Godot
GUT (Godot Unit Test) is the de-facto testing framework for Godot projects, and Godot 4 brought significant changes to GDScript that affect how you write and structure tests. If you've gone through the GUT getting-started tutorials and written basic assert_eq tests, this guide covers the
Game Development
Godot uses GUT (third-party, community-maintained), while Unity ships with its own Test Framework (built-in, supported by Unity Technologies). Both enable unit and integration testing of game code, but they differ in setup complexity, CI/CD integration, test isolation, and framework maturity. This comparison helps you understand the
Game Development
Integration tests in Godot verify that multiple nodes, scenes, and autoloads work together correctly. Unlike unit tests that test a single script, integration tests instantiate real scenes, trigger real signals, and assert on the resulting state. GUT supports this with add_child_autoqfree(), scene instantiation helpers, and frame-await utilities.
Game Development
Godot 4 runs headlessly with --headless — no display required in CI. Combined with GUT's CLI runner, you can run your full test suite in GitHub Actions on every push. This guide covers setting up the CI pipeline, caching the Godot binary, running GUT tests, and reporting results. Key
Game Development
Beyond basic assertions, GUT provides mock objects, spy capabilities, and signal testing that let you isolate and verify complex game behavior. This guide covers GUT's advanced features: creating doubles (mocks/stubs), asserting method calls, testing signal emissions, and testing scene interactions in GDScript. Key Takeaways GUT doubles (mocks)
Game Development
GUT (Godot Unit Test) is the de facto unit testing framework for Godot games. It integrates directly into the Godot editor, lets you write tests in GDScript alongside your game code, and runs headlessly for CI pipelines. This guide covers installation, writing your first tests, and the assertion API. Key