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

A functional programming library.

import __ from '../../src/Function/__'
/**
 * b -> a -> a | b
 */
import or from '../../src/Logic/or'

test('or(not using __), return a',() => {
  expect(
    or('')('murakami')
  ).toBe('murakami')
})

test('or(not using __), return b',() => {
  expect(
    or('murakami')('')
  ).toBe('murakami')
})

test('or(using __), return a',() => {
  expect(
    or(__, 'murakami')('')
  ).toBe('murakami')
})