Lens vs Windmill comparison of testing frameworks
What are the differences between Lens and Windmill?

	Lens https://github.com/spencer-mortensen/lens	Windmill https://pypi.org/project/windmill/
Programming language	PHP	Python
Category	Unit Testing	UI Testing
General info	Lens is a unit-testing framework for PHP Lens is a unit-testing framework for PHP that needs no assertions	Windmill is an Open Source Web UI testing framework for Python Windmill is an Open Source AJAX Web UI testing framework that implements in-browser recording and playback, cross browser testing and test integration
xUnit Set of frameworks originating from SUnit (Smalltalk's testing framework). They share similar structure and functionality.	N/A	No
Client-side Allows testing code execution on the client, such as a web browser	Yes It can test front end components	Yes Its main function is testing of front-end components and functionality
Server-side Allows testing the bahovior of a server-side code	Yes It can test back-end behaviour	No
Fixtures Allows defining a fixed, specific states of data (fixtures) that are test-local. This ensures specific environment for a single test	N/A	N/A
Group fixtures Allows defining a fixed, specific states of data for a group of tests (group-fixtures). This ensures specific environment for a given group of tests.	N/A	N/A
Generators Supports data generators for tests. Data generators generate input data for test. The test is then run for each input data produced in this way.	N/A	Yes By using third party libraries
Licence Licence type governing the use and redistribution of the software	N/A	Apache License 2.0
Mocks Mocks are objects that simulate the behavior of real objects. Using mocks allows testing some part of the code in isolation (with other parts mocked when needed)	N/A	N/A
Grouping Allows organizing tests in groups	N/A	N/A
Other Other useful information about the testing framework