fix: init datetime-picker unit test

test/unit/specs/datetime-picker.spec.js

@@ -0,0 +1,42 @@
+import DatetimePicker from 'packages/datetime-picker';
+import { mount } from 'avoriaz';
+
+describe('DatetimePicker', () => {
+  let wrapper;
+  afterEach(() => {
+    wrapper && wrapper.destroy();
+  });
+
+  it('create a datetime picker', () => {
+    const date = new Date();
+    wrapper = mount(DatetimePicker, {
+      propsData: {
+        type: 'datetime',
+        value: date
+      }
+    });
+    expect(wrapper.data().innerValue.getTime()).to.equal(date.getTime());
+  });
+
+  it('create a date picker', () => {
+    const date = new Date();
+    wrapper = mount(DatetimePicker, {
+      propsData: {
+        type: 'date',
+        value: date
+      }
+    });
+    expect(wrapper.data().innerValue.getTime()).to.equal(date.getTime());
+  });
+
+  it('create a time picker', () => {
+    const time = '10:00';
+    wrapper = mount(DatetimePicker, {
+      propsData: {
+        type: 'time',
+        value: time
+      }
+    });
+    expect(wrapper.data().innerValue).to.equal(time);
+  });
+});