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Unit.js vs Atata comparison of testing frameworks
What are the differences between Unit.js and Atata?

Unit.js

https://unitjs.com/

Atata

https://atata.io/
Programming language

JavaScript

.NET

Category

Unit Testing, End-to-End Testing

General info

An assertion library for JavaScript (similar to chai.js)

It works with any test runner and unit testing framework like Mocha, Jasmine, Karma, protractor (E2E test framework for Angular apps) and QUnit.

Atata is a C# / .NET test automation framework for web

Atata is an open source test framework that uses fluent object pattern. It consists of the following concepts: components (controls and page objects), attributes of the control search, settings attributes, triggers, verification attributes and methods
xUnit
Set of frameworks originating from SUnit (Smalltalk's testing framework). They share similar structure and functionality.

Yes

You can use Atata with xUnit frameworks
Client-side
Allows testing code execution on the client, such as a web browser

Yes

Unit.js runs in the browser to test front-end components

Yes

Atata is based on selenium and is used for browser automation. You can test various front-end functionalities and behaviours
Server-side
Allows testing the bahovior of a server-side code

Yes

Unit.js runs in nodejs to test server-side behaviour

No

Fixtures
Allows defining a fixed, specific states of data (fixtures) that are test-local. This ensures specific environment for a single test

Yes

Unit.js provides Test fixtures for running testsThis is one of its features

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.

Yes

With Unit.js you can group your 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.

Licence
Licence type governing the use and redistribution of the software

GNU

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

Grouping
Allows organizing tests in groups

N/A

Other
Other useful information about the testing framework