fix(vue-app): not strip trailing slash for redirect external domain (#7533)

packages/vue-app/template/utils.js

@@ -597,6 +597,10 @@ function formatUrl (url, query) {
   let result = (protocol ? protocol + '://' : '//') + parts.shift()
 
   let path = parts.join('/')
+  if (path === '' && parts.length === 1) {
+    result += '/'
+  }
+
   let hash
   parts = path.split('#')
   if (parts.length === 2) {

test/dev/basic.ssr.test.js

@@ -152,6 +152,18 @@ describe('basic ssr', () => {
     expect(html).toContain('<h1>Index page</h1>')
   })
 
+  describe('/redirect', () => {
+    let _headers, _status
+    const renderContext = {
+      res: {
+        writeHead (status, headers) {
+          _status = status
+          _headers = headers
+        },
+        end () { }
+      }
+    }
+
     test('/redirect', async () => {
       const { html, redirected } = await nuxt.server.renderRoute('/redirect')
       expect(html).toContain('<div id="__nuxt"></div>')
@@ -168,21 +180,27 @@ describe('basic ssr', () => {
     })
 
     test('/redirect -> external link', async () => {
-    let _headers, _status
-    const { html } = await nuxt.server.renderRoute('/redirect-external', {
-      res: {
-        writeHead (status, headers) {
-          _status = status
-          _headers = headers
-        },
-        end () { }
-      }
-    })
+      const { html } = await nuxt.server.renderRoute('/redirect-external', renderContext)
       expect(_status).toBe(302)
-    expect(_headers.Location).toBe('https://nuxtjs.org')
+      expect(_headers.Location).toBe('https://nuxtjs.org/api/')
       expect(html).toContain('<div data-server-rendered="true"></div>')
     })
 
+    test('/redirect -> external link without trailing slash', async () => {
+      const { html } = await nuxt.server.renderRoute('/redirect-external-no-slash', renderContext)
+      expect(_status).toBe(302)
+      expect(_headers.Location).toBe('https://nuxtjs.org/api')
+      expect(html).toContain('<div data-server-rendered="true"></div>')
+    })
+
+    test('/redirect -> external link with root domain url', async () => {
+      const { html } = await nuxt.server.renderRoute('/redirect-external-root', renderContext)
+      expect(_status).toBe(302)
+      expect(_headers.Location).toBe('https://nuxtjs.org/')
+      expect(html).toContain('<div data-server-rendered="true"></div>')
+    })
+  })
+
   test('/special-state -> check window.__NUXT__.test = true', async () => {
     const window = await nuxt.server.renderAndGetWindow(url('/special-state'))
     expect(window.document.title).toBe('Nuxt.js')

test/e2e/basic.browser.test.js

@@ -261,7 +261,7 @@ describe('basic browser', () => {
     await page.nuxt.navigate('/redirect-external', false)
 
     await page.waitForFunction(
-      () => window.location.href === 'https://nuxtjs.org/'
+      () => window.location.href === 'https://nuxtjs.org/api/'
     )
     page.close()
   })

test/fixtures/basic/pages/redirect-external-no-slash.vue

@@ -0,0 +1,11 @@
+<template>
+  <div>Redirecting...</div>
+</template>
+
+<script>
+export default {
+  middleware ({ redirect }) {
+    return redirect('https://nuxtjs.org/api')
+  }
+}
+</script>

test/fixtures/basic/pages/redirect-external-root.vue

@@ -0,0 +1,11 @@
+<template>
+  <div>Redirecting...</div>
+</template>
+
+<script>
+export default {
+  middleware ({ redirect }) {
+    return redirect('https://nuxtjs.org/')
+  }
+}
+</script>

test/fixtures/basic/pages/redirect-external.vue

@@ -5,7 +5,7 @@
 <script>
 export default {
   middleware ({ redirect }) {
-    return redirect('https://nuxtjs.org/')
+    return redirect('https://nuxtjs.org/api/')
   }
 }
 </script>