58 lines
2.2 KiB
TypeScript
58 lines
2.2 KiB
TypeScript
/**
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* harvestSetHash unit tests (R3-004 ā skip unchanged-content rescans).
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*
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* The harvest route hashes an incoming item set and, when it matches the
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* source's stored last_content_hash, skips the O(nĀ·500) per-item rescan.
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* The digest must be: deterministic, order-independent (adapter jitter), and
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* sensitive to any id/title/content edit.
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*/
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import { describe, it, expect } from 'vitest';
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import { harvestSetHash } from '../../src/harvest/dedup.js';
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const A = { id: '1', title: 'Alpha', content: 'first body' };
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const B = { id: '2', title: 'Beta', content: 'second body' };
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describe('harvestSetHash', () => {
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it('is deterministic for the same set', () => {
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expect(harvestSetHash([A, B])).toBe(harvestSetHash([A, B]));
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});
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it('is order-independent (adapter ordering jitter must not change the digest)', () => {
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expect(harvestSetHash([A, B])).toBe(harvestSetHash([B, A]));
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});
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it('changes when an item content is edited (same id)', () => {
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const edited = { ...A, content: 'first body ā edited' };
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expect(harvestSetHash([A, B])).not.toBe(harvestSetHash([edited, B]));
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});
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it('changes when an item title is edited', () => {
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const edited = { ...A, title: 'Alpha 2' };
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expect(harvestSetHash([A, B])).not.toBe(harvestSetHash([edited, B]));
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});
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it('changes when an item is added or removed', () => {
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expect(harvestSetHash([A, B])).not.toBe(harvestSetHash([A]));
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expect(harvestSetHash([A])).not.toBe(harvestSetHash([]));
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});
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it('tolerates missing optional fields without throwing', () => {
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expect(() => harvestSetHash([{ content: 'x' }, { id: 'y' }, {}])).not.toThrow();
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});
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it('distinguishes two items that swap field values (id+title+content are positional per item)', () => {
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// Same multiset of strings but recombined differently ā different digest.
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const x = { id: '1', title: 'T', content: 'C' };
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const y = { id: '1', title: 'C', content: 'T' };
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expect(harvestSetHash([x])).not.toBe(harvestSetHash([y]));
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});
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it('does not collide when field boundaries contain spaces', () => {
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const compact = { id: 'a', title: 'b', content: 'c' };
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const shifted = { id: 'a b', title: 'c', content: '' };
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expect(harvestSetHash([compact])).not.toBe(harvestSetHash([shifted]));
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});
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});
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