fix: don't fire event on disabled element (#424)

Author: eddyerburgh

src/wrappers/wrapper.js

@@ -528,6 +528,11 @@ export default class Wrapper implements BaseWrapper {
       throwError('you cannot set the target value of an event. See the notes section of the docs for more details—https://vue-test-utils.vuejs.org/en/api/wrapper/trigger.html')
     }
 
+    // Don't fire event on a disabled element
+    if (this.attributes().disabled) {
+      return
+    }
+
     const modifiers = {
       enter: 13,
       tab: 9,

test/specs/wrapper/trigger.spec.js

@@ -93,6 +93,21 @@ describeWithShallowAndMount('trigger', (mountingMethod) => {
     expect(clickHandler.calledOnce).to.equal(true)
   })
 
+  it('does not fire on disabled elements', () => {
+    const clickHandler = sinon.stub()
+    const TestComponent = {
+      template: '<button disabled @click="clickHandler"/>',
+      props: ['clickHandler']
+    }
+    const wrapper = mountingMethod(TestComponent, {
+      propsData: {
+        clickHandler
+      }
+    })
+    wrapper.trigger('click')
+    expect(clickHandler.called).to.equal(false)
+  })
+
   it('handles .prevent', () => {
     const TestComponent = {
       template: '<input @keydown.enter.prevent="enter">'