From 27a33892a261f3f2e3bf267999a66ed8b145e1e0 Mon Sep 17 00:00:00 2001
From: zMouse <zmouse@vip.qq.com>
Date: Wed, 15 Jul 2020 20:06:39 +0800
Subject: [PATCH] test(warns): add a warning test when `next` is called twice
 (#371)

---
 __tests__/router.spec.ts | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/__tests__/router.spec.ts b/__tests__/router.spec.ts
index e6b8be6d..62c6626d 100644
--- a/__tests__/router.spec.ts
+++ b/__tests__/router.spec.ts
@@ -354,7 +354,17 @@ describe('Router', () => {
 
     it.todo('avoid infinite redirection loops when doing router.back()')
 
-    it.todo('warns if `next` is called twice')
+    it('warns if `next` is called twice', async () => {
+      const { router } = await newRouter()
+      router.beforeEach((to, from, next) => {
+        next()
+        next()
+      })
+      await router.push('/foo')
+      expect(
+        'It should be called exactly one time in each navigation guard'
+      ).toHaveBeenWarned()
+    })
   })
 
   describe('alias', () => {
-- 
2.47.3