fix: add a failing test

Author: lmiller1990

test/specs/mounting-options/watch.spec.js

@@ -0,0 +1,41 @@
+import {
+  describeWithShallowAndMount,
+  isRunningPhantomJS,
+  vueVersion
+} from '~resources/utils'
+import { itSkipIf, itDoNotRunIf } from 'conditional-specs'
+
+describeWithShallowAndMount('options.watch', mountingMethod => {
+  it('overrides a default watch handler', async () => {
+    const TestComponent = {
+      props: ['someProp'],
+      template: '<div>{{ foo }}</div>',
+      data() {
+        return {
+          foo: 'bar'
+        }
+      },
+      watch: {
+        someProp: {
+          handler() {
+            this.foo = 'updated-bar'
+          }
+        }
+      }
+    }
+    const wrapper = mountingMethod(TestComponent, {
+      watch: {
+        someProp: {
+          handler() {
+            // do nothing
+          }
+        }
+      }
+    })
+
+    wrapper.setProps({ someProp: 'some-new-val' })
+    await wrapper.vm.$nextTick()
+
+    expect(wrapper.text()).to.equal('bar')
+  })
+})