1 files changed, 139 insertions, 0 deletions
diff --git a/spec/frontend/vue_shared/components/sidebar/labels_select/dropdown_value_spec.js b/spec/frontend/vue_shared/components/sidebar/labels_select/dropdown_value_spec.js
new file mode 100644
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+++ b/spec/frontend/vue_shared/components/sidebar/labels_select/dropdown_value_spec.js
@@ -0,0 +1,139 @@
+import Vue from 'vue';
+import $ from 'jquery';
+
+import dropdownValueComponent from '~/vue_shared/components/sidebar/labels_select/dropdown_value.vue';
+
+import mountComponent from 'helpers/vue_mount_component_helper';
+import {
+  mockConfig,
+  mockLabels,
+} from '../../../../../javascripts/vue_shared/components/sidebar/labels_select/mock_data';
+
+const createComponent = (
+  labels = mockLabels,
+  labelFilterBasePath = mockConfig.labelFilterBasePath,
+) => {
+  const Component = Vue.extend(dropdownValueComponent);
+
+  return mountComponent(Component, {
+    labels,
+    labelFilterBasePath,
+    enableScopedLabels: true,
+  });
+};
+
+describe('DropdownValueComponent', () => {
+  let vm;
+
+  beforeEach(() => {
+    vm = createComponent();
+  });
+
+  afterEach(() => {
+    vm.$destroy();
+  });
+
+  describe('computed', () => {
+    describe('isEmpty', () => {
+      it('returns true if `labels` prop is empty', () => {
+        const vmEmptyLabels = createComponent([]);
+
+        expect(vmEmptyLabels.isEmpty).toBe(true);
+        vmEmptyLabels.$destroy();
+      });
+
+      it('returns false if `labels` prop is empty', () => {
+        expect(vm.isEmpty).toBe(false);
+      });
+    });
+  });
+
+  describe('methods', () => {
+    describe('labelFilterUrl', () => {
+      it('returns URL string starting with labelFilterBasePath and encoded label.title', () => {
+        expect(
+          vm.labelFilterUrl({
+            title: 'Foo bar',
+          }),
+        ).toBe('/gitlab-org/my-project/issues?label_name[]=Foo%20bar');
+      });
+    });
+
+    describe('labelStyle', () => {
+      it('returns object with `color` & `backgroundColor` properties from label.textColor & label.color', () => {
+        const label = {
+          textColor: '#FFFFFF',
+          color: '#BADA55',
+        };
+        const styleObj = vm.labelStyle(label);
+
+        expect(styleObj.color).toBe(label.textColor);
+        expect(styleObj.backgroundColor).toBe(label.color);
+      });
+    });
+
+    describe('scopedLabelsDescription', () => {
+      it('returns html for tooltip', () => {
+        const html = vm.scopedLabelsDescription(mockLabels[1]);
+        const $el = $.parseHTML(html);
+
+        expect($el[0]).toHaveClass('scoped-label-tooltip-title');
+        expect($el[2].textContent).toEqual(mockLabels[1].description);
+      });
+    });
+
+    describe('showScopedLabels', () => {
+      it('returns true if the label is scoped label', () => {
+        expect(vm.showScopedLabels(mockLabels[1])).toBe(true);
+      });
+
+      it('returns false when label is a regular label', () => {
+        expect(vm.showScopedLabels(mockLabels[0])).toBe(false);
+      });
+    });
+  });
+
+  describe('template', () => {
+    it('renders component container element with classes `hide-collapsed value issuable-show-labels`', () => {
+      expect(vm.$el.classList.contains('hide-collapsed', 'value', 'issuable-show-labels')).toBe(
+        true,
+      );
+    });
+
+    it('render slot content inside component when `labels` prop is empty', () => {
+      const vmEmptyLabels = createComponent([]);
+
+      expect(vmEmptyLabels.$el.querySelector('.text-secondary').innerText.trim()).toBe(
+        mockConfig.emptyValueText,
+      );
+      vmEmptyLabels.$destroy();
+    });
+
+    it('renders label element with filter URL', () => {
+      expect(vm.$el.querySelector('a').getAttribute('href')).toBe(
+        '/gitlab-org/my-project/issues?label_name[]=Foo%20Label',
+      );
+    });
+
+    it('renders label element and styles based on label details', () => {
+      const labelEl = vm.$el.querySelector('a span.badge.color-label');
+
+      expect(labelEl).not.toBeNull();
+      expect(labelEl.getAttribute('style')).toBe('background-color: rgb(186, 218, 85);');
+      expect(labelEl.innerText.trim()).toBe(mockLabels[0].title);
+    });
+
+    describe('label is of scoped-label type', () => {
+      it('renders a scoped-label-wrapper span to incorporate 2 anchors', () => {
+        expect(vm.$el.querySelector('span.scoped-label-wrapper')).not.toBeNull();
+      });
+
+      it('renders anchor tag containing question icon', () => {
+        const anchor = vm.$el.querySelector('.scoped-label-wrapper a.scoped-label');
+
+        expect(anchor).not.toBeNull();
+        expect(anchor.querySelector('i.fa-question-circle')).not.toBeNull();
+      });
+    });
+  });
+});