Toolbar

ボタン、トグルボタン、チェックボックスなどのコントロールセットをグループ化するコンテナ。

React Vue Svelte Astro

デモ

テキスト書式設定ツールバー

トグルボタンと通常ボタンを含む水平ツールバー。

垂直ツールバー

上下矢印キーでナビゲートできます。

無効化されたアイテムを含む

無効化されたアイテムはキーボードナビゲーション時にスキップされます。

制御されたトグルボタン

制御された状態を持つトグルボタン。現在の状態が表示され、サンプルテキストに適用されます。

Current state: {"bold":false,"italic":false,"underline":false}

Sample text with applied formatting

デフォルトの押下状態

defaultPressedで初期状態を設定したトグルボタン（無効化状態を含む）。

デモのみを開く →

アクセシビリティ

WAI-ARIA Roles

Role	Target Element	Description
`toolbar`	Container	Container for grouping controls
`button`	Button elements	Implicit role for `<button>` elements
`separator`	Separator	Visual and semantic separator between groups

WAI-ARIA toolbar role (opens in new tab)

WAI-ARIA Properties

Attribute	Target	Values	Required	Configuration
`aria-label`	toolbar	String	Yes*	`aria-label` prop
`aria-labelledby`	toolbar	ID reference	Yes*	`aria-labelledby` prop
`aria-orientation`	toolbar	`"horizontal"` \| `"vertical"`	No	`orientation` prop (default: horizontal)

* Either aria-label or aria-labelledby is required

WAI-ARIA States

`aria-pressed`

Indicates the pressed state of toggle buttons.

Target	ToolbarToggleButton
Values	`true` \| `false`
Required	Yes (for toggle buttons)
Change Trigger	Click, Enter, Space
Reference	aria-pressed (opens in new tab)

Keyboard Support

Key	Action
`Tab`	Move focus into/out of the toolbar (single tab stop)
`Arrow Right` / `Arrow Left`	Navigate between controls (horizontal toolbar)
`Arrow Down` / `Arrow Up`	Navigate between controls (vertical toolbar)
`Home`	Move focus to first control
`End`	Move focus to last control
`Enter` / `Space`	Activate button / toggle pressed state

Focus Management

This component uses the Roving Tabindex pattern for focus management:

Only one control has tabindex="0" at a time
Other controls have tabindex="-1"
Arrow keys move focus between controls
Disabled controls and separators are skipped
Focus does not wrap (stops at edges)

ソースコード

Toolbar.tsx

import { createContext, useCallback, useContext, useEffect, useRef, useState } from 'react';

/**
 * Toolbar context for managing focus state
 */
interface ToolbarContextValue {
  orientation: 'horizontal' | 'vertical';
}

// Default context value for SSR compatibility
const defaultContext: ToolbarContextValue = {
  orientation: 'horizontal',
};

const ToolbarContext = createContext<ToolbarContextValue>(defaultContext);

function useToolbarContext() {
  return useContext(ToolbarContext);
}

/**
 * Props for the Toolbar component
 * @see https://www.w3.org/WAI/ARIA/apg/patterns/toolbar/
 */
export interface ToolbarProps extends Omit<React.HTMLAttributes<HTMLDivElement>, 'role'> {
  /** Direction of the toolbar */
  orientation?: 'horizontal' | 'vertical';
  /** Child elements (ToolbarButton, ToolbarToggleButton, ToolbarSeparator) */
  children: React.ReactNode;
}

/**
 * Toolbar container component implementing WAI-ARIA Toolbar pattern
 *
 * @example
 * ```tsx
 * <Toolbar aria-label="Text formatting">
 *   <ToolbarToggleButton>Bold</ToolbarToggleButton>
 *   <ToolbarToggleButton>Italic</ToolbarToggleButton>
 *   <ToolbarSeparator />
 *   <ToolbarButton>Copy</ToolbarButton>
 * </Toolbar>
 * ```
 */
export function Toolbar({
  orientation = 'horizontal',
  children,
  className = '',
  onKeyDown,
  ...props
}: ToolbarProps): React.ReactElement {
  const toolbarRef = useRef<HTMLDivElement>(null);
  const [focusedIndex, setFocusedIndex] = useState(0);

  const getButtons = useCallback((): HTMLButtonElement[] => {
    if (!toolbarRef.current) return [];
    return Array.from(
      toolbarRef.current.querySelectorAll<HTMLButtonElement>('button:not([disabled])')
    );
  }, []);

  const handleKeyDown = useCallback(
    (event: React.KeyboardEvent<HTMLDivElement>) => {
      const buttons = getButtons();
      if (buttons.length === 0) return;

      const currentIndex = buttons.findIndex((btn) => btn === document.activeElement);
      if (currentIndex === -1) return;

      const nextKey = orientation === 'vertical' ? 'ArrowDown' : 'ArrowRight';
      const prevKey = orientation === 'vertical' ? 'ArrowUp' : 'ArrowLeft';
      const invalidKeys =
        orientation === 'vertical' ? ['ArrowLeft', 'ArrowRight'] : ['ArrowUp', 'ArrowDown'];

      // Ignore invalid direction keys
      if (invalidKeys.includes(event.key)) {
        return;
      }

      let newIndex = currentIndex;
      let shouldPreventDefault = false;

      switch (event.key) {
        case nextKey:
          // No wrap - stop at end
          if (currentIndex < buttons.length - 1) {
            newIndex = currentIndex + 1;
          }
          shouldPreventDefault = true;
          break;

        case prevKey:
          // No wrap - stop at start
          if (currentIndex > 0) {
            newIndex = currentIndex - 1;
          }
          shouldPreventDefault = true;
          break;

        case 'Home':
          newIndex = 0;
          shouldPreventDefault = true;
          break;

        case 'End':
          newIndex = buttons.length - 1;
          shouldPreventDefault = true;
          break;
      }

      if (shouldPreventDefault) {
        event.preventDefault();
        if (newIndex !== currentIndex) {
          buttons[newIndex].focus();
          setFocusedIndex(newIndex);
        }
      }

      onKeyDown?.(event);
    },
    [orientation, getButtons, onKeyDown]
  );

  const handleFocus = useCallback(
    (event: React.FocusEvent<HTMLDivElement>) => {
      const { target } = event;
      if (!(target instanceof HTMLButtonElement)) return;

      const buttons = getButtons();
      const targetIndex = buttons.findIndex((btn) => btn === target);
      if (targetIndex !== -1) {
        setFocusedIndex(targetIndex);
      }
    },
    [getButtons]
  );

  // Roving tabindex: only the focused button should have tabIndex=0
  useEffect(() => {
    const buttons = getButtons();
    if (buttons.length === 0) return;

    // Clamp focusedIndex to valid range
    const validIndex = Math.min(focusedIndex, buttons.length - 1);
    if (validIndex !== focusedIndex) {
      setFocusedIndex(validIndex);
      return; // Will re-run with corrected index
    }

    buttons.forEach((btn, index) => {
      btn.tabIndex = index === focusedIndex ? 0 : -1;
    });
  }, [focusedIndex, getButtons, children]);

  return (
    <ToolbarContext.Provider value={{ orientation }}>
      <div
        ref={toolbarRef}
        role="toolbar"
        aria-orientation={orientation}
        className={`apg-toolbar ${className}`.trim()}
        onKeyDown={handleKeyDown}
        onFocus={handleFocus}
        {...props}
      >
        {children}
      </div>
    </ToolbarContext.Provider>
  );
}

/**
 * Props for the ToolbarButton component
 */
export interface ToolbarButtonProps extends Omit<
  React.ButtonHTMLAttributes<HTMLButtonElement>,
  'type'
> {
  /** Button content */
  children: React.ReactNode;
}

/**
 * Button component for use within a Toolbar
 */
export function ToolbarButton({
  children,
  className = '',
  disabled,
  ...props
}: ToolbarButtonProps): React.ReactElement {
  // Verify we're inside a Toolbar
  useToolbarContext();

  return (
    <button
      type="button"
      className={`apg-toolbar-button ${className}`.trim()}
      disabled={disabled}
      {...props}
    >
      {children}
    </button>
  );
}

/**
 * Props for the ToolbarToggleButton component
 */
export interface ToolbarToggleButtonProps extends Omit<
  React.ButtonHTMLAttributes<HTMLButtonElement>,
  'type' | 'aria-pressed'
> {
  /** Controlled pressed state */
  pressed?: boolean;
  /** Default pressed state (uncontrolled) */
  defaultPressed?: boolean;
  /** Callback when pressed state changes */
  onPressedChange?: (pressed: boolean) => void;
  /** Button content */
  children: React.ReactNode;
}

/**
 * Toggle button component for use within a Toolbar
 */
export function ToolbarToggleButton({
  pressed: controlledPressed,
  defaultPressed = false,
  onPressedChange,
  children,
  className = '',
  disabled,
  onClick,
  ...props
}: ToolbarToggleButtonProps): React.ReactElement {
  // Verify we're inside a Toolbar
  useToolbarContext();

  const [internalPressed, setInternalPressed] = useState(defaultPressed);
  const isControlled = controlledPressed !== undefined;
  const pressed = isControlled ? controlledPressed : internalPressed;

  const handleClick = useCallback(
    (event: React.MouseEvent<HTMLButtonElement>) => {
      if (disabled) return;

      const newPressed = !pressed;

      if (!isControlled) {
        setInternalPressed(newPressed);
      }

      onPressedChange?.(newPressed);
      onClick?.(event);
    },
    [disabled, pressed, isControlled, onPressedChange, onClick]
  );

  return (
    <button
      type="button"
      aria-pressed={pressed}
      className={`apg-toolbar-button ${className}`.trim()}
      disabled={disabled}
      onClick={handleClick}
      {...props}
    >
      {children}
    </button>
  );
}

/**
 * Props for the ToolbarSeparator component
 */
export interface ToolbarSeparatorProps {
  /** Additional CSS class */
  className?: string;
}

/**
 * Separator component for use within a Toolbar
 */
export function ToolbarSeparator({ className = '' }: ToolbarSeparatorProps): React.ReactElement {
  const { orientation } = useToolbarContext();

  // Separator orientation is perpendicular to toolbar orientation
  const separatorOrientation = orientation === 'horizontal' ? 'vertical' : 'horizontal';

  return (
    <div
      role="separator"
      aria-orientation={separatorOrientation}
      className={`apg-toolbar-separator ${className}`.trim()}
    />
  );
}

使い方

import {
  Toolbar,
  ToolbarButton,
  ToolbarToggleButton,
  ToolbarSeparator
} from '@patterns/toolbar/Toolbar';

// Basic usage
<Toolbar aria-label="Text formatting">
  <ToolbarToggleButton>Bold</ToolbarToggleButton>
  <ToolbarToggleButton>Italic</ToolbarToggleButton>
  <ToolbarSeparator />
  <ToolbarButton>Copy</ToolbarButton>
  <ToolbarButton>Paste</ToolbarButton>
</Toolbar>

// Vertical toolbar
<Toolbar orientation="vertical" aria-label="Actions">
  <ToolbarButton>New</ToolbarButton>
  <ToolbarButton>Open</ToolbarButton>
  <ToolbarButton>Save</ToolbarButton>
</Toolbar>

// Controlled toggle button
const [isBold, setIsBold] = useState(false);

<Toolbar aria-label="Formatting">
  <ToolbarToggleButton
    pressed={isBold}
    onPressedChange={setIsBold}
  >
    Bold
  </ToolbarToggleButton>
</Toolbar>

API

Toolbar Props

プロパティ	型	デフォルト	説明
`orientation`	`'horizontal' \| 'vertical'`	`'horizontal'`	ツールバーの方向
`aria-label`	`string`	-	ツールバーのアクセシブルラベル
`children`	`React.ReactNode`	-	ツールバーのコンテンツ

ToolbarButton Props

プロパティ	型	デフォルト	説明
`disabled`	`boolean`	`false`	ボタンが無効化されているかどうか
`onClick`	`() => void`	-	クリックハンドラー

ToolbarToggleButton Props

プロパティ	型	デフォルト	説明
`pressed`	`boolean`	-	制御された押下状態
`defaultPressed`	`boolean`	`false`	初期押下状態（非制御）
`onPressedChange`	`(pressed: boolean) => void`	-	押下状態が変更された時のコールバック
`disabled`	`boolean`	`false`	ボタンが無効化されているかどうか

テスト

テストは、キーボード操作、ARIA属性、アクセシビリティ要件の観点からAPG準拠を検証します。Toolbarコンポーネントは2層のテスト戦略を使用しています。

テスト戦略

ユニットテスト（Testing Library）

フレームワーク固有のテストライブラリを使用して、コンポーネントの出力を検証します。正しいHTML構造とARIA属性を確認します。

ARIA属性（aria-pressed、aria-orientation）
キーボード操作（矢印キー、Home、End）
Roving tabindexの動作
jest-axeによるアクセシビリティ

E2Eテスト（Playwright）

実際のブラウザ環境で全フレームワークのコンポーネント動作を検証します。インタラクションとクロスフレームワークの一貫性をカバーします。

クリック操作
矢印キーナビゲーション（水平・垂直）
トグルボタンの状態変更
無効化アイテムの処理
ライブブラウザでのARIA構造検証
axe-coreアクセシビリティスキャン
クロスフレームワーク一貫性チェック

テストカテゴリ

高優先度 : APGキーボード操作（Unit + E2E）

テスト	説明
`ArrowRight/Left`	アイテム間のフォーカス移動（水平）
`ArrowDown/Up`	アイテム間のフォーカス移動（垂直）
`Home`	最初のアイテムにフォーカス移動
`End`	最後のアイテムにフォーカス移動
`No wrap`	フォーカスは端で停止（ループなし）
`Disabled skip`	ナビゲーション中に無効化アイテムをスキップ
`Enter/Space`	ボタンをアクティブ化またはトグルボタンを切り替え

高優先度 : APG ARIA属性（Unit + E2E）

テスト	説明
`role="toolbar"`	コンテナがtoolbarロールを持つ
`aria-orientation`	水平/垂直方向を反映
`aria-label/labelledby`	ツールバーがアクセシブルな名前を持つ
`aria-pressed`	トグルボタンが押下状態を反映
`role="separator"`	セパレーターが正しいロールと方向を持つ
`type="button"`	ボタンが明示的なtype属性を持つ

高優先度 : フォーカス管理 - Roving Tabindex（Unit + E2E）

テスト	説明
`tabIndex=0`	最初の有効なアイテムがtabIndex=0を持つ
`tabIndex=-1`	他のアイテムがtabIndex=-1を持つ
`Click updates focus`	アイテムをクリックするとroving focus位置が更新される

高優先度 : トグルボタンの状態（Unit + E2E）

テスト	説明
`aria-pressed`	トグルボタンがaria-pressed属性を持つ
`Click toggles`	トグルボタンをクリックするとaria-pressedが変わる
`defaultPressed`	defaultPressedを持つトグルは押下状態で開始

中優先度 : アクセシビリティ（Unit + E2E）

テスト	説明
`axe violations`	WCAG 2.1 AA違反なし（jest-axe/axe-core経由）
`Vertical toolbar`	垂直方向もaxeに合格

低優先度 : クロスフレームワーク一貫性（E2E）

テスト	説明
`All frameworks render`	React、Vue、Svelte、Astroすべてがツールバーをレンダリング
`Consistent keyboard`	すべてのフレームワークがキーボードナビゲーションをサポート
`Consistent ARIA`	すべてのフレームワークが一貫したARIA構造を持つ
`Toggle buttons`	すべてのフレームワークがトグルボタン状態をサポート

E2Eテストコード例

以下は実際のE2Eテストファイルです (e2e/toolbar.spec.ts).

e2e/toolbar.spec.ts

import { test, expect } from '@playwright/test';
import AxeBuilder from '@axe-core/playwright';

/**
 * E2E Tests for Toolbar Pattern
 *
 * A container for grouping a set of controls, such as buttons, toggle buttons,
 * or menus. Toolbar uses roving tabindex for keyboard navigation.
 *
 * APG Reference: https://www.w3.org/WAI/ARIA/apg/patterns/toolbar/
 */

const frameworks = ['react', 'vue', 'svelte', 'astro'] as const;

// ============================================
// Helper Functions
// ============================================

const getToolbar = (page: import('@playwright/test').Page) => {
  return page.getByRole('toolbar');
};

const getToolbarButtons = (page: import('@playwright/test').Page, toolbarIndex = 0) => {
  const toolbar = getToolbar(page).nth(toolbarIndex);
  return toolbar.getByRole('button');
};

const getSeparators = (page: import('@playwright/test').Page, toolbarIndex = 0) => {
  const toolbar = getToolbar(page).nth(toolbarIndex);
  return toolbar.getByRole('separator');
};

// ============================================
// Framework-specific Tests
// ============================================

for (const framework of frameworks) {
  test.describe(`Toolbar (${framework})`, () => {
    test.beforeEach(async ({ page }) => {
      await page.goto(`patterns/toolbar/${framework}/demo/`);
      await getToolbar(page).first().waitFor();

      // Wait for hydration - first button should have tabindex="0"
      const firstButton = getToolbarButtons(page, 0).first();
      await expect
        .poll(async () => {
          const tabindex = await firstButton.getAttribute('tabindex');
          return tabindex === '0';
        })
        .toBe(true);
    });

    // ------------------------------------------
    // 🔴 High Priority: APG ARIA Structure
    // ------------------------------------------
    test.describe('APG: ARIA Structure', () => {
      test('container has role="toolbar"', async ({ page }) => {
        const toolbar = getToolbar(page).first();
        await expect(toolbar).toHaveRole('toolbar');
      });

      test('toolbar has aria-label for accessible name', async ({ page }) => {
        const toolbar = getToolbar(page).first();
        const ariaLabel = await toolbar.getAttribute('aria-label');
        expect(ariaLabel).toBeTruthy();
      });

      test('horizontal toolbar has aria-orientation="horizontal"', async ({ page }) => {
        const toolbar = getToolbar(page).first();
        await expect(toolbar).toHaveAttribute('aria-orientation', 'horizontal');
      });

      test('vertical toolbar has aria-orientation="vertical"', async ({ page }) => {
        // Second toolbar is vertical
        const toolbar = getToolbar(page).nth(1);
        await expect(toolbar).toHaveAttribute('aria-orientation', 'vertical');
      });

      test('buttons have implicit role="button"', async ({ page }) => {
        const buttons = getToolbarButtons(page, 0);
        const count = await buttons.count();
        expect(count).toBeGreaterThan(0);

        for (let i = 0; i < Math.min(3, count); i++) {
          await expect(buttons.nth(i)).toHaveRole('button');
        }
      });

      test('separator has role="separator"', async ({ page }) => {
        const separators = getSeparators(page, 0);
        const count = await separators.count();
        expect(count).toBeGreaterThan(0);

        await expect(separators.first()).toHaveRole('separator');
      });

      test('separator in horizontal toolbar has aria-orientation="vertical"', async ({ page }) => {
        const separator = getSeparators(page, 0).first();
        await expect(separator).toHaveAttribute('aria-orientation', 'vertical');
      });

      test('separator in vertical toolbar has aria-orientation="horizontal"', async ({ page }) => {
        // Second toolbar is vertical
        const separator = getSeparators(page, 1).first();
        await expect(separator).toHaveAttribute('aria-orientation', 'horizontal');
      });
    });

    // ------------------------------------------
    // 🔴 High Priority: Toggle Button ARIA
    // ------------------------------------------
    test.describe('APG: Toggle Button ARIA', () => {
      test('toggle button has aria-pressed attribute', async ({ page }) => {
        const buttons = getToolbarButtons(page, 0);
        const firstButton = buttons.first();

        const ariaPressed = await firstButton.getAttribute('aria-pressed');
        expect(ariaPressed === 'true' || ariaPressed === 'false').toBe(true);
      });

      test('clicking toggle button changes aria-pressed', async ({ page }) => {
        const buttons = getToolbarButtons(page, 0);
        const toggleButton = buttons.first();

        const initialPressed = await toggleButton.getAttribute('aria-pressed');

        await toggleButton.click();

        const newPressed = await toggleButton.getAttribute('aria-pressed');
        expect(newPressed).not.toBe(initialPressed);
      });

      test('toggle button with defaultPressed starts as pressed', async ({ page }) => {
        // Fifth toolbar has defaultPressed toggle buttons
        const toolbar = getToolbar(page).nth(4);
        const buttons = toolbar.getByRole('button');
        const firstButton = buttons.first();

        await expect(firstButton).toHaveAttribute('aria-pressed', 'true');
      });
    });

    // ------------------------------------------
    // 🔴 High Priority: Keyboard Interaction (Horizontal)
    // ------------------------------------------
    test.describe('APG: Keyboard Interaction (Horizontal)', () => {
      test('ArrowRight moves focus to next button', async ({ page }) => {
        const buttons = getToolbarButtons(page, 0);
        const firstButton = buttons.first();
        const secondButton = buttons.nth(1);

        await firstButton.click();
        await expect(firstButton).toBeFocused();

        await firstButton.press('ArrowRight');

        await expect(secondButton).toBeFocused();
      });

      test('ArrowLeft moves focus to previous button', async ({ page }) => {
        const buttons = getToolbarButtons(page, 0);
        const firstButton = buttons.first();
        const secondButton = buttons.nth(1);

        await secondButton.click();
        await expect(secondButton).toBeFocused();

        await secondButton.press('ArrowLeft');

        await expect(firstButton).toBeFocused();
      });

      test('Home moves focus to first button', async ({ page }) => {
        const buttons = getToolbarButtons(page, 0);
        const firstButton = buttons.first();
        const lastButton = buttons.last();

        await lastButton.click();
        await expect(lastButton).toBeFocused();

        await lastButton.press('Home');

        await expect(firstButton).toBeFocused();
      });

      test('End moves focus to last button', async ({ page }) => {
        const buttons = getToolbarButtons(page, 0);
        const firstButton = buttons.first();
        const lastButton = buttons.last();

        await firstButton.click();
        await expect(firstButton).toBeFocused();

        await firstButton.press('End');

        await expect(lastButton).toBeFocused();
      });

      test('focus does not wrap at end (stops at edge)', async ({ page }) => {
        const buttons = getToolbarButtons(page, 0);
        const lastButton = buttons.last();

        await lastButton.click();
        await expect(lastButton).toBeFocused();

        await lastButton.press('ArrowRight');

        // Should still be on last button (no wrap)
        await expect(lastButton).toBeFocused();
      });

      test('focus does not wrap at start (stops at edge)', async ({ page }) => {
        const buttons = getToolbarButtons(page, 0);
        const firstButton = buttons.first();

        await firstButton.click();
        await expect(firstButton).toBeFocused();

        await firstButton.press('ArrowLeft');

        // Should still be on first button (no wrap)
        await expect(firstButton).toBeFocused();
      });

      test('ArrowUp/Down are ignored in horizontal toolbar', async ({ page }) => {
        const buttons = getToolbarButtons(page, 0);
        const firstButton = buttons.first();

        await firstButton.click();
        await expect(firstButton).toBeFocused();

        await firstButton.press('ArrowDown');
        await expect(firstButton).toBeFocused();

        await expect(firstButton).toBeFocused();
        await firstButton.press('ArrowUp');
        await expect(firstButton).toBeFocused();
      });
    });

    // ------------------------------------------
    // 🔴 High Priority: Keyboard Interaction (Vertical)
    // ------------------------------------------
    test.describe('APG: Keyboard Interaction (Vertical)', () => {
      test('ArrowDown moves focus to next button in vertical toolbar', async ({ page }) => {
        // Second toolbar is vertical
        const buttons = getToolbarButtons(page, 1);
        const firstButton = buttons.first();
        const secondButton = buttons.nth(1);

        await firstButton.click();
        await expect(firstButton).toBeFocused();

        await firstButton.press('ArrowDown');

        await expect(secondButton).toBeFocused();
      });

      test('ArrowUp moves focus to previous button in vertical toolbar', async ({ page }) => {
        const buttons = getToolbarButtons(page, 1);
        const firstButton = buttons.first();
        const secondButton = buttons.nth(1);

        await secondButton.click();
        await expect(secondButton).toBeFocused();

        await secondButton.press('ArrowUp');

        await expect(firstButton).toBeFocused();
      });

      test('ArrowLeft/Right are ignored in vertical toolbar', async ({ page }) => {
        const buttons = getToolbarButtons(page, 1);
        const firstButton = buttons.first();

        await firstButton.click();
        await expect(firstButton).toBeFocused();

        await firstButton.press('ArrowRight');
        await expect(firstButton).toBeFocused();

        await expect(firstButton).toBeFocused();
        await firstButton.press('ArrowLeft');
        await expect(firstButton).toBeFocused();
      });
    });

    // ------------------------------------------
    // 🔴 High Priority: Disabled Items
    // ------------------------------------------
    test.describe('APG: Disabled Items', () => {
      test('disabled button has disabled attribute', async ({ page }) => {
        // Third toolbar has disabled items
        const toolbar = getToolbar(page).nth(2);
        const buttons = toolbar.getByRole('button');

        let foundDisabled = false;
        const count = await buttons.count();

        for (let i = 0; i < count; i++) {
          const isDisabled = await buttons.nth(i).isDisabled();
          if (isDisabled) {
            foundDisabled = true;
            break;
          }
        }

        expect(foundDisabled).toBe(true);
      });

      test('arrow key navigation skips disabled buttons', async ({ page }) => {
        // Third toolbar has disabled items: Undo, Redo(disabled), Cut, Copy, Paste(disabled)
        const toolbar = getToolbar(page).nth(2);
        const buttons = toolbar.getByRole('button');
        const undoButton = buttons.filter({ hasText: 'Undo' });

        await undoButton.click();
        await expect(undoButton).toBeFocused();

        // ArrowRight should skip Redo (disabled) and go to Cut
        await undoButton.press('ArrowRight');

        // Should be on Cut, not Redo
        const focusedButton = page.locator(':focus');
        const focusedText = await focusedButton.textContent();
        expect(focusedText).not.toContain('Redo');
      });
    });

    // ------------------------------------------
    // 🔴 High Priority: Roving Tabindex
    // ------------------------------------------
    test.describe('APG: Roving Tabindex', () => {
      test('first button has tabindex="0" initially', async ({ page }) => {
        const buttons = getToolbarButtons(page, 0);
        const firstButton = buttons.first();

        await expect(firstButton).toHaveAttribute('tabindex', '0');
      });

      test('other buttons have tabindex="-1" initially', async ({ page }) => {
        const buttons = getToolbarButtons(page, 0);
        const count = await buttons.count();

        for (let i = 1; i < count; i++) {
          await expect(buttons.nth(i)).toHaveAttribute('tabindex', '-1');
        }
      });

      test('focused button gets tabindex="0", previous loses it', async ({ page }) => {
        const buttons = getToolbarButtons(page, 0);
        const firstButton = buttons.first();
        const secondButton = buttons.nth(1);

        await firstButton.click();
        await expect(firstButton).toBeFocused();
        await firstButton.press('ArrowRight');

        // Second button should now have tabindex="0"
        await expect(secondButton).toHaveAttribute('tabindex', '0');
        // First button should have tabindex="-1"
        await expect(firstButton).toHaveAttribute('tabindex', '-1');
      });

      test('only one enabled button has tabindex="0" at a time', async ({ page }) => {
        const buttons = getToolbarButtons(page, 0);
        const count = await buttons.count();

        let tabbableCount = 0;
        for (let i = 0; i < count; i++) {
          const button = buttons.nth(i);
          const isDisabled = await button.isDisabled();
          if (isDisabled) continue;

          const tabindex = await button.getAttribute('tabindex');
          if (tabindex === '0') {
            tabbableCount++;
          }
        }

        expect(tabbableCount).toBe(1);
      });
    });

    // ------------------------------------------
    // 🔴 High Priority: Button Activation
    // ------------------------------------------
    test.describe('APG: Button Activation', () => {
      test('Enter activates button', async ({ page }) => {
        const buttons = getToolbarButtons(page, 0);
        const toggleButton = buttons.first();

        // Focus the button without clicking (to avoid changing state)
        await toggleButton.focus();
        await expect(toggleButton).toBeFocused();

        const initialPressed = await toggleButton.getAttribute('aria-pressed');

        await toggleButton.press('Enter');

        const newPressed = await toggleButton.getAttribute('aria-pressed');
        expect(newPressed).not.toBe(initialPressed);
      });

      test('Space activates button', async ({ page }) => {
        const buttons = getToolbarButtons(page, 0);
        const toggleButton = buttons.first();

        // Focus the button without clicking (to avoid changing state)
        await toggleButton.focus();
        await expect(toggleButton).toBeFocused();

        const initialPressed = await toggleButton.getAttribute('aria-pressed');

        await toggleButton.press('Space');

        const newPressed = await toggleButton.getAttribute('aria-pressed');
        expect(newPressed).not.toBe(initialPressed);
      });
    });

    // ------------------------------------------
    // 🟢 Low Priority: Accessibility
    // ------------------------------------------
    test.describe('Accessibility', () => {
      test('has no axe-core violations', async ({ page }) => {
        await getToolbar(page).first().waitFor();

        const results = await new AxeBuilder({ page })
          .include('[role="toolbar"]')
          .disableRules(['color-contrast'])
          .analyze();

        expect(results.violations).toEqual([]);
      });
    });
  });
}

// ============================================
// Cross-framework Consistency Tests
// ============================================

test.describe('Toolbar - Cross-framework Consistency', () => {
  test('all frameworks render toolbars', async ({ page }) => {
    for (const framework of frameworks) {
      await page.goto(`patterns/toolbar/${framework}/demo/`);
      await getToolbar(page).first().waitFor();

      const toolbars = getToolbar(page);
      const count = await toolbars.count();
      expect(count).toBeGreaterThan(0);
    }
  });

  test('all frameworks support keyboard navigation', async ({ page }) => {
    test.setTimeout(60000);

    for (const framework of frameworks) {
      await page.goto(`patterns/toolbar/${framework}/demo/`);
      await getToolbar(page).first().waitFor();

      const buttons = getToolbarButtons(page, 0);
      const firstButton = buttons.first();
      const secondButton = buttons.nth(1);

      await firstButton.click();
      await expect(firstButton).toBeFocused();

      await firstButton.press('ArrowRight');
      await expect(secondButton).toBeFocused();
    }
  });

  test('all frameworks have consistent ARIA structure', async ({ page }) => {
    test.setTimeout(60000);

    for (const framework of frameworks) {
      await page.goto(`patterns/toolbar/${framework}/demo/`);
      await getToolbar(page).first().waitFor();

      // Check toolbar role
      const toolbar = getToolbar(page).first();
      await expect(toolbar).toHaveRole('toolbar');

      // Check aria-label
      const ariaLabel = await toolbar.getAttribute('aria-label');
      expect(ariaLabel).toBeTruthy();

      // Check aria-orientation
      const orientation = await toolbar.getAttribute('aria-orientation');
      expect(orientation).toBe('horizontal');

      // Check buttons exist
      const buttons = getToolbarButtons(page, 0);
      const count = await buttons.count();
      expect(count).toBeGreaterThan(0);
    }
  });

  test('all frameworks support toggle buttons', async ({ page }) => {
    test.setTimeout(60000);

    for (const framework of frameworks) {
      await page.goto(`patterns/toolbar/${framework}/demo/`);
      await getToolbar(page).first().waitFor();

      const buttons = getToolbarButtons(page, 0);
      const toggleButton = buttons.first();

      // Should have aria-pressed
      const initialPressed = await toggleButton.getAttribute('aria-pressed');
      expect(initialPressed === 'true' || initialPressed === 'false').toBe(true);

      // Should toggle on click
      await toggleButton.click();
      const newPressed = await toggleButton.getAttribute('aria-pressed');
      expect(newPressed).not.toBe(initialPressed);
    }
  });
});

テストの実行

# Toolbarのユニットテストを実行
npm run test -- toolbar

# ToolbarのE2Eテストを実行（全フレームワーク）
npm run test:e2e:pattern --pattern=toolbar

# 特定のフレームワークでE2Eテストを実行
npm run test:e2e:react:pattern --pattern=toolbar

テストツール

Vitest (opens in new tab) - ユニットテストランナー
Testing Library (opens in new tab) - フレームワーク別テストユーティリティ（React、Vue、Svelte）
Playwright (opens in new tab) - E2Eテスト用ブラウザ自動化
axe-core/playwright (opens in new tab) - E2Eでの自動アクセシビリティテスト

詳細は testing-strategy.md (opens in new tab) を参照してください。

Toolbar.test.tsx

import { render, screen } from '@testing-library/react';
import userEvent from '@testing-library/user-event';
import { axe } from 'jest-axe';
import { describe, expect, it, vi } from 'vitest';
import { Toolbar, ToolbarButton, ToolbarToggleButton, ToolbarSeparator } from './Toolbar';

describe('Toolbar', () => {
  // 🔴 High Priority: APG Core Compliance
  describe('APG: ARIA Attributes', () => {
    it('has role="toolbar"', () => {
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarButton>Button</ToolbarButton>
        </Toolbar>
      );
      expect(screen.getByRole('toolbar')).toBeInTheDocument();
    });

    it('has aria-orientation="horizontal" by default', () => {
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarButton>Button</ToolbarButton>
        </Toolbar>
      );
      expect(screen.getByRole('toolbar')).toHaveAttribute('aria-orientation', 'horizontal');
    });

    it('aria-orientation reflects orientation prop', () => {
      const { rerender } = render(
        <Toolbar aria-label="Test toolbar" orientation="vertical">
          <ToolbarButton>Button</ToolbarButton>
        </Toolbar>
      );
      expect(screen.getByRole('toolbar')).toHaveAttribute('aria-orientation', 'vertical');

      rerender(
        <Toolbar aria-label="Test toolbar" orientation="horizontal">
          <ToolbarButton>Button</ToolbarButton>
        </Toolbar>
      );
      expect(screen.getByRole('toolbar')).toHaveAttribute('aria-orientation', 'horizontal');
    });

    it('passes through aria-label', () => {
      render(
        <Toolbar aria-label="Text formatting">
          <ToolbarButton>Button</ToolbarButton>
        </Toolbar>
      );
      expect(screen.getByRole('toolbar')).toHaveAttribute('aria-label', 'Text formatting');
    });

    it('passes through aria-labelledby', () => {
      render(
        <>
          <h2 id="toolbar-label">Toolbar Label</h2>
          <Toolbar aria-labelledby="toolbar-label">
            <ToolbarButton>Button</ToolbarButton>
          </Toolbar>
        </>
      );
      expect(screen.getByRole('toolbar')).toHaveAttribute('aria-labelledby', 'toolbar-label');
    });
  });

  describe('APG: Keyboard Interaction (Horizontal)', () => {
    it('moves focus to next button with ArrowRight', async () => {
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarButton>First</ToolbarButton>
          <ToolbarButton>Second</ToolbarButton>
          <ToolbarButton>Third</ToolbarButton>
        </Toolbar>
      );

      const firstButton = screen.getByRole('button', { name: 'First' });
      firstButton.focus();

      await user.keyboard('{ArrowRight}');

      expect(screen.getByRole('button', { name: 'Second' })).toHaveFocus();
    });

    it('moves focus to previous button with ArrowLeft', async () => {
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarButton>First</ToolbarButton>
          <ToolbarButton>Second</ToolbarButton>
          <ToolbarButton>Third</ToolbarButton>
        </Toolbar>
      );

      const secondButton = screen.getByRole('button', { name: 'Second' });
      secondButton.focus();

      await user.keyboard('{ArrowLeft}');

      expect(screen.getByRole('button', { name: 'First' })).toHaveFocus();
    });

    it('does not wrap from last to first with ArrowRight (stops at edge)', async () => {
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarButton>First</ToolbarButton>
          <ToolbarButton>Second</ToolbarButton>
          <ToolbarButton>Third</ToolbarButton>
        </Toolbar>
      );

      const thirdButton = screen.getByRole('button', { name: 'Third' });
      thirdButton.focus();

      await user.keyboard('{ArrowRight}');

      expect(thirdButton).toHaveFocus();
    });

    it('does not wrap from first to last with ArrowLeft (stops at edge)', async () => {
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarButton>First</ToolbarButton>
          <ToolbarButton>Second</ToolbarButton>
          <ToolbarButton>Third</ToolbarButton>
        </Toolbar>
      );

      const firstButton = screen.getByRole('button', { name: 'First' });
      firstButton.focus();

      await user.keyboard('{ArrowLeft}');

      expect(firstButton).toHaveFocus();
    });

    it('ArrowUp/Down are disabled in horizontal toolbar', async () => {
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarButton>First</ToolbarButton>
          <ToolbarButton>Second</ToolbarButton>
        </Toolbar>
      );

      const firstButton = screen.getByRole('button', { name: 'First' });
      firstButton.focus();

      await user.keyboard('{ArrowDown}');
      expect(firstButton).toHaveFocus();

      await user.keyboard('{ArrowUp}');
      expect(firstButton).toHaveFocus();
    });

    it('moves focus to first button with Home', async () => {
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarButton>First</ToolbarButton>
          <ToolbarButton>Second</ToolbarButton>
          <ToolbarButton>Third</ToolbarButton>
        </Toolbar>
      );

      const thirdButton = screen.getByRole('button', { name: 'Third' });
      thirdButton.focus();

      await user.keyboard('{Home}');

      expect(screen.getByRole('button', { name: 'First' })).toHaveFocus();
    });

    it('moves focus to last button with End', async () => {
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarButton>First</ToolbarButton>
          <ToolbarButton>Second</ToolbarButton>
          <ToolbarButton>Third</ToolbarButton>
        </Toolbar>
      );

      const firstButton = screen.getByRole('button', { name: 'First' });
      firstButton.focus();

      await user.keyboard('{End}');

      expect(screen.getByRole('button', { name: 'Third' })).toHaveFocus();
    });

    it('skips disabled items when navigating', async () => {
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarButton>First</ToolbarButton>
          <ToolbarButton disabled>Second (disabled)</ToolbarButton>
          <ToolbarButton>Third</ToolbarButton>
        </Toolbar>
      );

      const firstButton = screen.getByRole('button', { name: 'First' });
      firstButton.focus();

      await user.keyboard('{ArrowRight}');

      expect(screen.getByRole('button', { name: 'Third' })).toHaveFocus();
    });
  });

  describe('APG: Keyboard Interaction (Vertical)', () => {
    it('moves focus to next button with ArrowDown', async () => {
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar" orientation="vertical">
          <ToolbarButton>First</ToolbarButton>
          <ToolbarButton>Second</ToolbarButton>
          <ToolbarButton>Third</ToolbarButton>
        </Toolbar>
      );

      const firstButton = screen.getByRole('button', { name: 'First' });
      firstButton.focus();

      await user.keyboard('{ArrowDown}');

      expect(screen.getByRole('button', { name: 'Second' })).toHaveFocus();
    });

    it('moves focus to previous button with ArrowUp', async () => {
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar" orientation="vertical">
          <ToolbarButton>First</ToolbarButton>
          <ToolbarButton>Second</ToolbarButton>
          <ToolbarButton>Third</ToolbarButton>
        </Toolbar>
      );

      const secondButton = screen.getByRole('button', { name: 'Second' });
      secondButton.focus();

      await user.keyboard('{ArrowUp}');

      expect(screen.getByRole('button', { name: 'First' })).toHaveFocus();
    });

    it('ArrowLeft/Right are disabled in vertical toolbar', async () => {
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar" orientation="vertical">
          <ToolbarButton>First</ToolbarButton>
          <ToolbarButton>Second</ToolbarButton>
        </Toolbar>
      );

      const firstButton = screen.getByRole('button', { name: 'First' });
      firstButton.focus();

      await user.keyboard('{ArrowRight}');
      expect(firstButton).toHaveFocus();

      await user.keyboard('{ArrowLeft}');
      expect(firstButton).toHaveFocus();
    });

    it('stops at edge with ArrowDown (does not wrap)', async () => {
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar" orientation="vertical">
          <ToolbarButton>First</ToolbarButton>
          <ToolbarButton>Second</ToolbarButton>
        </Toolbar>
      );

      const secondButton = screen.getByRole('button', { name: 'Second' });
      secondButton.focus();

      await user.keyboard('{ArrowDown}');

      expect(secondButton).toHaveFocus();
    });
  });

  describe('APG: Focus Management', () => {
    it('first enabled item has tabIndex=0, others have tabIndex=-1 (Roving Tabindex)', () => {
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarButton>First</ToolbarButton>
          <ToolbarButton>Second</ToolbarButton>
        </Toolbar>
      );

      const buttons = screen.getAllByRole('button');
      expect(buttons[0]).toHaveAttribute('tabIndex', '0');
      expect(buttons[1]).toHaveAttribute('tabIndex', '-1');
    });

    it('updates focus position on click', async () => {
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarButton>First</ToolbarButton>
          <ToolbarButton>Second</ToolbarButton>
          <ToolbarButton>Third</ToolbarButton>
        </Toolbar>
      );

      await user.click(screen.getByRole('button', { name: 'Second' }));
      await user.keyboard('{ArrowRight}');

      expect(screen.getByRole('button', { name: 'Third' })).toHaveFocus();
    });
  });
});

describe('ToolbarButton', () => {
  describe('ARIA Attributes', () => {
    it('has implicit role="button"', () => {
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarButton>Click me</ToolbarButton>
        </Toolbar>
      );
      expect(screen.getByRole('button', { name: 'Click me' })).toBeInTheDocument();
    });

    it('has type="button"', () => {
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarButton>Click me</ToolbarButton>
        </Toolbar>
      );
      expect(screen.getByRole('button')).toHaveAttribute('type', 'button');
    });
  });

  describe('Functionality', () => {
    it('fires onClick on click', async () => {
      const handleClick = vi.fn();
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarButton onClick={handleClick}>Click me</ToolbarButton>
        </Toolbar>
      );

      await user.click(screen.getByRole('button'));

      expect(handleClick).toHaveBeenCalledTimes(1);
    });

    it('fires onClick on Enter', async () => {
      const handleClick = vi.fn();
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarButton onClick={handleClick}>Click me</ToolbarButton>
        </Toolbar>
      );

      const button = screen.getByRole('button');
      button.focus();
      await user.keyboard('{Enter}');

      expect(handleClick).toHaveBeenCalledTimes(1);
    });

    it('fires onClick on Space', async () => {
      const handleClick = vi.fn();
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarButton onClick={handleClick}>Click me</ToolbarButton>
        </Toolbar>
      );

      const button = screen.getByRole('button');
      button.focus();
      await user.keyboard(' ');

      expect(handleClick).toHaveBeenCalledTimes(1);
    });

    it('does not fire onClick when disabled', async () => {
      const handleClick = vi.fn();
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarButton onClick={handleClick} disabled>
            Click me
          </ToolbarButton>
        </Toolbar>
      );

      await user.click(screen.getByRole('button'));

      expect(handleClick).not.toHaveBeenCalled();
    });

    it('is not focusable when disabled (disabled attribute)', () => {
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarButton disabled>Click me</ToolbarButton>
        </Toolbar>
      );
      expect(screen.getByRole('button')).toBeDisabled();
    });
  });
});

describe('ToolbarToggleButton', () => {
  describe('ARIA Attributes', () => {
    it('has implicit role="button"', () => {
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarToggleButton>Toggle</ToolbarToggleButton>
        </Toolbar>
      );
      expect(screen.getByRole('button', { name: 'Toggle' })).toBeInTheDocument();
    });

    it('has type="button"', () => {
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarToggleButton>Toggle</ToolbarToggleButton>
        </Toolbar>
      );
      expect(screen.getByRole('button')).toHaveAttribute('type', 'button');
    });

    it('has aria-pressed="false" in initial state', () => {
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarToggleButton>Toggle</ToolbarToggleButton>
        </Toolbar>
      );
      expect(screen.getByRole('button')).toHaveAttribute('aria-pressed', 'false');
    });

    it('has aria-pressed="true" when pressed', () => {
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarToggleButton defaultPressed>Toggle</ToolbarToggleButton>
        </Toolbar>
      );
      expect(screen.getByRole('button')).toHaveAttribute('aria-pressed', 'true');
    });
  });

  describe('Functionality', () => {
    it('toggles aria-pressed on click', async () => {
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarToggleButton>Toggle</ToolbarToggleButton>
        </Toolbar>
      );

      const button = screen.getByRole('button');
      expect(button).toHaveAttribute('aria-pressed', 'false');

      await user.click(button);
      expect(button).toHaveAttribute('aria-pressed', 'true');

      await user.click(button);
      expect(button).toHaveAttribute('aria-pressed', 'false');
    });

    it('toggles aria-pressed on Enter', async () => {
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarToggleButton>Toggle</ToolbarToggleButton>
        </Toolbar>
      );

      const button = screen.getByRole('button');
      button.focus();
      expect(button).toHaveAttribute('aria-pressed', 'false');

      await user.keyboard('{Enter}');
      expect(button).toHaveAttribute('aria-pressed', 'true');
    });

    it('toggles aria-pressed on Space', async () => {
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarToggleButton>Toggle</ToolbarToggleButton>
        </Toolbar>
      );

      const button = screen.getByRole('button');
      button.focus();
      expect(button).toHaveAttribute('aria-pressed', 'false');

      await user.keyboard(' ');
      expect(button).toHaveAttribute('aria-pressed', 'true');
    });

    it('fires onPressedChange', async () => {
      const handlePressedChange = vi.fn();
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarToggleButton onPressedChange={handlePressedChange}>Toggle</ToolbarToggleButton>
        </Toolbar>
      );

      await user.click(screen.getByRole('button'));

      expect(handlePressedChange).toHaveBeenCalledWith(true);

      await user.click(screen.getByRole('button'));

      expect(handlePressedChange).toHaveBeenCalledWith(false);
    });

    it('sets initial state with defaultPressed', () => {
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarToggleButton defaultPressed>Toggle</ToolbarToggleButton>
        </Toolbar>
      );
      expect(screen.getByRole('button')).toHaveAttribute('aria-pressed', 'true');
    });

    it('controlled state with pressed prop', async () => {
      const user = userEvent.setup();
      const Controlled = () => {
        const [pressed, setPressed] = React.useState(false);
        return (
          <Toolbar aria-label="Test toolbar">
            <ToolbarToggleButton pressed={pressed} onPressedChange={setPressed}>
              Toggle
            </ToolbarToggleButton>
          </Toolbar>
        );
      };

      render(<Controlled />);

      const button = screen.getByRole('button');
      expect(button).toHaveAttribute('aria-pressed', 'false');

      await user.click(button);
      expect(button).toHaveAttribute('aria-pressed', 'true');
    });

    it('does not toggle when disabled', async () => {
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarToggleButton disabled>Toggle</ToolbarToggleButton>
        </Toolbar>
      );

      const button = screen.getByRole('button');
      expect(button).toHaveAttribute('aria-pressed', 'false');

      await user.click(button);

      expect(button).toHaveAttribute('aria-pressed', 'false');
    });

    it('does not fire onPressedChange when disabled', async () => {
      const handlePressedChange = vi.fn();
      const user = userEvent.setup();
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarToggleButton disabled onPressedChange={handlePressedChange}>
            Toggle
          </ToolbarToggleButton>
        </Toolbar>
      );

      await user.click(screen.getByRole('button'));

      expect(handlePressedChange).not.toHaveBeenCalled();
    });

    it('is not focusable when disabled (disabled attribute)', () => {
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarToggleButton disabled>Toggle</ToolbarToggleButton>
        </Toolbar>
      );
      expect(screen.getByRole('button')).toBeDisabled();
    });
  });
});

describe('ToolbarSeparator', () => {
  describe('ARIA Attributes', () => {
    it('has role="separator"', () => {
      render(
        <Toolbar aria-label="Test toolbar">
          <ToolbarButton>Before</ToolbarButton>
          <ToolbarSeparator />
          <ToolbarButton>After</ToolbarButton>
        </Toolbar>
      );
      expect(screen.getByRole('separator')).toBeInTheDocument();
    });

    it('has aria-orientation="vertical" in horizontal toolbar', () => {
      render(
        <Toolbar aria-label="Test toolbar" orientation="horizontal">
          <ToolbarButton>Before</ToolbarButton>
          <ToolbarSeparator />
          <ToolbarButton>After</ToolbarButton>
        </Toolbar>
      );
      expect(screen.getByRole('separator')).toHaveAttribute('aria-orientation', 'vertical');
    });

    it('has aria-orientation="horizontal" in vertical toolbar', () => {
      render(
        <Toolbar aria-label="Test toolbar" orientation="vertical">
          <ToolbarButton>Before</ToolbarButton>
          <ToolbarSeparator />
          <ToolbarButton>After</ToolbarButton>
        </Toolbar>
      );
      expect(screen.getByRole('separator')).toHaveAttribute('aria-orientation', 'horizontal');
    });
  });
});

describe('Accessibility', () => {
  it('has no WCAG 2.1 AA violations', async () => {
    const { container } = render(
      <Toolbar aria-label="Text formatting">
        <ToolbarToggleButton>Bold</ToolbarToggleButton>
        <ToolbarToggleButton>Italic</ToolbarToggleButton>
        <ToolbarSeparator />
        <ToolbarButton>Copy</ToolbarButton>
        <ToolbarButton>Paste</ToolbarButton>
      </Toolbar>
    );
    const results = await axe(container);
    expect(results).toHaveNoViolations();
  });

  it('has no WCAG 2.1 AA violations in vertical toolbar', async () => {
    const { container } = render(
      <Toolbar aria-label="Actions" orientation="vertical">
        <ToolbarButton>New</ToolbarButton>
        <ToolbarButton>Open</ToolbarButton>
        <ToolbarSeparator />
        <ToolbarButton>Save</ToolbarButton>
      </Toolbar>
    );
    const results = await axe(container);
    expect(results).toHaveNoViolations();
  });
});

describe('HTML Attribute Inheritance', () => {
  it('applies className to container', () => {
    render(
      <Toolbar aria-label="Test toolbar" className="custom-toolbar">
        <ToolbarButton>Button</ToolbarButton>
      </Toolbar>
    );
    expect(screen.getByRole('toolbar')).toHaveClass('custom-toolbar');
  });

  it('applies className to ToolbarButton', () => {
    render(
      <Toolbar aria-label="Test toolbar">
        <ToolbarButton className="custom-button">Button</ToolbarButton>
      </Toolbar>
    );
    expect(screen.getByRole('button')).toHaveClass('custom-button');
  });

  it('applies className to ToolbarToggleButton', () => {
    render(
      <Toolbar aria-label="Test toolbar">
        <ToolbarToggleButton className="custom-toggle">Toggle</ToolbarToggleButton>
      </Toolbar>
    );
    expect(screen.getByRole('button')).toHaveClass('custom-toggle');
  });

  it('applies className to ToolbarSeparator', () => {
    render(
      <Toolbar aria-label="Test toolbar">
        <ToolbarButton>Before</ToolbarButton>
        <ToolbarSeparator className="custom-separator" />
        <ToolbarButton>After</ToolbarButton>
      </Toolbar>
    );
    expect(screen.getByRole('separator')).toHaveClass('custom-separator');
  });
});

// Import React for the controlled component test
import React from 'react';

リソース

WAI-ARIA APG: Toolbar パターン (opens in new tab)
WAI-ARIA: toolbar role (opens in new tab)
AI Implementation Guide (llm.md) (opens in new tab) - ARIA specs, keyboard support, test checklist