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

A functional programming library.

import __ from '../../src/Function/__'
/**
 * ((a, a) -> Number) -> [a] -> [a]
 */
import sort from '../../src/List/sort'

test('sort(not using __)', () => {
  expect(
    sort((a, b) => b - a)([1, 2, 3, 4])
  ).toEqual([4, 3, 2, 1])
})

test('sort(using __)', () => {
  expect(
    sort(__, [1, 2, 3, 4])((a, b) => b - a)
  ).toEqual([4, 3, 2, 1])
})