TestNG, written by Cedric Beust and Alexandru Popescu, is a light framework based on Java annotations (for J2SE 5.0) that allows you to design complex unit testing for J2SE 5.0 and J2SE 1.4.

Let me be clear about the new .NET Core testing framework, xUnit: It's an alternative, not a replacement for MSTest, the .NET Core version of the framework you're familiar with from earlier versions ...

Google’s Container Structure Test framework supports four different types of unit level tests for Docker containers, command tests, file existence tests, file content tests and metadata tests.