test: add test case for scope rest spread and trailing function comma

Author: yyx990803

test.js

@@ -2,22 +2,29 @@ const transpile = require('./index')
 const Vue = require('vue')
 const { compile } = require('vue-template-compiler')
 
-test('should work', () => {
-  const res = compile(`
-    <div>
-      <div>{{ foo }}</div>
-      <div v-for="{ name } in items">{{ name }}</div>
-      <div v-bind="{ ...a, ...b }"/>
-    </div>
-  `)
+const toFunction = code => {
+  code = transpile(`function render(){${code}}`)
+  code = code.replace(/function render\(\)\{|\}$/g, '')
+  return new Function(code)
+}
 
-  const toFunction = code => {
-    code = transpile(`function render(){${code}}`)
-    code = code.replace(/^function render\(\)\{|\}$/g, '')
-    return new Function(code)
+const compileAsFunctions = template => {
+  const { render, staticRenderFns } = compile(template)
+  return {
+    render: toFunction(render),
+    staticRenderFns: staticRenderFns.map(toFunction)
   }
+}
 
+test('should work', () => {
   const vm = new Vue({
+    ...compileAsFunctions(`
+      <div>
+        <div>{{ foo }}</div>
+        <div v-for="{ name } in items">{{ name }}</div>
+        <div v-bind="{ ...a, ...b }"/>
+      </div>
+    `),
     data: {
       foo: 'hello',
       items: [
@@ -26,9 +33,7 @@ test('should work', () => {
       ],
       a: { id: 'foo' },
       b: { class: 'bar' }
-    },
-    render: toFunction(res.render),
-    staticRenderFns: res.staticRenderFns.map(toFunction)
+    }
   }).$mount()
 
   expect(vm.$el.innerHTML).toMatch(
@@ -45,3 +50,40 @@ test('arg spread', () => {
   const code = transpile(`function render() {${res.render}}`)
   expect(code).toMatch(`_vm.store.foo.apply(_vm.store, args)`)
 })
+
+test('rest spread in scope position', () => {
+  const vm = new Vue({
+    ...compileAsFunctions(`
+      <foo v-slot="{ foo, ...rest }">{{ rest }}</foo>
+    `),
+    components: {
+      foo: {
+        render(h) {
+          return h('div', this.$scopedSlots.default({
+            foo: 1,
+            bar: 2,
+            baz: 3
+          }))
+        }
+      }
+    }
+  }).$mount()
+
+  expect(vm.$el.innerHTML).toMatch(
+    JSON.stringify({ bar: 2, baz: 3 }, null, 2)
+  )
+})
+
+test('trailing function comma', () => {
+  const spy = jest.fn()
+  const vm = new Vue({
+    ...compileAsFunctions(`
+      <button @click="spy(1,)" />
+    `),
+    methods: {
+      spy
+    }
+  }).$mount()
+  vm.$el.click()
+  expect(spy).toHaveBeenCalled()
+})