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Wallaby vs wru comparison of testing frameworks
What are the differences between Wallaby and wru?

Wallaby

https://github.com/elixir-wallaby/wallaby

wru

https://github.com/WebReflection/wru
Programming language

Elixir

JavaScript

Category

Intergration Testing, Browser Automation

Unit Testing

General info

Library for end-to-end intergration testing for Elixir apps

Wallaby supports concurrent feature testing (i.e multiple tests can run concurrently) as well as browser management

wru is an essential general purpose test framework compatible with web environment, node.js, Rhino, and now PhantomJS too.

wru is compatible with basically all possible browsers out there included IE5.5, IE6, IE7, IE8, IE9, IE10, Chrome, Firefox, Safari, Webkit based, Mobile Browsers, and Opera. On server side wru is compatible with latest node.js, Rhino, PhantomJS, and JavaScriptCore versions.
xUnit
Set of frameworks originating from SUnit (Smalltalk's testing framework). They share similar structure and functionality.

No

Yes

Wru is compatible with xUnit
Client-side
Allows testing code execution on the client, such as a web browser

Yes

It works well for automated E2E testing; Wallaby also has an experimental Chrome Driver that works well

Yes

Wru tests front-end components and functions, it is compatible with HTML and runs on probably all browsers
Server-side
Allows testing the bahovior of a server-side code

N/A

Yes

It is used to test back-end components and behaviour and runs in server environments
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

N/A

Licence
Licence type governing the use and redistribution of the software

MIT License

MIT License

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)

Yes

Available through third party libraries like Mock and Mockery

You can implement your stubs and mocks using a wru.assert(...) when necessary during a specific test.
Grouping
Allows organizing tests in groups

N/A

N/A

Other
Other useful information about the testing framework