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morluto
e652f4409e
* fix(verify): rewrite counted baselines only when a count was lowered * test(verify): own the baseline write decision in a tested helper
39 lines
1.5 KiB
JavaScript
39 lines
1.5 KiB
JavaScript
/**
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* Compare observed per-file counts with a counted baseline. A file may not
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* exceed its recorded count. A count below the baseline is stale; with
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* `shrink`, the returned baseline lowers it (and drops zero entries) but never
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* raises any count; `lowered` says whether it did, so callers rewrite a
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* baseline only when it changed.
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*/
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export const compareCountedBaseline = (counts, baseline, shrink) => {
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const grown = [];
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const stale = [];
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for (const [path, count] of counts) {
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const allowed = baseline[path] ?? 0;
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if (count > allowed) grown.push({ path, count, allowed });
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}
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for (const [path, allowed] of Object.entries(baseline)) {
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const count = counts.get(path) ?? 0;
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if (count < allowed) stale.push({ path, count, allowed });
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}
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if (!shrink || stale.length === 0)
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return { grown, stale, baseline, lowered: false };
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const shrunk = { ...baseline };
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for (const { path, count } of stale)
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if (count === 0) delete shrunk[path];
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else shrunk[path] = count;
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return { grown, stale: [], baseline: shrunk, lowered: true };
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};
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/**
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* Record a comparison's lowered baseline under `key` in the full baseline
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* map. Returns whether the map changed, so the caller rewrites the file only
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* then. A key whose last count was removed is deleted rather than kept empty.
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*/
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export const recordLoweredBaseline = (baselines, key, compared) => {
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if (!compared.lowered) return false;
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if (Object.keys(compared.baseline).length === 0) delete baselines[key];
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else baselines[key] = compared.baseline;
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return true;
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};
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