Started on repo tabs spec

spec/javascripts/repo/repo_tabs_spec.js

+import Vue from 'vue';
+import repoTabs from '~/repo/repo_tabs.vue';
+
+describe('RepoTabss', () => {
+  const RepoTabs = Vue.extend(repoTabs);
+
+  function createComponent() {
+    return new RepoTabs().$mount();
+  }
+
+  it('renders a list of tabs', () => {
+  });
+
+  it('does not render a tabs list if no isMini', () => {
+  });
+});