React Storybook

React를 위한 Storybook 튜토리얼

Storybook은 CDD를 하기 위한 개발도구이다.

컴포넌트를 모듈 단위로 개발하여 사용자 인터페이스(UI) 구축에 도달하는 개발 및 설계 방법론입니다. 기본적인 컴포넌트 단위부터 시작하여 UI 뷰(view)를 구성하기 위해 점진적으로 결합(조립)해가는 상향적(bottom-up) 성향을 띕니다.

간단한 예시 및 설치

# Create our application:
npx create-react-app taskbox

cd taskbox

# Add Storybook:
npx -p @storybook/cli sb init

# Run the test runner (Jest) in a terminal:
yarn test --watchAll

# Start the component explorer on port 6006:
yarn storybook

# Run the frontend app proper on port 3000:
yarn start

// src/components/Task.js

import React from 'react';

export default function Task({ task: { id, title, state }, onArchiveTask, onPinTask }) {
  return (
    <div className="list-item">
      <input type="text" value={title} readOnly={true} />
    </div>
  );
}

// src/components/Task.stories.js

import React from 'react';

import Task from './Task';

export default {
  component: Task,
  title: 'Task',
};

const Template = args => <Task {...args} />;

export const Default = Template.bind({});
Default.args = {
  task: {
    id: '1',
    title: 'Test Task',
    state: 'TASK_INBOX',
    updatedAt: new Date(2018, 0, 1, 9, 0),
  },
};

export const Pinned = Template.bind({});
Pinned.args = {
  task: {
    ...Default.args.task,
    state: 'TASK_PINNED',
  },
};

export const Archived = Template.bind({});
Archived.args = {
  task: {
    ...Default.args.task,
    state: 'TASK_ARCHIVED',
  },
};

// .storybook/main.js

module.exports = {
  //👇 Location of our stories
  stories: ['../src/components/**/*.stories.js'],
  addons: [
    '@storybook/addon-links',
    '@storybook/addon-essentials',
    '@storybook/preset-create-react-app',
  ],
};

// .storybook/preview.js

import '../src/index.css'; //👈 The app's CSS file goes here

//👇 Configures Storybook to log the actions( onArchiveTask and onPinTask ) in the UI.
export const parameters = {
  actions: { argTypesRegex: '^on[A-Z].*' },
};

// .storybook/main.js

module.exports = {
  //👇 Location of our stories
  stories: ['../src/components/**/*.stories.js'],
  addons: [
    '@storybook/addon-links',
    '@storybook/addon-essentials',
    '@storybook/preset-create-react-app',
  ],
};

// src/components/Task.js

import React from 'react';
import PropTypes from 'prop-types';

export default function Task({ task: { id, title, state }, onArchiveTask, onPinTask }) {
  // ...
}

Task.propTypes = {
  /** Composition of the task */
  task: PropTypes.shape({
    /** Id of the task */
    id: PropTypes.string.isRequired,
    /** Title of the task */
    title: PropTypes.string.isRequired,
    /** Current state of the task */
    state: PropTypes.string.isRequired,
  }),
  /** Event to change the task to archived */
  onArchiveTask: PropTypes.func,
  /** Event to change the task to pinned */
  onPinTask: PropTypes.func,
};

yarn add -D @storybook/addon-storyshots react-test-renderer

// src/storybook.test.js

import initStoryshots from '@storybook/addon-storyshots';
initStoryshots();

// src/components/TaskList.js

import React from 'react';

import Task from './Task';

export default function TaskList({ loading, tasks, onPinTask, onArchiveTask }) {
  const events = {
    onPinTask,
    onArchiveTask,
  };

  if (loading) {
    return <div className="list-items">loading</div>;
  }

  if (tasks.length === 0) {
    return <div className="list-items">empty</div>;
  }

  return (
    <div className="list-items">
      {tasks.map(task => (
        <Task key={task.id} task={task} {...events} />
      ))}
    </div>
  );
}

// src/components/TaskList.stories.js

import React from 'react';

import TaskList from './TaskList';
import * as TaskStories from './Task.stories';

export default {
  component: TaskList,
  title: 'TaskList',
  decorators: [story => <div style={{ padding: '3rem' }}>{story()}</div>],
};

const Template = args => <TaskList {...args} />;

export const Default = Template.bind({});
Default.args = {
  // Shaping the stories through args composition.
  // The data was inherited from the Default story in task.stories.js.
  tasks: [
    { ...TaskStories.Default.args.task, id: '1', title: 'Task 1' },
    { ...TaskStories.Default.args.task, id: '2', title: 'Task 2' },
    { ...TaskStories.Default.args.task, id: '3', title: 'Task 3' },
    { ...TaskStories.Default.args.task, id: '4', title: 'Task 4' },
    { ...TaskStories.Default.args.task, id: '5', title: 'Task 5' },
    { ...TaskStories.Default.args.task, id: '6', title: 'Task 6' },
  ],
};

export const WithPinnedTasks = Template.bind({});
WithPinnedTasks.args = {
  // Shaping the stories through args composition.
  // Inherited data coming from the Default story.
  tasks: [
    ...Default.args.tasks.slice(0, 5),
    { id: '6', title: 'Task 6 (pinned)', state: 'TASK_PINNED' },
  ],
};

export const Loading = Template.bind({});
Loading.args = {
  tasks: [],
  loading: true,
};

export const Empty = Template.bind({});
Empty.args = {
  // Shaping the stories through args composition.
  // Inherited data coming from the Loading story.
  ...Loading.args,
  loading: false,
};

결론

styled 와 storybook을 함께 사용하여 CDD 완성

https://storybook.js.org/tutorials/intro-to-storybook/react/ko/simple-component/