test(web): add a Storybook story for the combobox primitive (#67)

web/src/components/ui/combobox.stories.tsx

@@ -0,0 +1,63 @@
+import type { Meta, StoryObj } from '@storybook/react-vite'
+import { useState } from 'react'
+import { expect } from 'storybook/test'
+
+import {
+  ComboboxRoot,
+  ComboboxInputGroup,
+  ComboboxInput,
+  ComboboxClear,
+  ComboboxTrigger,
+  ComboboxPopup,
+  ComboboxList,
+  ComboboxItem,
+  ComboboxItemIndicator,
+  ComboboxEmpty,
+} from './combobox'
+
+const fruits = ['Apple', 'Apricot', 'Banana', 'Cherry']
+
+function ComboboxDemo() {
+  const [value, setValue] = useState<string | null>(null)
+
+  return (
+    <ComboboxRoot<string | null>
+      items={fruits}
+      value={value}
+      onValueChange={setValue}
+      itemToStringLabel={(item) => item ?? ''}
+      isItemEqualToValue={(a, b) => a === b}
+    >
+      <ComboboxInputGroup>
+        <ComboboxInput placeholder='Pick a fruit' />
+        <ComboboxClear aria-label='Clear' />
+        <ComboboxTrigger aria-label='Open' />
+      </ComboboxInputGroup>
+      <ComboboxPopup>
+        <ComboboxEmpty>No matches</ComboboxEmpty>
+        <ComboboxList>
+          {(item: string) => (
+            <ComboboxItem key={item} value={item}>
+              <ComboboxItemIndicator className='text-primary'>✓</ComboboxItemIndicator>
+              {item}
+            </ComboboxItem>
+          )}
+        </ComboboxList>
+      </ComboboxPopup>
+    </ComboboxRoot>
+  )
+}
+
+const meta = {
+  component: ComboboxDemo,
+  tags: ['ai-generated'],
+} satisfies Meta<typeof ComboboxDemo>
+
+export default meta
+type Story = StoryObj<typeof meta>
+
+export const Default: Story = {
+  play: async ({ canvas }) => {
+    await expect(canvas.getByPlaceholderText('Pick a fruit')).toBeInTheDocument()
+  },
+}