Epic Sidebar Subscriptions Component

spec/javascripts/epics/sidebar/components/sidebar_subscriptions_spec.js

+import Vue from 'vue';
+
+import SidebarSubscriptions from 'ee/epics/sidebar/components/sidebar_subscriptions.vue';
+import mountComponent from 'spec/helpers/vue_mount_component_helper';
+
+const createComponent = () => {
+  const Component = Vue.extend(SidebarSubscriptions);
+
+  return mountComponent(Component, {
+    loading: false,
+    subscribed: true,
+  });
+};
+
+describe('SidebarSubscriptions', () => {
+  let vm;
+
+  beforeEach(() => {
+    vm = createComponent();
+  });
+
+  afterEach(() => {
+    vm.$destroy();
+  });
+
+  describe('methods', () => {
+    describe('onToggleSubscription', () => {
+      it('emits `toggleSubscription` event on component', () => {
+        spyOn(vm, '$emit');
+        vm.onToggleSubscription();
+        expect(vm.$emit).toHaveBeenCalledWith('toggleSubscription');
+      });
+    });
+
+    describe('onToggleSidebar', () => {
+      it('emits `toggleCollapse` event on component', () => {
+        spyOn(vm, '$emit');
+        vm.onToggleSidebar();
+        expect(vm.$emit).toHaveBeenCalledWith('toggleCollapse');
+      });
+    });
+  });
+
+  describe('template', () => {
+    it('renders component container element with classes `block subscriptions`', () => {
+      expect(vm.$el.classList.contains('block', 'subscriptions')).toBe(true);
+    });
+
+    it('renders subscription toggle element', () => {
+      expect(vm.$el.querySelector('.project-feature-toggle')).not.toBeNull();
+    });
+  });
+});