Sleipnir vs Vows comparison of testing frameworks
What are the differences between Sleipnir and Vows?

Sleipnir

https://github.com/railsware/Sleipnir

Vows

http://vowsjs.org/
Programming language

Swift

JavaScript

Category

Unit Testing, Acceptance Testing

Functional Testing, Asynchronous Testing

General info

Sleipnir is a BDD-style framework for Swift

Sleipnir is a pure Swift BDD testing framework inspired by cedar, that is not dependent on NSObject, and does not use XCTest. Sleipnir has nice command line output and support for custom test reporters and other features, like seeded random tests invocation, focused and excluded examples/groups

Vows is a testing framework for NodeJS applications.

Vows supports Asynchronous BDD & continuous testing for two reasons first, reason is that node.js is asynchronous, and therefore our tests need to be, second,is to make test suites which target I/O libraries run much faster.
xUnit
Set of frameworks originating from SUnit (Smalltalk's testing framework). They share similar structure and functionality.

N/A

No

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

Yes

You can test front-end behaviour by defining specifications for classes, objects and functions

No

Server-side
Allows testing the bahovior of a server-side code

Yes

You can test back-end behaviour by defining specifications for classes, objects and functions in the back-end

Yes

Since it specifically tests Nodejs it tests back-end components and other server-side behaviours and functions
Fixtures
Allows defining a fixed, specific states of data (fixtures) that are test-local. This ensures specific environment for a single test

Yes

Fixtures are available by using beforeEach{ } and afterEach{ } to setup the test parameters

No

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

Group fixtures are available through the beforeAll{} and afterAll{} blocks to setup group fixtures

No

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

Yes, developers can create mock objects with sleipnir using a third party library like Cuckoo.

Grouping
Allows organizing tests in groups

Yes

You can declare example groups with Slepnir

Other
Other useful information about the testing framework