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import {add} from './add'import {compose} from './compose'import {compose as composeRamda} from 'ramda'import {filter} from './filter'import {last} from './last'import {map} from './map'
test('happy', () => {  const result = compose(last, map(add(10)), map(add(1)))([1, 2, 3])
  expect(result).toEqual(14)})
test('can accepts initially two arguments', () => {  const result = compose(    map(x => x * 2),    (list, limit) => filter(x => x > limit, list)  )([1, 2, 3, 4, false], 2)
  expect(result).toEqual([6, 8])})
test('when no arguments is passed', () => {  expect(() => compose()).toThrow('compose requires at least one argument')})
test('ramda spec', () => {  const f = function (a, b, c) {    return [a, b, c]  }  const g = compose(f)
  expect(g(1, 2, 3)).toEqual([1, 2, 3])})
test('does not return correct length of composed function', () => {  expect(compose(map, map, map).length).toBe(0)  expect(composeRamda(map, map, map).length).toBe(2)})