bootstrap-vue/src/components/modal/helpers/bv-modal-event.class.spec.js

BootstrapVue, with over 40 plugins and more than 75 custom components, provides one of the most comprehensive implementations of Bootstrap v4 components and grid system for Vue.js. With extensive and automated WAI-ARIA accessibility markup.

import BvEvent from '../../../utils/bv-event.class'
import BvModalEvent from './bv-modal-event.class'

describe('modal > BvModalEvent', () => {
  it('works', async () => {
    const evt = new BvModalEvent('foobar')
    expect(evt).toBeInstanceOf(BvModalEvent)
    expect(evt).toBeInstanceOf(BvEvent)
    expect(evt.type).toBe('foobar')
  })

  it('throws exception if no type given', async () => {
    let evt = null
    let failed = false
    try {
      evt = new BvModalEvent()
    } catch (e) {
      failed = true
    }
    expect(evt).not.toBeInstanceOf(BvModalEvent)
    expect(evt).not.toBeInstanceOf(BvEvent)
    expect(evt).toBe(null)
    expect(failed).toBe(true)
  })

  it('supports cancelable events via evt.preventDefault()', async () => {
    const evt = new BvModalEvent('foobar', {
      cancelable: true
    })
    expect(evt).toBeInstanceOf(BvModalEvent)
    expect(evt.type).toBe('foobar')
    expect(evt.cancelable).toBe(true)
    expect(evt.defaultPrevented).toBe(false)
    evt.preventDefault()
    expect(evt.defaultPrevented).toBe(true)
  })

  it('supports non cancelable events', async () => {
    const evt = new BvModalEvent('foobar', {
      cancelable: false
    })
    expect(evt).toBeInstanceOf(BvModalEvent)
    expect(evt.type).toBe('foobar')
    expect(evt.cancelable).toBe(false)
    expect(evt.defaultPrevented).toBe(false)
    evt.preventDefault()
    expect(evt.defaultPrevented).toBe(false)
  })

  it('supports built in properties', async () => {
    const evt = new BvModalEvent('foobar', {
      target: 'baz',
      trigger: 'ok',
      componentId: 'foo'
    })
    expect(evt).toBeInstanceOf(BvModalEvent)
    expect(evt.type).toBe('foobar')
    expect(evt.cancelable).toBe(true)
    expect(evt.target).toBe('baz')
    expect(evt.trigger).toBe('ok')
    expect(evt.componentId).toBe('foo')

    let failed = false
    try {
      evt.trigger = 'foobar'
    } catch (e) {
      failed = true
    }
    expect(failed).toBe(true)
    expect(evt.trigger).toBe('ok')

    failed = false
    try {
      evt.modalId = 'fail'
    } catch (e) {
      failed = true
    }
    expect(failed).toBe(true)
    expect(evt.componentId).toBe('foo')
  })

  it('supports custom properties', async () => {
    const evt = new BvEvent('foobar', {
      custom: 123
    })
    expect(evt).toBeInstanceOf(BvEvent)
    expect(evt.type).toBe('foobar')
    expect(evt.cancelable).toBe(true)
    expect(evt.custom).toBe(123)
  })

  describe('Deprecated features', () => {
    it('supports cancelable events via deprecated evt.cancel()', async () => {
      // Mock `console.warn()` to prevent a console warning and
      // check wether a warning about the `evt.cancel()` call
      // was made
      const warn = console.warn
      console.warn = jest.fn()

      const evt = new BvModalEvent('foobar', {
        cancelable: true
      })

      expect(evt).toBeInstanceOf(BvModalEvent)
      expect(evt.type).toBe('foobar')
      expect(evt.cancelable).toBe(true)
      expect(evt.defaultPrevented).toBe(false)
      evt.cancel()
      expect(evt.defaultPrevented).toBe(true)

      expect(console.warn).toHaveBeenCalled()
      console.warn = warn
    })

    it('supports deprecated evt.modalId', async () => {
      // Mock `console.warn()` to prevent a console warning and
      // check wether a warning about the `evt.cancel()` call
      // was made
      const warn = console.warn
      console.warn = jest.fn()

      const evt = new BvModalEvent('foobar', {
        componentId: 'foo'
      })

      expect(evt).toBeInstanceOf(BvModalEvent)
      expect(evt.type).toBe('foobar')
      expect(evt.componentId).toBe('foo')
      expect(evt.modalId).toBe('foo')

      expect(console.warn).toHaveBeenCalled()
      console.warn = warn
    })
  })
})