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test(web): add high-quality unit tests for Base UI wrapper primitives (#32904)
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import { Menu } from '@base-ui/react/menu'
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import { fireEvent, render, screen, within } from '@testing-library/react'
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import { describe, expect, it, vi } from 'vitest'
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import {
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DropdownMenu,
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DropdownMenuContent,
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DropdownMenuGroup,
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DropdownMenuItem,
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DropdownMenuPortal,
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DropdownMenuRadioGroup,
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DropdownMenuSeparator,
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DropdownMenuSub,
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DropdownMenuSubContent,
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DropdownMenuSubTrigger,
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DropdownMenuTrigger,
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} from '../index'
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describe('dropdown-menu wrapper', () => {
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describe('alias exports', () => {
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it('should map direct aliases to the corresponding Menu primitive when importing menu roots', () => {
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expect(DropdownMenu).toBe(Menu.Root)
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expect(DropdownMenuPortal).toBe(Menu.Portal)
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expect(DropdownMenuTrigger).toBe(Menu.Trigger)
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expect(DropdownMenuSub).toBe(Menu.SubmenuRoot)
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expect(DropdownMenuGroup).toBe(Menu.Group)
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expect(DropdownMenuRadioGroup).toBe(Menu.RadioGroup)
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})
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})
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describe('DropdownMenuContent', () => {
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it('should position content at bottom-end with default placement when props are omitted', () => {
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render(
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<DropdownMenu open>
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<DropdownMenuTrigger aria-label="menu trigger">Open</DropdownMenuTrigger>
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<DropdownMenuContent positionerProps={{ 'role': 'group', 'aria-label': 'content positioner' }}>
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<DropdownMenuItem>Content action</DropdownMenuItem>
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</DropdownMenuContent>
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</DropdownMenu>,
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)
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const positioner = screen.getByRole('group', { name: 'content positioner' })
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const popup = screen.getByRole('menu')
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expect(positioner).toHaveAttribute('data-side', 'bottom')
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expect(positioner).toHaveAttribute('data-align', 'end')
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expect(within(popup).getByRole('menuitem', { name: 'Content action' })).toBeInTheDocument()
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})
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it('should apply custom placement when custom positioning props are provided', () => {
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render(
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<DropdownMenu open>
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<DropdownMenuTrigger aria-label="menu trigger">Open</DropdownMenuTrigger>
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<DropdownMenuContent
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placement="top-start"
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sideOffset={12}
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alignOffset={-3}
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positionerProps={{ 'role': 'group', 'aria-label': 'custom content positioner' }}
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>
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<DropdownMenuItem>Custom content</DropdownMenuItem>
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</DropdownMenuContent>
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</DropdownMenu>,
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)
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const positioner = screen.getByRole('group', { name: 'custom content positioner' })
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const popup = screen.getByRole('menu')
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expect(positioner).toHaveAttribute('data-side', 'top')
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expect(positioner).toHaveAttribute('data-align', 'start')
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expect(within(popup).getByRole('menuitem', { name: 'Custom content' })).toBeInTheDocument()
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})
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it('should forward passthrough attributes and handlers when positionerProps and popupProps are provided', () => {
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const handlePositionerMouseEnter = vi.fn()
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const handlePopupClick = vi.fn()
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render(
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<DropdownMenu open>
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<DropdownMenuTrigger aria-label="menu trigger">Open</DropdownMenuTrigger>
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<DropdownMenuContent
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positionerProps={{
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'role': 'group',
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'aria-label': 'dropdown content positioner',
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'id': 'dropdown-content-positioner',
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'onMouseEnter': handlePositionerMouseEnter,
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}}
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popupProps={{
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role: 'menu',
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id: 'dropdown-content-popup',
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onClick: handlePopupClick,
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}}
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>
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<DropdownMenuItem>Passthrough content</DropdownMenuItem>
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</DropdownMenuContent>
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</DropdownMenu>,
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)
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const positioner = screen.getByRole('group', { name: 'dropdown content positioner' })
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const popup = screen.getByRole('menu')
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fireEvent.mouseEnter(positioner)
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fireEvent.click(popup)
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expect(positioner).toHaveAttribute('id', 'dropdown-content-positioner')
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expect(popup).toHaveAttribute('id', 'dropdown-content-popup')
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expect(handlePositionerMouseEnter).toHaveBeenCalledTimes(1)
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expect(handlePopupClick).toHaveBeenCalledTimes(1)
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})
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})
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describe('DropdownMenuSubContent', () => {
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it('should position sub-content at left-start with default placement when props are omitted', () => {
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render(
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<DropdownMenu open>
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<DropdownMenuTrigger aria-label="menu trigger">Open</DropdownMenuTrigger>
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<DropdownMenuContent>
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<DropdownMenuSub open>
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<DropdownMenuSubTrigger>More actions</DropdownMenuSubTrigger>
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<DropdownMenuSubContent positionerProps={{ 'role': 'group', 'aria-label': 'sub positioner' }}>
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<DropdownMenuItem>Sub action</DropdownMenuItem>
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</DropdownMenuSubContent>
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</DropdownMenuSub>
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</DropdownMenuContent>
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</DropdownMenu>,
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)
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const positioner = screen.getByRole('group', { name: 'sub positioner' })
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expect(positioner).toHaveAttribute('data-side', 'left')
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expect(positioner).toHaveAttribute('data-align', 'start')
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expect(screen.getByRole('menuitem', { name: 'Sub action' })).toBeInTheDocument()
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})
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it('should apply custom placement and forward passthrough props for sub-content when custom props are provided', () => {
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const handlePositionerFocus = vi.fn()
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const handlePopupClick = vi.fn()
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render(
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<DropdownMenu open>
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<DropdownMenuTrigger aria-label="menu trigger">Open</DropdownMenuTrigger>
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<DropdownMenuContent>
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<DropdownMenuSub open>
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<DropdownMenuSubTrigger>More actions</DropdownMenuSubTrigger>
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<DropdownMenuSubContent
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placement="right-end"
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sideOffset={6}
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alignOffset={2}
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positionerProps={{
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'role': 'group',
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'aria-label': 'dropdown sub positioner',
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'id': 'dropdown-sub-positioner',
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'onFocus': handlePositionerFocus,
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}}
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popupProps={{
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role: 'menu',
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id: 'dropdown-sub-popup',
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onClick: handlePopupClick,
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}}
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>
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<DropdownMenuItem>Custom sub action</DropdownMenuItem>
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</DropdownMenuSubContent>
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</DropdownMenuSub>
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</DropdownMenuContent>
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</DropdownMenu>,
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)
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const positioner = screen.getByRole('group', { name: 'dropdown sub positioner' })
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const popup = screen.getByRole('menu', { name: 'More actions' })
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fireEvent.focus(positioner)
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fireEvent.click(popup)
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expect(positioner).toHaveAttribute('data-side', 'right')
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expect(positioner).toHaveAttribute('data-align', 'end')
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expect(positioner).toHaveAttribute('id', 'dropdown-sub-positioner')
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expect(popup).toHaveAttribute('id', 'dropdown-sub-popup')
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expect(handlePositionerFocus).toHaveBeenCalledTimes(1)
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expect(handlePopupClick).toHaveBeenCalledTimes(1)
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})
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})
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describe('DropdownMenuSubTrigger', () => {
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it('should render submenu trigger content when trigger children are provided', () => {
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render(
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<DropdownMenu open>
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<DropdownMenuTrigger aria-label="menu trigger">Open</DropdownMenuTrigger>
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<DropdownMenuContent>
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<DropdownMenuSub open>
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<DropdownMenuSubTrigger>Trigger item</DropdownMenuSubTrigger>
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</DropdownMenuSub>
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</DropdownMenuContent>
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</DropdownMenu>,
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)
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expect(screen.getByRole('menuitem', { name: 'Trigger item' })).toBeInTheDocument()
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})
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it.each([true, false])('should remain interactive and not leak destructive prop when destructive is %s', (destructive) => {
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const handleClick = vi.fn()
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render(
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<DropdownMenu open>
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<DropdownMenuTrigger aria-label="menu trigger">Open</DropdownMenuTrigger>
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<DropdownMenuContent>
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<DropdownMenuSub open>
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<DropdownMenuSubTrigger
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destructive={destructive}
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aria-label="submenu action"
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id={`submenu-trigger-${String(destructive)}`}
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onClick={handleClick}
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>
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Trigger item
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</DropdownMenuSubTrigger>
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</DropdownMenuSub>
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</DropdownMenuContent>
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</DropdownMenu>,
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)
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const subTrigger = screen.getByRole('menuitem', { name: 'submenu action' })
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fireEvent.click(subTrigger)
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expect(subTrigger).toHaveAttribute('id', `submenu-trigger-${String(destructive)}`)
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expect(subTrigger).not.toHaveAttribute('destructive')
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expect(handleClick).toHaveBeenCalledTimes(1)
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})
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})
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describe('DropdownMenuItem', () => {
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it.each([true, false])('should remain interactive and not leak destructive prop when destructive is %s', (destructive) => {
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const handleClick = vi.fn()
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render(
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<DropdownMenu open>
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<DropdownMenuTrigger aria-label="menu trigger">Open</DropdownMenuTrigger>
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<DropdownMenuContent>
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<DropdownMenuItem
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destructive={destructive}
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aria-label="menu action"
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id={`menu-item-${String(destructive)}`}
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onClick={handleClick}
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>
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Item label
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</DropdownMenuItem>
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</DropdownMenuContent>
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</DropdownMenu>,
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)
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const item = screen.getByRole('menuitem', { name: 'menu action' })
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fireEvent.click(item)
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expect(item).toHaveAttribute('id', `menu-item-${String(destructive)}`)
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expect(item).not.toHaveAttribute('destructive')
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expect(handleClick).toHaveBeenCalledTimes(1)
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})
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})
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describe('DropdownMenuSeparator', () => {
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it('should forward passthrough props and handlers when separator props are provided', () => {
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const handleMouseEnter = vi.fn()
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render(
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<DropdownMenu open>
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<DropdownMenuTrigger aria-label="menu trigger">Open</DropdownMenuTrigger>
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<DropdownMenuContent>
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<DropdownMenuSeparator
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aria-label="actions divider"
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id="menu-separator"
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onMouseEnter={handleMouseEnter}
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/>
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</DropdownMenuContent>
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</DropdownMenu>,
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)
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const separator = screen.getByRole('separator', { name: 'actions divider' })
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fireEvent.mouseEnter(separator)
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expect(separator).toHaveAttribute('id', 'menu-separator')
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expect(handleMouseEnter).toHaveBeenCalledTimes(1)
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})
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it('should keep surrounding menu rows rendered when separator is placed between items', () => {
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render(
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<DropdownMenu open>
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<DropdownMenuTrigger aria-label="menu trigger">Open</DropdownMenuTrigger>
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<DropdownMenuContent>
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<DropdownMenuItem>First action</DropdownMenuItem>
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<DropdownMenuSeparator />
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<DropdownMenuItem>Second action</DropdownMenuItem>
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</DropdownMenuContent>
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</DropdownMenu>,
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)
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expect(screen.getByRole('menuitem', { name: 'First action' })).toBeInTheDocument()
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expect(screen.getByRole('menuitem', { name: 'Second action' })).toBeInTheDocument()
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expect(screen.getAllByRole('separator')).toHaveLength(1)
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})
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})
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})
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