Storybook Play Functions

What it does

This skill enables AI agents to generate interactive storybook experiences and automated interaction tests within those stories. It allows you to verify component behavior, simulate user actions, and test edge cases by using “play functions” which run after a story renders. The skill integrates with Testing Library for element queries and interactions, enabling realistic simulations of user behavior.

When to use it

• When testing the functionality of UI components within Storybook stories.
• To automate verification of component behavior in response to user input.
• During visual regression testing workflows.
• For simulating complex user flows and edge cases within a storybook environment.

Key capabilities

• Play Functions: Automated tests that run after a story renders, allowing for simulation of user interactions.
• Testing Library Integration: Leverages Testing Library's within, userEvent, and expect functions for element queries and assertions.
• Realistic User Interaction Simulation: Supports simulating natural typing delays, tabbing between fields, dropdown selections, and other realistic user actions.
• Async Behavior Testing: Provides mechanisms (like waitFor) to handle asynchronous changes within the story.

Example prompts

• "Create a Storybook play function that simulates filling out a login form with valid credentials and verifies successful authentication."
• "Generate an automated test using play functions to check if a search input field displays results after submitting a query."
• "Write a Storybook test to simulate selecting 'United States' from a country dropdown menu."

Tips & gotchas

• Utilize semantic queries (e.g., getByRole) when identifying elements within stories for more robust tests.
• The skill requires familiarity with Testing Library and Jest-compatible assertions.
• Play functions are executed during Storybook viewing, visual regression testing, automated testing runs, and story hot-reloads.