typescript-monads/src/index.spec.ts

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import { maybe, Maybe, either, Either, ok, fail, Result, reader, Reader, listOf, List, unwrapResultAsObservable } from './index'

describe('package api', () => {
  it('should export maybe', () => {
    expect(maybe(1)).toBeInstanceOf(Maybe)
  })

  it('should export either', () => {
    expect(either(1)).toBeInstanceOf(Either)
  })

  it('should export result', () => {
    expect(ok(1)).toBeInstanceOf(Result)
    expect(fail(1)).toBeInstanceOf(Result)
  })

  it('should export reader', () => {
    expect(reader(() => 1)).toBeInstanceOf(Reader)
  })

  it('should export reader', () => {
    expect(listOf(1, 2)).toBeInstanceOf(List)
  })

  it('should export unwrapResult', () => {
    expect(unwrapResultAsObservable()).toBeInstanceOf(Function)
  })
})