LabelsSelect DropdownTitle Component

app/assets/javascripts/vue_shared/components/sidebar/labels_select/dropdown_title.vue

+<script>
+export default {
+  props: {
+    canEdit: {
+      type: Boolean,
+      required: true,
+    },
+  },
+};
+</script>
+
+<template>
+  <div class="title hide-collapsed append-bottom-10">
+    {{ __('Labels') }}
+    <template v-if="canEdit">
+      <i
+        aria-hidden="true"
+        class="fa fa-spinner fa-spin block-loading"
+        data-hidden="true"
+      >
+      </i>
+      <button
+        type="button"
+        class="edit-link btn btn-blank pull-right js-sidebar-dropdown-toggle"
+      >
+        {{ __('Edit') }}
+      </button>
+    </template>
+  </div>
+</template>

spec/javascripts/vue_shared/components/sidebar/labels_select/dropdown_title_spec.js

+import Vue from 'vue';
+
+import dropdownTitleComponent from '~/vue_shared/components/sidebar/labels_select/dropdown_title.vue';
+
+import mountComponent from '../../../../helpers/vue_mount_component_helper';
+
+const createComponent = (canEdit = true) => {
+  const Component = Vue.extend(dropdownTitleComponent);
+
+  return mountComponent(Component, {
+    canEdit,
+  });
+};
+
+describe('DropdownTitleComponent', () => {
+  let vm;
+
+  beforeEach(() => {
+    vm = createComponent();
+  });
+
+  afterEach(() => {
+    vm.$destroy();
+  });
+
+  describe('template', () => {
+    it('renders title text', () => {
+      expect(vm.$el.classList.contains('title', 'hide-collapsed')).toBe(true);
+      expect(vm.$el.innerText.trim()).toContain('Labels');
+    });
+
+    it('renders spinner icon element', () => {
+      expect(vm.$el.querySelector('.fa-spinner.fa-spin.block-loading')).not.toBeNull();
+    });
+
+    it('renders `Edit` button element', () => {
+      const editBtnEl = vm.$el.querySelector('button.edit-link.js-sidebar-dropdown-toggle');
+      expect(editBtnEl).not.toBeNull();
+      expect(editBtnEl.innerText.trim()).toBe('Edit');
+    });
+  });
+});