file-commons/src/getUrlScheme.test.ts

import * as fc from 'fast-check'
import getUrlScheme, { UrlScheme } from './getUrlScheme'

it('should exist', () => {
  expect(getUrlScheme).toBeDefined()
})

it('should be a callable', () => {
  expect(typeof getUrlScheme).toBe('function')
})

it('should accept 1 argument', () => {
  expect(getUrlScheme).toHaveLength(1)
})

test.each`
  scheme     | kind
  ${'http'}  | ${'HTTP'}
  ${'https'} | ${'HTTPS'}
`('should detect $kind URLs', ({ scheme, kind }) => {
  fc.assert(
    fc.property(fc.webUrl({ validSchemes: [scheme] }), url => {
      expect(getUrlScheme(url)).toBe(UrlScheme[kind as keyof typeof UrlScheme])
    })
  )
})

it('should fall back to local URLs', () => {
  fc.assert(
    fc.property(
      fc.array(
        fc.oneof(
          fc.string().filter(s => /^[a-zA-Z0-9._-]+$/.test(s)),
          fc.constant('..'),
          fc.constant('.')
        )
      ),
      pathFragments => {
        expect(getUrlScheme(pathFragments.join('/'))).toBe(UrlScheme.FILE)
      }
    )
  )
})