chore: add hiccup test

e2e-tests/sanitization.spec.ts

@@ -2,7 +2,7 @@ import { expect } from '@playwright/test'
 import { test } from './fixtures'
 import { createRandomPage } from './utils'
 
-test('should not spawn any dialogs', async ({ page, block }) => {
+test('custom html should not spawn any dialogs', async ({ page, block }) => {
   await createRandomPage(page)
 
   page.on('dialog', async dialog => {
@@ -15,7 +15,25 @@ test('should not spawn any dialogs', async ({ page, block }) => {
 
   await page.keyboard.type('<button id="test-xss-button" onclick="confirm(1)">Click me!</button>')
   await block.enterNext()
+  await page.keyboard.type('<details open id="test-xss-toggle" ontoggle=confirm(1);></details>')
+  await block.enterNext()
+
+  await page.click('#test-xss-toggle')
   await page.click('#test-xss-button')
 
   expect(true).toBeTruthy()
 })
+
+test('custom hiccup should not spawn any dialogs', async ({ page, block }) => {
+  await createRandomPage(page)
+
+  page.on('dialog', async dialog => {
+    expect(false).toBeTruthy()
+    await dialog.dismiss()
+  })
+
+  await page.keyboard.type('[:iframe {:src "javascript:confirm(1);"}]')
+  await block.enterNext()
+
+  expect(true).toBeTruthy()
+})