blog/tests/unit/queries.utils.test.ts

import { describe, expect, it } from 'vitest'
import { PAGE_SIZE, langParam, pageParam, pagination, quote } from '../../frontend/server/utils/queries'

describe('pagination', () => {
  it('defaults to PAGE_SIZE', () => {
    expect(pagination(2)).toBe(`page=2&perPage=${PAGE_SIZE}`)
  })

  it('accepts a custom page size', () => {
    expect(pagination(1, 5)).toBe('page=1&perPage=5')
  })
})

describe('pageParam', () => {
  it('accepts a positive integer', () => {
    expect(pageParam('3')).toBe(3)
    expect(pageParam(3)).toBe(3)
  })

  it.each([undefined, null, '', 'abc', '0', '-1', '1.5', NaN])(
    'falls back to 1 for invalid input %p',
    (value) => {
      expect(pageParam(value)).toBe(1)
    }
  )
})

describe('langParam', () => {
  it('accepts "en"', () => {
    expect(langParam('en')).toBe('en')
  })

  it.each([undefined, null, '', 'it', 'fr', 123])('falls back to "it" for %p', (value) => {
    expect(langParam(value)).toBe('it')
  })
})

describe('quote', () => {
  it('wraps a plain value in double quotes', () => {
    expect(quote('economia')).toBe('"economia"')
  })

  it('escapes embedded double quotes', () => {
    expect(quote('la "crisi"')).toBe('"la \\"crisi\\""')
  })
})