moy-fp/test/String/nthString.test.js

A functional programming library.

import __ from '../../src/Function/__'
/**
 * Number -> String -> String
 */
import nthString from '../../src/String/nthString'

test('nthString(not using __), positive number', () => {
  expect(
    nthString(2)('murakami')
  ).toBe('r')
})

test('nthString(not using __), negative number', () => {
  expect(
    nthString(-2)('murakami')
  ).toBe('m')
})

test('nthString(using __), positive number', () => {
  expect(
    nthString(__, 'murakami')(2)
  ).toBe('r')
})