Unity Test Framework

Test Framework Overview

The Unity Test Framework (UTF) is Unity's built-in testing solution, integrating a custom version of NUnit (based on NUnit 3.5) adapted for Unity. It enables testing C# code in Edit Mode, Play Mode, and on target platforms (Standalone, Android, iOS).

UTF extends NUnit with Unity-specific attributes ([UnityTest], [UnitySetUp], [UnityTearDown]) that support coroutines, yield instructions, and frame-based execution.

Key capabilities:

• Edit Mode tests for editor extensions and pure logic
• Play Mode tests for gameplay, physics, and coroutine-based code
• Standalone player test builds for platform-specific validation
• Command-line execution for CI/CD pipelines
• NUnit XML result output

Source: Unity Test Framework 2.0 Manual