testdouble.js vs Quick comparison of testing frameworks
What are the differences between testdouble.js and Quick?

testdouble.js

https://github.com/testdouble/testdouble.js

Quick

https://github.com/quick/quick
Programming language

JavaScript

Swift

Category

Unit Testing, Intergration Testing

Acceptance Testing, Unit Testing

General info

This library was designed to work for both Node.js and browser interpreters and it encourages the TDD (Test Driven Development)

Test doubles can be used with conjuction of other test frameworks such as Jasmine, Jest, Chai, QUnit, Mocha, Tape etc.

Quick is a Swift (and Objective-C) testing framework.

Quick is a behavior-driven development framework for Swift and Objective-C that is inspired by RSpec, Specta, and Ginkgo. Quick comes bundled with Nimble a matcher framework for your tests.
xUnit
Set of frameworks originating from SUnit (Smalltalk's testing framework). They share similar structure and functionality.

Yes

It is compatible with xUnit and supportsxUnit XML output

Yes

Yes, it is an xUnit style test framework
Client-side
Allows testing code execution on the client, such as a web browser

No

Yes

Developers can test front-end behaviour and components by defining front-end feature specifications
Server-side
Allows testing the bahovior of a server-side code

Yes

Testdouble is primarily used to test server-side functions, behaviours and components

Yes

Developers can test back-end behaviour and components by defining back-end feature specifications
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

Quick contains fixture methods setup() and teardown() for setting up and destroying test environments
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

Yes, example groups (logical groupings of examples/tests) can share setup and teardown code
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

Licence
Licence type governing the use and redistribution of the software

MIT License

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)

Yes

Testdouble includes inbuilt support for mocking

Yes

Yes, developers can create mock objects with Quick using the Cuckoo library
Grouping
Allows organizing tests in groups

N/A

Yes

In Quick test suites are named Specs, and every test suite you create starts off with a class inheriting from QuickSpec includes a main method, spec() which contains all the test cases.
Other
Other useful information about the testing framework