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import BaseComponent from '../../src/base-component'
import { clearFixture, getFixture } from '../helpers/fixture'
import EventHandler from '../../src/dom/event-handler'
import { noop } from '../../src/util'
class DummyClass extends BaseComponent {
constructor(element) {
super(element)
EventHandler.on(this._element, `click${DummyClass.EVENT_KEY}`, noop)
}
static get NAME() {
return 'dummy'
}
}
describe('Base Component', () => {
let fixtureEl
const name = 'dummy'
let element
let instance
const createInstance = () => {
fixtureEl.innerHTML = '<div id="foo"></div>'
element = fixtureEl.querySelector('#foo')
instance = new DummyClass(element)
}
beforeAll(() => {
fixtureEl = getFixture()
})
afterEach(() => {
clearFixture()
})
describe('Static Methods', () => {
describe('VERSION', () => {
it('should return version', () => {
expect(typeof DummyClass.VERSION).toEqual('string')
})
})
describe('DATA_KEY', () => {
it('should return plugin data key', () => {
expect(DummyClass.DATA_KEY).toEqual(`bs.${name}`)
})
})
describe('NAME', () => {
it('should return plugin NAME', () => {
expect(DummyClass.NAME).toEqual(name)
})
})
describe('EVENT_KEY', () => {
it('should return plugin event key', () => {
expect(DummyClass.EVENT_KEY).toEqual(`.bs.${name}`)
})
})
})
describe('Public Methods', () => {
describe('constructor', () => {
it('should accept element, either passed as a CSS selector or DOM element', () => {
fixtureEl.innerHTML = [
'<div id="foo"></div>',
'<div id="bar"></div>'
].join('')
const el = fixtureEl.querySelector('#foo')
const elInstance = new DummyClass(el)
const selectorInstance = new DummyClass('#bar')
expect(elInstance._element).toEqual(el)
expect(selectorInstance._element).toEqual(fixtureEl.querySelector('#bar'))
})
})
describe('dispose', () => {
it('should dispose an component', () => {
createInstance()
expect(DummyClass.getInstance(element)).not.toBeNull()
instance.dispose()
expect(DummyClass.getInstance(element)).toBeNull()
expect(instance._element).toBeNull()
})
it('should de-register element event listeners', () => {
createInstance()
spyOn(EventHandler, 'off')
instance.dispose()
expect(EventHandler.off).toHaveBeenCalledWith(element, DummyClass.EVENT_KEY)
})
})
describe('getInstance', () => {
it('should return an instance', () => {
createInstance()
expect(DummyClass.getInstance(element)).toEqual(instance)
expect(DummyClass.getInstance(element)).toBeInstanceOf(DummyClass)
})
it('should return null when there is no instance', () => {
fixtureEl.innerHTML = '<div></div>'
const div = fixtureEl.querySelector('div')
expect(DummyClass.getInstance(div)).toEqual(null)
})
})
})
})
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