element-plus/packages/components/image/__tests__/image.spec.ts

136 lines
3.5 KiB
TypeScript

import { nextTick } from 'vue'
import { mount } from '@vue/test-utils'
import {
IMAGE_SUCCESS,
IMAGE_FAIL,
mockImageEvent,
} from '@element-plus/test-utils/mock'
import Image from '../src/image.vue'
// firstly wait for image event
// secondly wait for vue render
async function doubleWait() {
await nextTick()
await nextTick()
}
describe('Image.vue', () => {
mockImageEvent()
test('render test', () => {
const wrapper = mount(Image)
expect(wrapper.find('.el-image').exists()).toBe(true)
})
test('image load success test', async () => {
const alt = 'this ia alt'
const wrapper = mount(Image, {
props: {
src: IMAGE_SUCCESS,
alt,
},
})
expect(wrapper.find('.el-image__placeholder').exists()).toBe(true)
await doubleWait()
expect(wrapper.find('.el-image__inner').exists()).toBe(true)
expect(wrapper.find('img').exists()).toBe(true)
expect(wrapper.find('.el-image__placeholder').exists()).toBe(false)
expect(wrapper.find('.el-image__error').exists()).toBe(false)
})
test('image load error test', async () => {
const wrapper = mount(Image, {
props: {
src: IMAGE_FAIL,
},
})
await doubleWait()
expect(wrapper.emitted('error')).toBeDefined()
expect(wrapper.find('.el-image__inner').exists()).toBe(false)
expect(wrapper.find('img').exists()).toBe(false)
expect(wrapper.find('.el-image__error').exists()).toBe(true)
})
test('imageStyle fit test', async () => {
const fits = ['fill', 'contain', 'cover', 'none', 'scale-down']
for (const fit of fits) {
const wrapper = mount(Image, {
props: { fit, src: IMAGE_SUCCESS },
})
await doubleWait()
expect(wrapper.find('img').attributes('style')).toContain(
`object-fit: ${fit};`
)
}
})
test('preview classname test', async () => {
const wrapper = mount(Image, {
props: {
fit: 'cover',
src: IMAGE_SUCCESS,
previewSrcList: new Array(3).fill(IMAGE_SUCCESS),
},
})
await doubleWait()
expect(wrapper.find('img').classes()).toContain('el-image__preview')
})
test('preview initial index test', async () => {
const wrapper = mount(Image, {
props: {
src: IMAGE_SUCCESS,
previewSrcList: new Array(3).fill(IMAGE_FAIL),
initialIndex: 1,
},
})
await doubleWait()
await wrapper.find('.el-image__inner').trigger('click')
expect(
wrapper.findAll('.el-image-viewer__img')[1].attributes('style')
).not.toContain('display: none')
})
test('$attrs', async () => {
const alt = 'this ia alt'
const wrapper = mount(Image, {
props: {
src: IMAGE_SUCCESS,
alt,
referrerpolicy: 'origin',
},
})
await doubleWait()
expect(wrapper.find('img').attributes('alt')).toBe(alt)
expect(wrapper.find('img').attributes('referrerpolicy')).toBe('origin')
})
test('pass event listeners', async () => {
let result = false
const wrapper = mount(Image, {
props: {
src: IMAGE_SUCCESS,
onClick: () => (result = true),
},
})
await doubleWait()
await wrapper.find('.el-image__inner').trigger('click')
expect(result).toBeTruthy()
})
test('emit load event', async () => {
const handleLoad = jest.fn()
const wrapper = mount(Image, {
props: {
src: IMAGE_SUCCESS,
onLoad: handleLoad,
},
})
await doubleWait()
expect(wrapper.find('.el-image__inner').exists()).toBe(true)
expect(handleLoad).toBeCalled()
})
//@todo lazy image test
})