Stops formState from updating if the form is already open

[ci skip]

app/assets/javascripts/issue_show/components/app.vue

@@ -79,12 +79,14 @@ export default {
   },
   methods: {
     openForm() {
+      if (!this.showForm) {
         this.showForm = true;
         this.store.formState = {
           title: this.state.titleText,
           confidential: this.isConfidential,
           description: this.state.descriptionText,
         };
+      }
     },
     closeForm() {
       this.showForm = false;

spec/javascripts/issue_show/components/app_spec.js

@@ -23,7 +23,7 @@ describe('Issuable output', () => {
     const IssuableDescriptionComponent = Vue.extend(issuableApp);
     Vue.http.interceptors.push(issueShowInterceptor(issueShowData.initialRequest));
 
-    spyOn(eventHub, '$emit');
+    spyOn(eventHub, '$emit').and.callThrough();
 
     vm = new IssuableDescriptionComponent({
       propsData: {
@@ -34,8 +34,9 @@ describe('Issuable output', () => {
         initialTitle: '',
         initialDescriptionHtml: '',
         initialDescriptionText: '',
-        showForm: false,
         isConfidential: false,
+        markdownPreviewUrl: '/',
+        markdownDocs: '/',
       },
     }).$mount();
   });
@@ -89,6 +90,22 @@ describe('Issuable output', () => {
     });
   });
 
+  it('does not update formState if form is already open', (done) => {
+    vm.openForm();
+
+    vm.state.titleText = 'testing 123';
+
+    vm.openForm();
+
+    Vue.nextTick(() => {
+      expect(
+        vm.store.formState.title,
+      ).not.toBe('testing 123');
+
+      done();
+    });
+  });
+
   describe('updateIssuable', () => {
     it('correctly updates issuable data', (done) => {
       spyOn(vm.service, 'updateIssuable').and.callFake(() => new Promise((resolve) => {