fix(history): initial redirect call onReady's onSuccess

Fix #3225

Author: posva

Diff for: src/history/base.js

@@ -15,7 +15,8 @@ import {
   createNavigationDuplicatedError,
   createNavigationCancelledError,
   createNavigationRedirectedError,
-  createNavigationAbortedError
+  createNavigationAbortedError,
+  NavigationFailureType
 } from './errors'
 
 export class History {
@@ -33,8 +34,8 @@ export class History {
 
   // implemented by sub-classes
   +go: (n: number) => void
-  +push: (loc: RawLocation) => void
-  +replace: (loc: RawLocation) => void
+  +push: (loc: RawLocation, onComplete?: Function, onAbort?: Function) => void
+  +replace: (loc: RawLocation, onComplete?: Function, onAbort?: Function) => void
   +ensureURL: (push?: boolean) => void
   +getCurrentLocation: () => string
   +setupListeners: Function
@@ -102,9 +103,17 @@ export class History {
         }
         if (err && !this.ready) {
           this.ready = true
-          this.readyErrorCbs.forEach(cb => {
-            cb(err)
-          })
+          // Initial redirection should still trigger the onReady onSuccess
+          // https://github.com/vuejs/vue-router/issues/3225
+          if (!isRouterError(err, NavigationFailureType.redirected)) {
+            this.readyErrorCbs.forEach(cb => {
+              cb(err)
+            })
+          } else {
+            this.readyCbs.forEach(cb => {
+              cb(route)
+            })
+          }
         }
       }
     )

Diff for: test/unit/specs/error-handling.spec.js

@@ -150,4 +150,37 @@ describe('error handling', () => {
         done()
       })
   })
+
+  // https://github.com/vuejs/vue-router/issues/3225
+  it('should trigger onReady onSuccess when redirecting', done => {
+    const router = new VueRouter({
+      routes: [{ path: '/', component: {}}, { path: '/foo', component: {}}]
+    })
+
+    const onError = jasmine.createSpy('onError')
+    const onReadySuccess = jasmine.createSpy('onReadySuccess')
+    const onReadyFail = jasmine.createSpy('onReadyFail')
+    router.onError(onError)
+    router.onReady(onReadySuccess, onReadyFail)
+
+    router.beforeEach((to, from, next) => {
+      if (to.path === '/') next('/foo')
+      else next()
+    })
+
+    const pushCatch = jasmine.createSpy('pushCatch')
+
+    // initial navigation
+    router
+      .push('/')
+      .catch(pushCatch)
+      .finally(() => {
+        expect(onReadyFail).not.toHaveBeenCalled()
+        // in 3.2.0 it was called with undefined
+        // expect(pushCatch).not.toHaveBeenCalled()
+        expect(onError).not.toHaveBeenCalled()
+        expect(onReadySuccess).toHaveBeenCalled()
+        done()
+      })
+  })
 })