reedx/src/utils/__tests__/createSelectors.js

Like redux but with less code

import { Map } from 'immutable'
import { keys, values, every, isFunction } from 'lodash'

import createSelectors, { getInState } from '../createSelectors'

test('getInState()', () => {
  expect(getInState({ foo: 'foo' }, 'foo')).toBe('foo')
  expect(getInState(Map({ foo: 'foo' }), 'foo')).toBe('foo')
  expect(getInState('foo', 'foo')).toBe('foo')
})

test('one unique selector if model has not properties', () => {
  const name = 'counter'
  const state = 0

  expect(keys(createSelectors(name, { state }))).toEqual(['counter'])
})

test('multiple selectors in a object state', () => {
  const name = 'test'
  const state = {
    foo: 'foo',
    bar: 'bar'
  }

  const globalState = { test: { foo: 'foo', bar: 'bar' } }
  const selectors = createSelectors(name, { state })

  expect(keys(selectors)).toEqual(['foo', 'bar'])
  expect(every(values(selectors), (val) => isFunction(val))).toBeTruthy()

  expect(selectors.foo(globalState)).toBe('foo')
  expect(selectors.bar(globalState)).toBe('bar')
})

test('multiple selectors with immutable', () => {
  const name = 'test'
  const state = Map({
    foo: 'foo',
    bar: 'bar'
  })

  const globalState = Map({ test: { foo: 'foo', bar: 'bar' } })
  const selectors = createSelectors(name, { state })

  expect(keys(selectors)).toEqual(['foo', 'bar'])
  expect(every(values(selectors), (val) => isFunction(val))).toBeTruthy()

  expect(selectors.foo(globalState)).toBe('foo')
  expect(selectors.bar(globalState)).toBe('bar')
})