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path: root/tests/basic.spec.ts
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import { left, right } from 'fp-ts/Either'
import {
  many0,
  digit,
  integer,
  whitespace,
  suffixed,
  prefixed,
  whitespaces0,
  delimited,
  symbol,
  optional,
} from '../src/parser'
import { parser } from '../src'
import {some} from 'fp-ts/lib/Option'

describe('Foobar', () => {
  it('should do shit', () => {
    expect(integer('12901')).toEqual(right([12901, '']))
    expect(integer('12901asas')).toEqual(right([12901, 'asas']))
    expect(whitespace(' ')).toEqual(right([' ', '']))
    expect(whitespace('\n')).toEqual(right(['\n', '']))
    expect(whitespace('a')).toEqual(left(['unable to match', 'a']))

    expect(delimited(whitespaces0, integer, whitespaces0)(' 20 ')).toEqual(
      right([20, ''])
    )
    expect(delimited(whitespaces0, integer, whitespaces0)(' 2 0 ')).toEqual(
      right([2, '0 '])
    )
  })

  it('should maybeshut', () => {
    expect(parser(/^ .\s(\n)\b  \T $/.source)).toEqual(right([
      [
        some({ tag: 'Start' }),
        [
          { tag: 'AnyItem' },
          { tag: 'AnyString' },
          { tag: 'Group', exprs: [{ tag: 'AnyNumber' },] },
          { tag: 'AnyBool' },
          { tag: 'Truthy' },
        ],
        some({ tag: 'End' }),
      ],
      ''
    ]))
  })
})