rsnext/test/unit/page-route-sorter.test.js

/* eslint-env jest */
import { getSortedRoutes } from 'next-server/dist/lib/router/utils/sorted-routes'

describe('getSortedRoutes', () => {
  it('does not add extra routes', () => {
    expect(getSortedRoutes(['/posts'])).toEqual(['/posts'])

    expect(getSortedRoutes(['/posts/[id]'])).toEqual(['/posts/[id]'])
    expect(getSortedRoutes(['/posts/[id]/foo'])).toEqual(['/posts/[id]/foo'])

    expect(getSortedRoutes(['/posts/[id]/[foo]/bar'])).toEqual([
      '/posts/[id]/[foo]/bar'
    ])
    expect(getSortedRoutes(['/posts/[id]/baz/[foo]/bar'])).toEqual([
      '/posts/[id]/baz/[foo]/bar'
    ])
  })

  it('correctly sorts required slugs', () => {
    expect(
      getSortedRoutes([
        '/posts',
        '/[root-slug]',
        '/',
        '/posts/[id]',
        '/blog/[id]/comments/[cid]',
        '/blog/[id]',
        '/foo/[d]/bar/baz/[f]',
        '/apples/[ab]/[cd]/ef'
      ])
    ).toMatchSnapshot()
  })

  it('catches mismatched param names', () => {
    expect(() =>
      getSortedRoutes([
        '/',
        '/blog',
        '/blog/[id]',
        '/blog/[id]/comments/[cid]',
        '/blog/[cid]'
      ])
    ).toThrowError(/different slug names/)
  })
})