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import { partial } from './partial'import { type } from './type'
const greet = (  salutation, title, firstName, lastName) =>  salutation + ', ' + title + ' ' + firstName + ' ' + lastName + '!'
test('happy', () => {  const canPassAnyNumberOfArguments = partial(    greet, 'Hello', 'Ms.'  )  const fn = canPassAnyNumberOfArguments('foo')  const sayHello = partial(greet, [ 'Hello' ])  const sayHelloRamda = partial(sayHello, [ 'Ms.' ])
  expect(type(fn)).toBe('Function')
  expect(fn('bar')).toBe('Hello, Ms. foo bar!')  expect(sayHelloRamda('foo', 'bar')).toBe('Hello, Ms. foo bar!')})
test('extra arguments are ignored', () => {  const canPassAnyNumberOfArguments = partial(    greet, 'Hello', 'Ms.'  )  const fn = canPassAnyNumberOfArguments('foo')
  expect(type(fn)).toBe('Function')
  expect(fn(    'bar', 1, 2  )).toBe('Hello, Ms. foo bar!')})
test('when array is input', () => {  const fooFn = (    a, b, c, d  ) => ({    a,    b,    c,    d,  })  const barFn = partial(    fooFn, [ 1, 2 ], []  )
  expect(barFn(1, 2)).toEqual({    a : [ 1, 2 ],    b : [],    c : 1,    d : 2,  })})
test('ramda spec', () => {  const sayHello = partial(greet, 'Hello')  const sayHelloToMs = partial(sayHello, 'Ms.')
  expect(sayHelloToMs('Jane', 'Jones')).toBe('Hello, Ms. Jane Jones!')})