[new feature] Slider: add vertical prop (#3078)

packages/slider/test/index.spec.js

@@ -1,11 +1,19 @@
 import Slider from '..';
 import { mount, triggerDrag, trigger } from '../../../test/utils';
 
-Element.prototype.getBoundingClientRect = jest.fn(() => ({ width: 100, left: 0 }));
+function mockGetBoundingClientRect(vertical) {
+  Element.prototype.getBoundingClientRect = jest.fn(() => ({
+    width: vertical ? 0 : 100,
+    height: vertical ? 100 : 0,
+    top: vertical ? 0 : 100,
+    left: vertical ? 100 : 0
+  }));
+}
 
 test('drag button', () => {
+  mockGetBoundingClientRect();
+
   const wrapper = mount(Slider, {
-    attachToDocument: true,
     propsData: {
       value: 50,
       disabled: true
@@ -26,6 +34,8 @@ test('drag button', () => {
 });
 
 it('click bar', () => {
+  mockGetBoundingClientRect();
+
   const wrapper = mount(Slider, {
     propsData: {
       value: 50,
@@ -44,3 +54,40 @@ it('click bar', () => {
   trigger(wrapper, 'click', 100, 0);
   expect(wrapper).toMatchSnapshot();
 });
+
+test('drag button vertical', () => {
+  mockGetBoundingClientRect(true);
+
+  const wrapper = mount(Slider, {
+    propsData: {
+      value: 50,
+      vertical: true
+    }
+  });
+
+  wrapper.vm.$on('input', value => {
+    wrapper.setProps({ value });
+  });
+
+  const button = wrapper.find('.van-slider__button');
+  triggerDrag(button, 0, 50);
+  expect(wrapper).toMatchSnapshot();
+});
+
+it('click vertical', () => {
+  mockGetBoundingClientRect(true);
+
+  const wrapper = mount(Slider, {
+    propsData: {
+      value: 50,
+      vertical: true
+    }
+  });
+
+  wrapper.vm.$on('input', value => {
+    wrapper.setProps({ value });
+  });
+
+  trigger(wrapper, 'click', 0, 100);
+  expect(wrapper).toMatchSnapshot();
+});