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

A functional programming library.

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

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

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

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