add unit tests for date row component

frontend/src/components/TransactionRows/DateRow.spec.js

@@ -0,0 +1,44 @@
+import { mount } from '@vue/test-utils'
+import DateRow from './DateRow'
+
+const localVue = global.localVue
+
+const mocks = {
+  $i18n: {
+    locale: 'en',
+  },
+  $t: jest.fn((t) => t),
+  $d: jest.fn((d) => d),
+}
+
+const propsData = {
+  date: '02.02.2020',
+}
+
+describe('DateRow', () => {
+  let wrapper
+
+  const Wrapper = () => {
+    return mount(DateRow, { localVue, mocks, propsData })
+  }
+
+  describe('mount', () => {
+    beforeEach(() => {
+      wrapper = Wrapper()
+    })
+
+    it('renders the component', () => {
+      expect(wrapper.find('div.date-row').exists()).toBe(true)
+    })
+
+    it('shows the expiration text', () => {
+      expect(wrapper.find('div.text-right').text()).toBe('form.date')
+    })
+
+    it('shows the date in long format', () => {
+      expect(wrapper.find('div.gdd-transaction-list-item-date').text()).toBe(
+        'Sun Feb 02 2020 00:00:00 GMT+0000 (Koordinierte Weltzeit)',
+      )
+    })
+  })
+})