mirror of
https://github.com/kuhyx/diet-guard.git
synced 2026-07-04 11:43:07 +02:00
Krzysztof kuhy Rudnicki
843f5e0221
Rewrites python_pkg.diet_guard imports to diet_guard, vendors the shared as_float coercion helper, drops the monorepo PYTHONPATH from install.sh and the systemd unit (package is now pip-installed), and scaffolds standalone lint/test config matching testsAndMisc's real enforced bar (pylint --fail-under=10 with tests excluded and the use-implicit-booleaness/consider-using-with disables, mypy's actual disabled-error-code set, ruff ALL, bandit, 100% branch coverage).
47 lines
1.8 KiB
Python
47 lines
1.8 KiB
Python
"""Tests for _fuzzy.py — token-aware fuzzy matching.
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Covers both the substring fast path and the per-word token scorer, including
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the degenerate empty-input branch that falls back to a whole-string ratio.
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"""
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from __future__ import annotations
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from diet_guard._fuzzy import match_score, token_score
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class TestTokenScore:
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"""The per-word best-match averaging scorer."""
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def test_empty_query_falls_back_to_ratio(self) -> None:
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"""An empty query has no words, so a whole-string ratio is used (0.0)."""
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assert token_score("", "apple") == 0.0
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def test_empty_name_falls_back_to_ratio(self) -> None:
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"""An empty name has no words, so the ratio path runs."""
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assert token_score("apple", "") == 0.0
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def test_perfect_word_match(self) -> None:
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"""Identical single words score 1.0."""
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assert token_score("apple", "apple") == 1.0
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def test_typo_word_scores_high(self) -> None:
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"""A near-miss word (beast/breast) scores well above the 0.6 bar."""
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assert token_score("beast", "breast") > 0.8
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def test_multiword_averages_best_per_word(self) -> None:
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"""Each query word takes its best name word; the mean is in (0, 1)."""
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score = token_score("grilled chicken", "chicken breast")
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assert 0.0 < score < 1.0
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class TestMatchScore:
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"""Substring containment first, then the token scorer."""
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def test_substring_beats_one(self) -> None:
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"""A contained query scores above 1.0 (1 + coverage fraction)."""
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assert match_score("breast", "chicken breast") > 1.0
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def test_non_substring_uses_token_score(self) -> None:
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"""A typo that is not a substring routes to the token scorer (< 1.0)."""
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assert match_score("beast", "breast") == token_score("beast", "breast")
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