Generate and verify mocks in Flutter/Dart tests with Mockito.
npx skills add https://github.com/evanca/flutter-ai-rules --skill mockito
Please help me install this Agent Skill. Skill: mockito Source: https://github.com/evanca/flutter-ai-rules/tree/main/skills/mockito Command: npx skills add https://github.com/evanca/flutter-ai-rules --skill mockito
Managing mocks and stubs in Flutter/Dart tests manually is error-prone and repetitive. Mockito provides a structured way to generate mocks, verify interactions, and capture arguments, reducing boilerplate and increasing test reliability.
Annotate your test class with @GenerateMocks([YourClass, AnotherClass]) and run dart run build_runner build to generate the mock classes.
High-intent search queries and answers about installing and using this skill.
To generate mocks for Flutter unit tests, annotate your test file with @GenerateMocks and run dart run build_runner build. This process creates mock classes that enable controlled behavior and interaction verification for your Dart dependencies.
You verify interactions and capture arguments in Dart Mockito tests using the verify and capture utilities. These features allow you to assert method usage and extract call arguments across multiple synchronous and asynchronous test flows.
Yes, Mockito works with asynchronous Flutter widget tests by providing dedicated async support. It allows you to stub return values and verify interactions for dependencies that execute across both synchronous and asynchronous test flows.
You should use mocks instead of real or fake implementations in Dart testing primarily when you need interaction verification and behavior stubbing. Prefer real or fake implementations whenever possible to increase test reliability and reduce boilerplate.
You reset mock state between Flutter tests using the reset and clearInteractions utilities. These test utilities clear stubbed behaviors and recorded interactions, ensuring a clean and isolated testing environment for each subsequent test run.
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