From b9ff6a625565417e36ffe4a3c5fa802786e44b3c Mon Sep 17 00:00:00 2001
From: Evan You <yyx990803@gmail.com>
Date: Fri, 11 Nov 2022 17:06:50 +0800
Subject: [PATCH] test: test case for #6966

---
 packages/runtime-dom/__tests__/customElement.spec.ts | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/packages/runtime-dom/__tests__/customElement.spec.ts b/packages/runtime-dom/__tests__/customElement.spec.ts
index a3d35790f31..7826f438300 100644
--- a/packages/runtime-dom/__tests__/customElement.spec.ts
+++ b/packages/runtime-dom/__tests__/customElement.spec.ts
@@ -72,6 +72,18 @@ describe('defineCustomElement', () => {
       expect(e._instance).toBe(i)
       expect(e.shadowRoot!.innerHTML).toBe('<div>hello</div>')
     })
+
+    test('remove then insert again', async () => {
+      container.innerHTML = `<my-element></my-element>`
+      const e = container.childNodes[0] as VueElement
+      container.removeChild(e)
+      await nextTick()
+      expect(e._instance).toBe(null)
+      expect(e.shadowRoot!.innerHTML).toBe('')
+      container.appendChild(e)
+      expect(e._instance).toBeTruthy()
+      expect(e.shadowRoot!.innerHTML).toBe('<div>hello</div>')
+    })
   })
 
   describe('props', () => {