1 files changed, 61 insertions, 0 deletions
diff --git a/spec/frontend/vue_shared/components/tabs/tabs_spec.js b/spec/frontend/vue_shared/components/tabs/tabs_spec.js
new file mode 100644
index 00000000000..49d92094b34
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+++ b/spec/frontend/vue_shared/components/tabs/tabs_spec.js
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+import Vue from 'vue';
+import Tabs from '~/vue_shared/components/tabs/tabs';
+import Tab from '~/vue_shared/components/tabs/tab.vue';
+
+describe('Tabs component', () => {
+  let vm;
+
+  beforeEach(() => {
+    vm = new Vue({
+      components: {
+        Tabs,
+        Tab,
+      },
+      render(h) {
+        return h('div', [
+          h('tabs', [
+            h('tab', { attrs: { title: 'Testing', active: true } }, 'First tab'),
+            h('tab', [h('template', { slot: 'title' }, 'Test slot'), 'Second tab']),
+          ]),
+        ]);
+      },
+    }).$mount();
+
+    return vm.$nextTick();
+  });
+
+  describe('tab links', () => {
+    it('renders links for tabs', () => {
+      expect(vm.$el.querySelectorAll('a').length).toBe(2);
+    });
+
+    it('renders link titles from props', () => {
+      expect(vm.$el.querySelector('a').textContent).toContain('Testing');
+    });
+
+    it('renders link titles from slot', () => {
+      expect(vm.$el.querySelectorAll('a')[1].textContent).toContain('Test slot');
+    });
+
+    it('renders active class', () => {
+      expect(vm.$el.querySelector('a').classList).toContain('active');
+    });
+
+    it('updates active class on click', () => {
+      vm.$el.querySelectorAll('a')[1].click();
+
+      return vm.$nextTick(() => {
+        expect(vm.$el.querySelector('a').classList).not.toContain('active');
+        expect(vm.$el.querySelectorAll('a')[1].classList).toContain('active');
+      });
+    });
+  });
+
+  describe('content', () => {
+    it('renders content panes', () => {
+      expect(vm.$el.querySelectorAll('.tab-pane').length).toBe(2);
+      expect(vm.$el.querySelectorAll('.tab-pane')[0].textContent).toContain('First tab');
+      expect(vm.$el.querySelectorAll('.tab-pane')[1].textContent).toContain('Second tab');
+    });
+  });
+});