only gen checkbox/radio model on input tags (fix #3516)

Author: yyx990803

src/platforms/web/compiler/directives/model.js

@@ -13,19 +13,16 @@ export default function model (
   warn = _warn
   const value = dir.value
   const modifiers = dir.modifiers
-  if (el.tag === 'select') {
+  const tag = el.tag
+  const type = el.attrsMap.type
+  if (tag === 'select') {
     return genSelect(el, value)
+  } else if (tag === 'input' && type === 'checkbox') {
+    genCheckboxModel(el, value)
+  } else if (tag === 'input' && type === 'radio') {
+    genRadioModel(el, value)
   } else {
-    switch (el.attrsMap.type) {
-      case 'checkbox':
-        genCheckboxModel(el, value)
-        break
-      case 'radio':
-        genRadioModel(el, value)
-        break
-      default:
-        return genDefaultModel(el, value, modifiers)
-    }
+    return genDefaultModel(el, value, modifiers)
   }
 }
 

test/unit/features/component/component-slot.spec.js

@@ -483,7 +483,7 @@ describe('Component slot', () => {
   })
 
   // #3518
-  fit('events should not break when slot is toggled by v-if', done => {
+  it('events should not break when slot is toggled by v-if', done => {
     const spy = jasmine.createSpy()
     const vm = new Vue({
       template: `<test><div class="click" @click="test">hi</div></test>`,