_path,
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{
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"type": "types/concept.md", "concept_type": "decision",
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"tags": [], "created": "2015-01-01", "modified": "2015-01-01",
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"related": [], "sources": [], "confidence": 0.9, "confidence_base": 0.9,
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},
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"\n# some-decision\n",
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)
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confidence_decay.confidence_decay(apply=True)
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frontmatter, _ = read_page(decision_path)
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assert frontmatter["confidence"] == 0.9
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