choo-shortcache/example/node_modules/nanocomponent/test/node.js

choo nanocomponent cache shortcut

var Nanocomponent = require('../')
var test = require('tape')
var html = require('nanohtml')

test('cache', (t) => {
  t.test('should validate input types', (t) => {
    t.plan(1)
    var comp = new Nanocomponent()
    t.throws(comp.render.bind(comp), /createElement should be implemented/)
  })

  t.test('should render elements', (t) => {
    t.plan(2)

    function MyComp () {
      if (!(this instanceof MyComp)) return new MyComp()
      Nanocomponent.call(this)
    }
    MyComp.prototype = Object.create(Nanocomponent.prototype)

    MyComp.prototype.createElement = function (name) {
      return html`<div>${name}</div>`
    }

    MyComp.prototype.update = function (name) {
      return false
    }

    var myComp = new MyComp()

    var el1 = myComp.render('mittens')
    t.equal(String(el1), '<div>mittens</div>', 'init render success')

    var el3 = myComp.render('scruffles')
    t.equal(String(el3), '<div>scruffles</div>', 're-render success')
  })
})