moy-fp/test/Logic/either.test.js

A functional programming library.

import __ from '../../src/Function/__'
/**
 * ((a, b, ..., m) -> Boolean) -> ((a, b, ..., m) -> Boolean) -> ((a, b, ..., m) -> Boolean)
 */
import either from '../../src/Logic/either'

test('eithor(not using __), return true', () => {
  expect(
    either((a, b) => a + b > 10)((a, b) => a - b < -10)(5)(16)
  ).toBeTruthy()
})

test('eithor(not using __), return false', () => {
  expect(
    either((a, b) => a + b > 10)((a, b) => a - b < -10)(5)(5)
  ).toBeFalsy()
})

test('eithor(using __), return true', () => {
  expect(
    either(__, (a, b) => a - b < -10)((a, b) => a + b > 10)(5)(16)
  ).toBeTruthy()
})