feat: support lazy modifier with setValue

packages/test-utils/src/wrapper.js

@@ -569,10 +569,19 @@ export default class Wrapper implements BaseWrapper {
       tagName === 'TEXTAREA' ||
       tagName === 'SELECT'
     ) {
-      const event = tagName === 'SELECT' ? 'change' : 'input'
       // $FlowIgnore
       this.element.value = value
-      this.trigger(event)
+
+      if (tagName === 'SELECT') {
+        this.trigger('change')
+      } else {
+        this.trigger('input')
+      }
+
+      // for v-model.lazy, we need to trigger a change event, too.
+      if (tagName === 'INPUT' && this.element._vModifiers) {
+        this.trigger('change')
+      }
     } else {
       throwError(`wrapper.setValue() cannot be called on this element`)
     }

test/resources/components/component-with-input.vue

@@ -36,6 +36,8 @@
     {{ textVal }}
     {{ selectVal }}
     {{ radioVal }}
+    <input id="lazy" type="text" v-model.lazy="lazy" />
+    {{ lazy }}
   </div>
 </template>
 
@@ -44,6 +46,7 @@ export default {
   name: 'component-with-input',
   data() {
     return {
+      lazy: '',
       checkboxVal: undefined,
       textVal: undefined,
       textareaVal: undefined,

test/specs/wrapper/setValue.spec.js

@@ -28,6 +28,15 @@ describeWithShallowAndMount('setValue', mountingMethod => {
     expect(wrapper.text()).to.contain('input text awesome binding')
   })
 
+  it('updates dom with input v-model.lazy', async () => {
+    const wrapper = mountingMethod(ComponentWithInput)
+    const input = wrapper.find('input#lazy')
+    input.setValue('lazy')
+    await Vue.nextTick()
+
+    expect(wrapper.text()).to.contain('lazy')
+  })
+
   it('sets element of select value', () => {
     const wrapper = mountingMethod(ComponentWithInput)
     const select = wrapper.find('select')