diff --git a/frontend/tests/e2e/user/settings/caldav.spec.ts b/frontend/tests/e2e/user/settings/caldav.spec.ts
new file mode 100644
index 000000000..7ff27297a
--- /dev/null
+++ b/frontend/tests/e2e/user/settings/caldav.spec.ts
@@ -0,0 +1,32 @@
+import {test, expect} from '../../../support/fixtures'
+import {gotoUserSettings} from '../../../support/userSettings'
+
+test.describe('CalDAV', () => {
+	test('generates a token that authenticates against the caldav endpoint', async ({
+		authenticatedPage: page, currentUser, apiContext,
+	}) => {
+		await gotoUserSettings(page, 'caldav')
+
+		const created = page.waitForResponse(r =>
+			r.url().includes('/user/settings/token/caldav') && r.request().method() === 'PUT',
+		)
+		await page.getByRole('button', {name: 'Create a CalDAV token'}).click()
+		await created
+
+		// Banner renders the one-time token string; capture it.
+		const banner = page.locator('.message').filter({hasText: 'Here is your new token'})
+		await expect(banner).toBeVisible()
+		const tokenText = await banner.innerText()
+		const tokenMatch = tokenText.match(/[A-Za-z0-9]{40,}/)
+		expect(tokenMatch).not.toBeNull()
+		const token = tokenMatch![0]
+
+		// Hit the caldav principal endpoint with basic auth.
+		const basic = Buffer.from(`${currentUser.username}:${token}`).toString('base64')
+		const resp = await apiContext.fetch(`/dav/principals/${currentUser.username}/`, {
+			method: 'PROPFIND',
+			headers: {Authorization: `Basic ${basic}`, Depth: '0'},
+		})
+		expect(resp.status()).toBeLessThan(300)
+	})
+})