Visual diff tests for Python
Automate chrome browser render diffs for website testing
Featuring Puppeteer, headless Chrome and Python image diffing
Installation
pip install visualdiff
Usage
Create your tests calling visualdiff.compare(url)
, this
will drive a headless Chrome session rendering the desired URL
and comparing the resulting image with an expected one.
The expectation are stored by default in a visualdiff
subfolder of the
current calling test script.
There are several additional options you can use, we'll see them in the examples
Examples
import visualdiff as vd
assert not vd.difference('https://example.com')
Credits:
- It is a long time that I wanted a tool like this one, but thanks to this article from Monica Dinculescu for finally convincing me.
- Thanks to Mijakogi for the outstanding work on Pyppeteer