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23 lines
707 B
TypeScript
23 lines
707 B
TypeScript
import { describe, expect, it } from 'vitest'
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import { upsert } from '../lib/messages.js'
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describe('upsert', () => {
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it('appends when last role differs', () => {
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expect(upsert([{ role: 'user', text: 'hi' }], 'assistant', 'hello')).toHaveLength(2)
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})
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it('replaces when last role matches', () => {
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expect(upsert([{ role: 'assistant', text: 'partial' }], 'assistant', 'full')[0]!.text).toBe('full')
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})
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it('appends to empty', () => {
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expect(upsert([], 'user', 'first')).toEqual([{ role: 'user', text: 'first' }])
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})
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it('does not mutate', () => {
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const prev = [{ role: 'user' as const, text: 'hi' }]
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upsert(prev, 'assistant', 'yo')
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expect(prev).toHaveLength(1)
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})
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})
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