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test(memory): tighten cycles digest coverage #505

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test(memory): tighten cycles digest coverage #505

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16 changes: 12 additions & 4 deletions backend/__tests__/unit/services/agentMemoryService.cycles.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -202,14 +202,22 @@ describe('digest builders (pure)', () => {
expect(buildCyclesDigest({ sections: {} })).toEqual([]);
});

it('returns up to N most-recent entries', () => {
const entries = Array.from({ length: 10 }, (_, i) => ({ ts: new Date(), content: `c${i}` }));
expect(buildCyclesDigest({ sections: { cycles: { entries } } }, 3)).toHaveLength(3);
it('returns the most recent entries in storage order up to the cap', () => {
const entries = [
{ ts: new Date('2026-05-04T00:02:00Z'), content: 'newest' },
{ ts: new Date('2026-05-04T00:01:00Z'), content: 'middle' },
{ ts: new Date('2026-05-04T00:00:00Z'), content: 'older' },
];
expect(buildCyclesDigest({ sections: { cycles: { entries } } }, 2)).toEqual(entries.slice(0, 2));
});

it('emits all entries when fewer than the cap', () => {
const entries = [{ ts: new Date(), content: 'one' }, { ts: new Date(), content: 'two' }];
expect(buildCyclesDigest({ sections: { cycles: { entries } } }, 5)).toHaveLength(2);
expect(buildCyclesDigest({ sections: { cycles: { entries } } }, 5)).toEqual(entries);
});

it('returns [] when cycles exists but entries is empty', () => {
expect(buildCyclesDigest({ sections: { cycles: { entries: [] } } })).toEqual([]);
});
});

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