34 lines
1.1 KiB
TypeScript
34 lines
1.1 KiB
TypeScript
|
import { describe, expect, it } from 'vitest'
|
||
|
|
import { addSeen } from '../logic/storage'
|
||
|
|
|
||
|
|
describe('addSeen', () => {
|
||
|
|
it('appends new keys to the end', () => {
|
||
|
|
expect(addSeen(['a', 'b'], ['c', 'd'])).toEqual(['a', 'b', 'c', 'd'])
|
||
|
|
})
|
||
|
|
|
||
|
|
it('deduplicates existing keys', () => {
|
||
|
|
expect(addSeen(['a', 'b'], ['b', 'c'])).toEqual(['a', 'b', 'c'])
|
||
|
|
})
|
||
|
|
|
||
|
|
it('handles all-duplicate addition', () => {
|
||
|
|
expect(addSeen(['a', 'b'], ['a', 'b'])).toEqual(['a', 'b'])
|
||
|
|
})
|
||
|
|
|
||
|
|
it('respects MAX_SEEN cap (5000) by trimming oldest', () => {
|
||
|
|
const existing = Array.from({ length: 5000 }, (_, i) => `k${i}`)
|
||
|
|
const out = addSeen(existing, ['new1', 'new2'])
|
||
|
|
expect(out).toHaveLength(5000)
|
||
|
|
expect(out[out.length - 1]).toBe('new2')
|
||
|
|
expect(out[out.length - 2]).toBe('new1')
|
||
|
|
// 最旧的 'k0' 和 'k1' 被挤出
|
||
|
|
expect(out.includes('k0')).toBe(false)
|
||
|
|
expect(out.includes('k1')).toBe(false)
|
||
|
|
})
|
||
|
|
|
||
|
|
it('empty input', () => {
|
||
|
|
expect(addSeen([], [])).toEqual([])
|
||
|
|
expect(addSeen([], ['a'])).toEqual(['a'])
|
||
|
|
expect(addSeen(['a'], [])).toEqual(['a'])
|
||
|
|
})
|
||
|
|
})
|