In this blog post I want to show how to set up automated screenshot comparison tests with a headless Chrome browser, using Puppeteer and Pixelmatch, in a Bitbucket pipeline. A simple react application will be used to test.
Screenshots are taken using Puppeteer and a headless Chrome browser. The screenshots are compared with baseline images using Pixelmatch and a simple helper function. If the actual screenshot matches the baseline image, the test succeeds, otherwise it fails. The react application under test uses a rest backend (which is mocked in the pipeline).
In the end of the blog post, you’ll find a link to a Github repository that contains a working example of the setup.Continue reading “Automated screenshot comparison tests with headless Chrome, Puppeteer and Pixelmatch, in Bitbucket pipeline”