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

A functional programming library.

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

test('lastString(not using __), not empty string', () => {
  expect(
    lastString('murakami')
  ).toBe('i')
})

test('lastString(not using __), empty string', () => {
  expect(
    lastString('')
  ).toBe('')
})

test('lastString(using __), not empty string', () => {
  expect(
    lastString(__)('murakami')
  ).toBe('i')
})