JSSpec vs XCTest comparison of testing frameworks
What are the differences between JSSpec and XCTest?

JSSpec

https://github.com/jsspec/jsspec

XCTest

https://developer.apple.com/documentation/xctest
Programming language

JavaScript

Swift

Category

Unit Testing

Unit Testing, Performance Testing

General info

Javascript BDD (Behaviour Driven Development) based test runner/framework

Contextualised spec runner for JavaScript in the flavour of RSpec (Ruby Spec runner). JSSpec has got 2 really powerful features which helps you to make unit testing easier: 1) Shared examples 2) Shared contexts

XCTest is the default testing framework for unit tests, performance tests, and some level of UI tests for iOS apps.

XCTest framework is a testing framework that enables developers write basic unit tests, performance tests, and some level of UI tests for iOS apps.
xUnit
Set of frameworks originating from SUnit (Smalltalk's testing framework). They share similar structure and functionality.

No

Yes

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

Yes

JSSpec is primarily used for testing front-end/client-side components and functionality

Yes

Developers can test individual front-end components with XCTest
Server-side
Allows testing the bahovior of a server-side code

No

Yes

Yes, developers can test individual back-end components with XCTest
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

XCTest contains setup() and teardown() fixture methods 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

Group fixtures are available in XCTest
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

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)

Yes

It has a module doubles (mocks/spies) for mocking and spying

Yes

You can create protocol mocks and class mocks with libraries such as MockFive or Cuckoo
Grouping
Allows organizing tests in groups

N/A

Yes

Developers can define test suites from the XCTestSuite class
Other
Other useful information about the testing framework