Interactive Component Testing

1. Introduction

Interactive component testing is a crucial practice in component-driven development, allowing developers to check the functionality and usability of UI components in isolation. It ensures that components behave as expected under various conditions and enhances the overall quality of the application.

2. Key Concepts

3. Preparation

Before starting interactive testing, ensure the following:

• Components are developed and documented in Storybook.
• Testing framework (e.g., Jest, Testing Library) is set up.
• Storybook is running and accessible.

4. Testing Process

Follow these steps to conduct interactive component testing:

1. Access the Storybook: Open your Storybook instance and select the component to test.
2. Interact with the Component: Simulate user interactions such as clicks and text input.
3. Observe Behavior: Check if the component responds correctly to interactions.
4. Assert Outcomes: Use assertions to verify the expected outcomes based on interactions.
5. Document Findings: Record any issues or unexpected behaviors for further investigation.

import { render, fireEvent } from '@testing-library/react';
import MyButton from './MyButton';

test('it triggers action on click', () => {
    const { getByText } = render();
    fireEvent.click(getByText('Click Me'));
    expect(someMockFunction).toHaveBeenCalled();
});

5. Best Practices

Consider the following best practices for effective interactive component testing:

• Test components in isolation.
• Cover all possible states of the component (e.g., loading, error).
• Use descriptive names for test cases and assertions.
• Keep tests fast and focused on specific interactions.
• Regularly update tests as components evolve.

6. FAQ