moy-fp/test/Object/view.test.js

A functional programming library.

import __ from '../../src/Function/__'
import lensProp from '../../src/Object/lensProp'
/**
 * Lens s a -> s -> a
 * Lens s a = Functor f => (a -> f a) -> s -> f s  
 */
import view from '../../src/Object/view'

test('view(not using __)', () => {
  expect(
    view(lensProp('a'))({a: 1})
  ).toBe(1)
})

test('view(not using __)', () => {
  expect(
    view(__, {a: 1})(lensProp('a'))
  ).toBe(1)
})