moy-fp/test/List/reject.test.js

A functional programming library.

import __ from '../../src/Function/__'
/**
 * (a -> Boolean) -> [a] -> [a]
 */
import reject from '../../src/List/reject'

test('reject(not using __)', () => {
  expect(
    reject(x => x > 2)([1, 2, 3, 4])
  ).toEqual([1, 2])
})

test('reject(using __)', () => {
  expect(
    reject(__, [1, 2, 3, 4])(x => x > 2)
  ).toEqual([1, 2])
})