nose2

nose2 is a successor to the nose testing framework for Python. It aims to provide a modern and extensible test runner with improved features and a more consistent API. Nose2 is designed to be a drop-in replacement for nose where possible, offering compatibility with existing nose plugins and tests.

The primary goal of nose2 is to simplify the process of writing and running tests in Python projects. It automatically discovers tests within a project, allowing developers to organize their code without needing explicit registration of test files or functions. Nose2 supports various test discovery mechanisms, including unittest-style test classes, plain functions prefixed with 'test_', and doctests.

One of nose2's key strengths is its plugin architecture. This allows for customization and extension of its functionality. Developers can create or use existing plugins to add support for new testing paradigms, integrate with other tools, or modify the test execution process. Common plugins include those for code coverage, parallel test execution, and custom assertion libraries.

Nose2 also emphasizes a clean and straightforward command-line interface. It provides options for controlling test discovery, filtering tests, specifying output formats, and generating reports. The framework is actively maintained and continues to evolve, aiming to keep pace with modern Python development practices and testing needs. It is a popular choice for projects seeking a robust and flexible testing solution.