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testUtils.ts
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testUtils.ts
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// test utils used in e2e tests for playgrounds.
// this can be directly imported in any playground tests as 'testUtils', e.g.
// `import { getColor } from 'testUtils'`
import fs from 'fs'
import path from 'path'
import colors from 'css-color-names'
import { ElementHandle } from 'playwright-chromium'
export function slash(p: string): string {
return p.replace(/\\/g, '/')
}
export const isBuild = !!process.env.VITE_TEST_BUILD
const testPath = expect.getState().testPath
const testName = slash(testPath).match(/playground\/([\w-]+)\//)?.[1]
export const testDir = path.resolve(__dirname, '../../temp', testName)
const hexToNameMap: Record<string, string> = {}
Object.keys(colors).forEach((color) => {
hexToNameMap[colors[color]] = color
})
function componentToHex(c: number): string {
const hex = c.toString(16)
return hex.length === 1 ? '0' + hex : hex
}
function rgbToHex(rgb: string): string {
const match = rgb.match(/rgb\((\d+),\s*(\d+),\s*(\d+)\)/)
if (match) {
const [_, rs, gs, bs] = match
return (
'#' +
componentToHex(parseInt(rs, 10)) +
componentToHex(parseInt(gs, 10)) +
componentToHex(parseInt(bs, 10))
)
} else {
return '#000000'
}
}
const timeout = (n: number) => new Promise((r) => setTimeout(r, n))
async function toEl(el: string | ElementHandle): Promise<ElementHandle> {
if (typeof el === 'string') {
return await page.$(el)
}
return el
}
export async function getColor(el: string | ElementHandle) {
el = await toEl(el)
const rgb = await el.evaluate((el) => getComputedStyle(el as Element).color)
return hexToNameMap[rgbToHex(rgb)] || rgb
}
export async function getBg(el: string | ElementHandle) {
el = await toEl(el)
return el.evaluate((el) => getComputedStyle(el as Element).backgroundImage)
}
export function readFile(filename: string) {
return fs.readFileSync(path.resolve(testDir, filename), 'utf-8')
}
export function editFile(
filename: string,
replacer: (str: string) => string,
runInBuild: boolean = false
): void {
if (isBuild && !runInBuild) return
filename = path.resolve(testDir, filename)
const content = fs.readFileSync(filename, 'utf-8')
const modified = replacer(content)
fs.writeFileSync(filename, modified)
}
export function addFile(filename: string, content: string) {
fs.writeFileSync(path.resolve(testDir, filename), content)
}
export function removeFile(filename: string) {
fs.unlinkSync(path.resolve(testDir, filename))
}
export function listAssets(base = '') {
const assetsDir = path.join(testDir, 'dist', base, 'assets')
return fs.readdirSync(assetsDir)
}
export function findAssetFile(match: string | RegExp, base = '') {
const assetsDir = path.join(testDir, 'dist', base, 'assets')
const files = fs.readdirSync(assetsDir)
const file = files.find((file) => {
return file.match(match)
})
return file ? fs.readFileSync(path.resolve(assetsDir, file), 'utf-8') : ''
}
export function readManifest(base = '') {
return JSON.parse(
fs.readFileSync(path.join(testDir, 'dist', base, 'manifest.json'), 'utf-8')
)
}
/**
* Poll a getter until the value it returns includes the expected value.
*/
export async function untilUpdated(
poll: () => string | Promise<string>,
expected: string,
runInBuild = false
) {
if (isBuild && !runInBuild) return
const maxTries = process.env.CI ? 100 : 50
for (let tries = 0; tries < maxTries; tries++) {
const actual = (await poll()) || ''
if (actual.indexOf(expected) > -1 || tries === maxTries - 1) {
expect(actual).toMatch(expected)
break
} else {
await timeout(50)
}
}
}
/**
* Send the rebuild complete message in build watch
*/
export { notifyRebuildComplete } from '../../scripts/jestPerTestSetup'