moy-fp/test/Math/inc.test.js

A functional programming library.

import __ from '../../src/Function/__'
/**
 * Number -> Number
 */
import inc from '../../src/Math/inc'

test('inc(not using __', () => {
  expect(
    inc(3)
  ).toBe(4)
})

test('inc(using __)', () => {
  expect(
    inc(__)(3)
  ).toBe(4)
})