1 files changed, 65 insertions, 0 deletions
diff --git a/spec/frontend/boards/components/issue_due_date_spec.js b/spec/frontend/boards/components/issue_due_date_spec.js
new file mode 100644
index 00000000000..68e26b68f04
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+++ b/spec/frontend/boards/components/issue_due_date_spec.js
@@ -0,0 +1,65 @@
+import Vue from 'vue';
+import dateFormat from 'dateformat';
+import IssueDueDate from '~/boards/components/issue_due_date.vue';
+import mountComponent from '../../helpers/vue_mount_component_helper';
+
+describe('Issue Due Date component', () => {
+  let vm;
+  let date;
+  const Component = Vue.extend(IssueDueDate);
+  const createComponent = (dueDate = new Date()) =>
+    mountComponent(Component, { date: dateFormat(dueDate, 'yyyy-mm-dd', true) });
+
+  beforeEach(() => {
+    date = new Date();
+    vm = createComponent();
+  });
+
+  afterEach(() => {
+    vm.$destroy();
+  });
+
+  it('should render "Today" if the due date is today', () => {
+    const timeContainer = vm.$el.querySelector('time');
+
+    expect(timeContainer.textContent.trim()).toEqual('Today');
+  });
+
+  it('should render "Yesterday" if the due date is yesterday', () => {
+    date.setDate(date.getDate() - 1);
+    vm = createComponent(date);
+
+    expect(vm.$el.querySelector('time').textContent.trim()).toEqual('Yesterday');
+  });
+
+  it('should render "Tomorrow" if the due date is one day from now', () => {
+    date.setDate(date.getDate() + 1);
+    vm = createComponent(date);
+
+    expect(vm.$el.querySelector('time').textContent.trim()).toEqual('Tomorrow');
+  });
+
+  it('should render day of the week if due date is one week away', () => {
+    date.setDate(date.getDate() + 5);
+    vm = createComponent(date);
+
+    expect(vm.$el.querySelector('time').textContent.trim()).toEqual(dateFormat(date, 'dddd'));
+  });
+
+  it('should render month and day for other dates', () => {
+    date.setDate(date.getDate() + 17);
+    vm = createComponent(date);
+    const today = new Date();
+    const isDueInCurrentYear = today.getFullYear() === date.getFullYear();
+    const format = isDueInCurrentYear ? 'mmm d' : 'mmm d, yyyy';
+
+    expect(vm.$el.querySelector('time').textContent.trim()).toEqual(dateFormat(date, format));
+  });
+
+  it('should contain the correct `.text-danger` css class for overdue issue', () => {
+    date.setDate(date.getDate() - 17);
+    vm = createComponent(date);
+
+    expect(vm.$el.querySelector('time').classList.contains('text-danger')).toEqual(true);
+  });
+});