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MSTest vs Kotest comparison of testing frameworks
What are the differences between MSTest and Kotest?

MSTest

https://github.com/microsoft/testfx-docs

Kotest

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

.NET

Kotlin

Category

Unit Testing

Unit Testing

General info

MSTest is a Unit testing framework for the .net framework

MSTest is fully integrated with Visual Studios and works natively without the need for any plugins. MSTest is better suited for only using Microsoft technologies rather than mixed technology environments.

kotest is a powerful, elegant and flexible test framework for Kotlin, formerly known as kotlintest

Kotest has excellent support for data driven testing or table driven testing where it has the ability to quickly rerun the same test over and over with a predefined set of inputs and expected values
xUnit
Set of frameworks originating from SUnit (Smalltalk's testing framework). They share similar structure and functionality.

Yes

MsTest is an xUnit type framework

No

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

Yes

MsTest can test various front-end components

Yes

You can test front-end components with kotest
Server-side
Allows testing the bahovior of a server-side code

Yes

With MSTest you can test various back-end components individually

Yes

Yes, you can test back-end components with kotest
Fixtures
Allows defining a fixed, specific states of data (fixtures) that are test-local. This ensures specific environment for a single test

Yes

MSTest contains fixture methods TestInitialize to setup your environment and TestCleanup to destroy the test environment

Yes

kotest contains fixtures, that is the setup / teardown functions
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

Yes

kotest has group fixtures available
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

Creative Commons Attribution 3.0 International Public 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

You can create mock objects using the third party library moq

Yes

You can use a third party library like mockk to create mocks
Grouping
Allows organizing tests in groups

Yes

Grouping of tests into suites is possible with MSTest

Yes

You can create test suites with kotest
Other
Other useful information about the testing framework