Fix karma

app/assets/javascripts/vue_shared/components/markdown/header.vue

@@ -53,7 +53,7 @@
           class="js-write-link"
           href="#md-write-holder"
           tabindex="-1"
-          @click.prevent="writeMarkdownTab($event, form)">
+          @click.prevent="writeMarkdownTab($event)">
           Write
         </a>
       </li>
@@ -62,7 +62,7 @@
           class="js-preview-link"
           href="#md-preview-holder"
           tabindex="-1"
-          @click.prevent="previewMarkdownTab($event, form)">
+          @click.prevent="previewMarkdownTab($event)">
           Preview
         </a>
       </li>

spec/javascripts/vue_shared/components/markdown/header_spec.js

@@ -43,11 +43,13 @@ describe('Markdown field header component', () => {
   it('emits toggle markdown event when clicking preview', () => {
     spyOn(vm, '$emit');
 
-    vm.$el.querySelector('li:nth-child(2) a').click();
+    vm.$el.querySelector('.js-preview-link').click();
 
-    expect(
-      vm.$emit,
-    ).toHaveBeenCalledWith('toggle-markdown');
+    expect(vm.$emit).toHaveBeenCalledWith('preview-markdown');
+
+    vm.$el.querySelector('.js-write-link').click();
+
+    expect(vm.$emit).toHaveBeenCalledWith('write-markdown');
   });
 
   it('blurs preview link after click', (done) => {