.NET Testing

Framework Choice

• Preserve the project's existing test framework, mocking library, assertion style, and fixture conventions.
• Use NUnit when the project has not established a test-framework alternative.
• When a test needs a mocking library and the project has not established one, use Moq.
• Treat explicit project instructions as overrides of these defaults.
• Add Moq only when a test needs a behavioral collaborator whose response or interaction must be controlled or verified.
• Do not add a separate assertion package merely to express a preferred style.
• Keep MAUI UI automation in separate projects under maui-ui-testing.

Default Heuristics