add no-unused-vars tests

- update vue-eslint-parser to fix a bug about references.

Author: mysticatea

package.json

@@ -46,7 +46,7 @@
     "eslint": "^5.0.0"
   },
   "dependencies": {
-    "vue-eslint-parser": "^6.0.1"
+    "vue-eslint-parser": "^6.0.2"
   },
   "devDependencies": {
     "@types/node": "^4.2.16",

tests/lib/rules/no-unused-vars.js

@@ -49,6 +49,9 @@ tester.run('no-unused-vars', rule, {
     },
     {
       code: '<template><div v-for="x in foo">{{value | f(x)}}</div></template>'
+    },
+    {
+      code: '<template><div v-for="x in foo" :[x]></div></template>'
     }
   ],
   invalid: [