Component Testing with Storybook

1. Introduction

Component testing is a crucial part of the development process, especially in component-driven development. This lesson will guide you through using Storybook for component testing.

2. What is Storybook?

Storybook is an open-source tool for developing UI components in isolation. It allows you to create, manage, and test components outside of your app.

Key Features of Storybook:

• Component isolation
• Interactive UI development
• Documentation generation
• Automated testing capabilities

3. Setting Up Storybook

To set up Storybook for your project, follow these steps:

1. Navigate to your project directory.
2. Run the following command to install Storybook:

   npx sb init

3. Start Storybook:

   npm run storybook

4. Creating a Component

Let's create a simple button component. First, create a file named Button.js in your components directory.

import React from 'react';

export const Button = ({ label, onClick }) => {
    return (
        
            {label}
        
    );
};

5. Writing Tests

To test your button component, create a file named Button.stories.js.

import React from 'react';
import { Button } from './Button';

export default {
    title: 'Example/Button',
    component: Button,
};

const Template = (args) => ;

// Default button
export const Default = Template.bind({});
Default.args = {
    label: 'Click me!',
};

// Primary button
export const Primary = Template.bind({});
Primary.args = {
    label: 'Primary Button',
};

6. Best Practices

Adhere to the following best practices when using Storybook for component testing:

• Write clear, descriptive stories for each component.
• Use controls to adjust component properties dynamically.
• Document component usage and variations.
• Integrate testing tools like Jest with Storybook.

7. FAQ