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import addStylesClient from '../lib/addStylesClient'
import addStylesServer from '../lib/addStylesServer'
const mockedList = [
[1, 'h1 { color: red; }', ''],
[1, 'p { color: green; }', ''],
[2, 'span { color: blue; }', ''],
[2, 'span { color: blue; }', 'print']
]
test('addStylesClient (dev)', () => {
const update = addStylesClient('foo', mockedList, false)
assertStylesMatch(mockedList)
const mockedList2 = mockedList.slice(1, 3)
update(mockedList2)
assertStylesMatch(mockedList2)
update()
expect(document.querySelectorAll('style').length).toBe(0)
})
test('addStylesClient (prod)', () => {
const update = addStylesClient('foo', mockedList, true)
assertStylesMatch(mockedList)
const mockedList2 = mockedList.slice(2)
update(mockedList2)
assertStylesMatch(mockedList2)
update()
expect(document.querySelectorAll('style').length).toBe(0)
})
test('addStylesClient (dev + ssr)', () => {
mockSSRTags(mockedList, 'foo')
const update = addStylesClient('foo', mockedList, false)
assertStylesMatch(mockedList)
update()
expect(document.querySelectorAll('style').length).toBe(0)
})
test('addStylesClient (prod + ssr)', () => {
mockProdSSRTags(mockedList, 'foo')
const update = addStylesClient('foo', mockedList, true)
expect(document.querySelectorAll('style').length).toBe(1)
})
test('addStylesServer (dev)', () => {
const context = global.__VUE_SSR_CONTEXT__ = {}
addStylesServer('foo', mockedList, false)
expect(context.styles).toBe(
`` +
`` +
`` +
``
)
})
test('addStylesServer (prod)', () => {
const context = global.__VUE_SSR_CONTEXT__ = {}
addStylesServer('foo', mockedList, true)
expect(context.styles).toBe(
`` +
``
)
})
// --- helpers ---
function assertStylesMatch (list) {
const styles = document.querySelectorAll('style')
expect(styles.length).toBe(list.length)
;[].forEach.call(styles, (style, i) => {
expect(style.textContent.indexOf(list[i][1]) > -1).toBe(true)
})
}
function mockSSRTags (list, parentId) {
list.forEach((item, i) => {
const style = document.createElement('style')
style.setAttribute('data-vue-ssr-id', `${parentId}:${i}`)
style.textContent = item[1]
if (item[2]) {
style.setAttribute('media', item[2])
}
document.head.appendChild(style)
})
}
function mockProdSSRTags (list, parentId) {
const style = document.createElement('style')
style.setAttribute('data-vue-ssr-id', list.map((item, i) => `${parentId}:${i}`).join(' '))
style.textContent = list.map(item => item[1]).join('\n')
document.head.appendChild(style)
}