/* eslint-env mocha */

import { garbage } from 'ipld-garbage'
import { decode, encode } from '../cborg.js'
import chai from 'chai'

const { assert } = chai

describe('Fuzz round-trip', () => {
  it('random objects', function () {
    this.timeout(5000)
    for (let i = 0; i < 1000; i++) {
      const obj = garbage(300, { weights: { CID: 0 } })
      const byts = encode(obj)
      const decoded = decode(byts)
      assert.deepEqual(decoded, obj)
    }
  })

  it('circular references error', () => {
    let obj = {}
    obj.obj = obj
    assert.throws(() => encode(obj), /circular references/)

    obj = { blip: [1, 2, { blop: {} }] }
    obj.blip[2].blop.boop = obj
    assert.throws(() => encode(obj), /circular references/)

    obj = { blip: [1, 2, { blop: {} }] }
    obj.blip[2].blop.boop = obj.blip
    assert.throws(() => encode(obj), /circular references/)

    // not circular but a naive check might decide it is
    obj = { blip: {}, bloop: {} }
    obj.bloop = obj.blip
    assert.doesNotThrow(() => encode(obj))

    const arr = []
    arr[0] = arr
    assert.throws(() => encode(arr), /circular references/)
  })
})