moy-fp/test/List/lengthList.test.js

A functional programming library.

import __ from '../../src/Function/__'
/**
 * [a] -> Number
 */
import lengthList from '../../src/List/lengthList'

test('lengthList(not using __)', () => {
  expect(
    lengthList([1, 2, 3, 4])
  ).toBe(4)
})

test('lengthList(using __)', () => {
  expect(
    lengthList(__)([1, 2, 3, 4])
  ).toBe(4)
})