bootstrap-vue/src/components/table/table-tbody-transition.spec.js

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import { config as vtuConfig, mount } from '@vue/test-utils'
import { TransitionGroupStub } from '../../../tests/components'
import { isVue3 } from '../../vue'
import { BTable } from './table'

// Stub `<transition-group>` component
if (!isVue3) {
  vtuConfig.stubs['transition-group'] = TransitionGroupStub
}

const testItems = [{ a: 1, b: 2, c: 3 }, { a: 5, b: 5, c: 6 }, { a: 7, b: 8, c: 9 }]
const testFields = ['a', 'b', 'c']

describe('table > tbody transition', () => {
  if (isVue3) {
    // @vue/test-utils does not support stubbing transition, so impossible to test ATM

    // adding dummy test to keep jest happy
    it('skipped due to vue3', () => {})
    return
  }

  it('tbody should not be a transition-group component by default', async () => {
    const wrapper = mount(BTable, {
      attachTo: document.body,
      propsData: {
        fields: testFields,
        items: testItems
      }
    })
    expect(wrapper).toBeDefined()
    expect(wrapper.element.tagName).toBe('TABLE')
    expect(wrapper.find('tbody').exists()).toBe(true)
    expect(wrapper.find('tbody').element.tagName).toBe('TBODY')
    // `<transition-group>` stub doesn't render itself with the specified tag
    expect(wrapper.findComponent(TransitionGroupStub).exists()).toBe(false)

    wrapper.destroy()
  })

  it('tbody should be a transition-group component when tbody-transition-props set', async () => {
    const wrapper = mount(BTable, {
      attachTo: document.body,
      propsData: {
        fields: testFields,
        items: testItems,
        tbodyTransitionProps: {
          name: 'fade'
        }
      }
    })
    expect(wrapper).toBeDefined()
    expect(wrapper.element.tagName).toBe('TABLE')
    // `<transition-group>` stub doesn't render itself with the specified tag
    expect(wrapper.findComponent(TransitionGroupStub).exists()).toBe(true)
    expect(wrapper.find('tbody').exists()).toBe(false)

    wrapper.destroy()
  })

  it('tbody should be a transition-group component when tbody-transition-handlers set', async () => {
    const wrapper = mount(BTable, {
      attachTo: document.body,
      propsData: {
        fields: testFields,
        items: testItems,
        tbodyTransitionHandlers: {
          onBeforeEnter: () => {},
          onAfterEnter: () => {},
          onBeforeLeave: () => {},
          onAfterLeave: () => {}
        }
      }
    })
    expect(wrapper).toBeDefined()
    expect(wrapper.element.tagName).toBe('TABLE')
    // `<transition-group>` stub doesn't render itself with the specified tag
    expect(wrapper.findComponent(TransitionGroupStub).exists()).toBe(true)
    expect(wrapper.find('tbody').exists()).toBe(false)

    wrapper.destroy()
  })
})