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

A functional programming library.

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

test('any(not using __), return true', () => {
  expect(
    any(x => x > 3)([1, 2, 3, 4])
  ).toBeTruthy()
})

test('any(not using __), return false', () => {
  expect(
    any(x => x > 4)([1, 2, 3, 4])
  ).toBeFalsy()
})

test('any(using __), return true', () => {
  expect(
    any(__, [1, 2, 3, 4])(x => x > 3)
  ).toBeTruthy()
})