Create Mocktail-based test doubles for Dart and Flutter tests.
npx skills add https://github.com/NNPopov/movie-theater-tickets --skill mocktail-nnpopov
Please help me install this Agent Skill. Skill: mocktail Source: https://github.com/NNPopov/movie-theater-tickets/tree/main/src/clients/.claude/skills/mocktail Command: npx skills add https://github.com/NNPopov/movie-theater-tickets --skill mocktail-nnpopov
Mocktail makes it easier to isolate Dart and Flutter code in tests when you need controllable stand-ins for services, repositories, events, or other collaborators. It helps you choose between real objects, lightweight fakes, and verifiable mocks without relying on code generation.
Use the mocktail skill to create the needed test double, register any custom fallback values, stub the expected calls, and verify the interactions in your Dart or Flutter test.
High-intent search queries and answers about installing and using this skill.
Mocking Dart classes for Flutter testing without code generation requires creating noSuchMethod-based mock classes, allowing you to isolate services and repositories using explicit stubs instead of build runners.
Choosing between a mock and a fake object in Dart tests depends on your goal: use verifiable mocks to check interactions and call arguments, and lightweight fakes for simple domain objects or scenarios needing controllable stand-ins.
Registering fallback values for custom matchers in Dart tests is necessary so argument matchers can work with non-nullable types, providing the placeholders required when stubbing calls that involve custom parameter types.
Stubbing async calls and verifying interactions in a Dart booking flow involves defining return values, setting async answers, and checking that the reservation service was called with the expected seat data.
Argument matching with named parameters in Flutter tests is fully supported, allowing you to specify expected calls, register fallback values for custom types, and verify interactions accurately.
The best way to isolate external services in Dart and Flutter tests is to use mocktail-based test doubles, picking the simplest stand-in that fits your scenario to control service behavior and verify interactions.
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