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

Windmill

https://pypi.org/project/windmill/

Arquillian

http://arquillian.org/
Programming language

Python

Java

Category

UI Testing

Intergration Testing, Functional Testing

General info

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

Arquillian is an Open source framework for writing Integration and functional tests

Arquilian comes bundled with many extra tools such as Arquillian graphene, Drone and Selenium to write tests to the visual layer as well
xUnit
Set of frameworks originating from SUnit (Smalltalk's testing framework). They share similar structure and functionality.

No

Yes

It is a xUnit framework
Client-side
Allows testing code execution on the client, such as a web browser

Yes

Its main function is testing of front-end components and functionality

Yes

You can perform unit tests on front-end components and functionality
Server-side
Allows testing the bahovior of a server-side code

No

Yes

You can unit tests on back-end behaviours and functionalities by testing specific back-end classes and functions
Fixtures
Allows defining a fixed, specific states of data (fixtures) that are test-local. This ensures specific environment for a single test

N/A

Yes

By use of extensions, for example you can use the Persistence extension to set database fixtures
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

Yes

You can define group fixtures
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.

Yes

By using third party libraries

N/A

Licence
Licence type governing the use and redistribution of the software

Apache License 2.0

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

Yes

Arquillian supports mock object functionality you can use third party libraries
Grouping
Allows organizing tests in groups

N/A

Yes

Arquilian supports grouping of tests
Other
Other useful information about the testing framework