diff --git a/app/components/malio/accordion/Accordion.test.ts b/app/components/malio/accordion/Accordion.test.ts
index 7640cb2..a97892f 100644
--- a/app/components/malio/accordion/Accordion.test.ts
+++ b/app/components/malio/accordion/Accordion.test.ts
@@ -134,3 +134,61 @@ describe('MalioAccordion — mode single & contrôlé', () => {
     expect(wrapper.emitted('update:modelValue')?.[0]).toEqual([['prix']])
   })
 })
+
+describe('MalioAccordion — defaultOpen, disabled & clavier', () => {
+  const WITH_DEFAULT_OPEN = `
+    <MalioAccordionItem title="Prix" value="prix"><p>P</p></MalioAccordionItem>
+    <MalioAccordionItem title="Catégorie" value="cat" :default-open="true"><p>C</p></MalioAccordionItem>
+  `
+  const WITH_DISABLED = `
+    <MalioAccordionItem title="Prix" value="prix"><p>P</p></MalioAccordionItem>
+    <MalioAccordionItem title="Catégorie" value="cat" :disabled="true"><p>C</p></MalioAccordionItem>
+  `
+
+  it('opens defaultOpen items initially in uncontrolled mode', async () => {
+    const wrapper = mountAccordion({}, WITH_DEFAULT_OPEN)
+    await nextTick()
+    const headers = wrapper.findAll('button[aria-expanded]')
+    expect(headers[0].attributes('aria-expanded')).toBe('false')
+    expect(headers[1].attributes('aria-expanded')).toBe('true')
+  })
+
+  it('sets disabled and aria-disabled on a disabled item', () => {
+    const wrapper = mountAccordion({}, WITH_DISABLED)
+    const headers = wrapper.findAll('button[aria-expanded]')
+    expect(headers[1].attributes('disabled')).toBeDefined()
+    expect(headers[1].attributes('aria-disabled')).toBe('true')
+  })
+
+  it('does not toggle a disabled item on click', async () => {
+    const wrapper = mountAccordion({}, WITH_DISABLED)
+    const headers = wrapper.findAll('button[aria-expanded]')
+    await headers[1].trigger('click')
+    expect(headers[1].attributes('aria-expanded')).toBe('false')
+    expect(wrapper.emitted('update:modelValue')).toBeUndefined()
+  })
+
+  it('moves focus to the next header on ArrowDown', async () => {
+    const root = document.createElement('div')
+    document.body.appendChild(root)
+    const wrapper = mountAccordion({}, TWO_ITEMS, root)
+    const headers = wrapper.findAll('button[aria-expanded]')
+    ;(headers[0].element as HTMLElement).focus()
+    await headers[0].trigger('keydown', {key: 'ArrowDown'})
+    expect(document.activeElement).toBe(headers[1].element)
+    wrapper.unmount()
+    root.remove()
+  })
+
+  it('wraps focus to the first header on ArrowDown from the last', async () => {
+    const root = document.createElement('div')
+    document.body.appendChild(root)
+    const wrapper = mountAccordion({}, TWO_ITEMS, root)
+    const headers = wrapper.findAll('button[aria-expanded]')
+    ;(headers[1].element as HTMLElement).focus()
+    await headers[1].trigger('keydown', {key: 'ArrowDown'})
+    expect(document.activeElement).toBe(headers[0].element)
+    wrapper.unmount()
+    root.remove()
+  })
+})