Projects Dropdown Search Component Spec

spec/javascripts/projects_dropdown/components/search_spec.js

+import Vue from 'vue';
+
+import searchComponent from '~/projects_dropdown/components/search.vue';
+import eventHub from '~/projects_dropdown/event_hub';
+
+import mountComponent from '../../helpers/vue_mount_component_helper';
+
+const createComponent = () => {
+  const Component = Vue.extend(searchComponent);
+
+  return mountComponent(Component);
+};
+
+describe('SearchComponent', () => {
+  describe('methods', () => {
+    let vm;
+
+    beforeEach(() => {
+      vm = createComponent();
+    });
+
+    afterEach(() => {
+      vm.$destroy();
+    });
+
+    describe('setFocus', () => {
+      it('should set focus to search input', () => {
+        spyOn(vm.$refs.search, 'focus');
+
+        vm.setFocus();
+        expect(vm.$refs.search.focus).toHaveBeenCalled();
+      });
+    });
+
+    describe('emitSearchEvents', () => {
+      it('should emit `searchProjects` event via eventHub when `searchQuery` present', () => {
+        const searchQuery = 'test';
+        spyOn(eventHub, '$emit');
+        vm.searchQuery = searchQuery;
+        vm.emitSearchEvents();
+        expect(eventHub.$emit).toHaveBeenCalledWith('searchProjects', searchQuery);
+      });
+
+      it('should emit `searchCleared` event via eventHub when `searchQuery` is cleared', () => {
+        spyOn(eventHub, '$emit');
+        vm.searchQuery = '';
+        vm.emitSearchEvents();
+        expect(eventHub.$emit).toHaveBeenCalledWith('searchCleared');
+      });
+    });
+  });
+
+  describe('mounted', () => {
+    it('should listen `dropdownOpen` event', (done) => {
+      spyOn(eventHub, '$on');
+      createComponent();
+
+      Vue.nextTick(() => {
+        expect(eventHub.$on).toHaveBeenCalledWith('dropdownOpen', jasmine.any(Function));
+        done();
+      });
+    });
+  });
+
+  describe('beforeDestroy', () => {
+    it('should unbind event listeners on eventHub', (done) => {
+      const vm = createComponent();
+      spyOn(eventHub, '$off');
+
+      vm.$mount();
+      vm.$destroy();
+
+      Vue.nextTick(() => {
+        expect(eventHub.$off).toHaveBeenCalledWith('dropdownOpen', jasmine.any(Function));
+        done();
+      });
+    });
+  });
+
+  describe('template', () => {
+    let vm;
+
+    beforeEach(() => {
+      vm = createComponent();
+    });
+
+    afterEach(() => {
+      vm.$destroy();
+    });
+
+    it('should render component element', () => {
+      const inputEl = vm.$el.querySelector('input.form-control');
+
+      expect(vm.$el.classList.contains('search-input-container')).toBeTruthy();
+      expect(vm.$el.classList.contains('hidden-xs')).toBeTruthy();
+      expect(inputEl).not.toBe(null);
+      expect(inputEl.getAttribute('placeholder')).toBe('Search projects');
+      expect(vm.$el.querySelector('.search-icon')).toBeDefined();
+    });
+  });
+});