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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | 3x 2x 1x 1x 1x 1x 1x 1x | /**
*
* Save a screenshot of the current browsing context to a PNG file on your OS. Be aware that
* some browser drivers take screenshots of the whole document (e.g. Geckodriver with Firefox)
* and others only of the current viewport (e.g. Chromedriver with Chrome).
*
* <example>
:saveScreenshot.js
it('should save a screenshot of the browser view', function () {
browser.saveScreenshot('./some/path/screenshot.png');
});
* </example>
*
* @alias browser.saveScreenshot
* @param {String} filepath path to the generated image (`.png` suffix is required) relative to the execution directory
* @return {Buffer} screenshot buffer
* @type utility
*
*/
import fs from 'fs'
import { Buffer } from 'safe-buffer'
import { getAbsoluteFilepath, assertDirectoryExists } from '../../utils'
export default async function saveScreenshot (filepath) {
/**
* type check
*/
if (typeof filepath !== 'string' || !filepath.endsWith('.png')) {
throw new Error('saveScreenshot expects a filepath of type string and ".png" file ending')
}
const absoluteFilepath = getAbsoluteFilepath(filepath)
assertDirectoryExists(absoluteFilepath)
const screenBuffer = await this.takeScreenshot()
const screenshot = Buffer.from(screenBuffer, 'base64')
fs.writeFileSync(absoluteFilepath, screenshot)
return screenshot
}
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