[new feature] ActionSheet: add round prop (#3874)

src/action-sheet/test/__snapshots__/index.spec.js.snap

@@ -21,3 +21,9 @@ exports[`disable lazy-render 1`] = `
 `;
 
 exports[`render title and default slot 1`] = ``;
+
+exports[`round prop 1`] = `
+<div class="van-popup van-popup--round van-popup--bottom van-action-sheet" name="van-popup-slide-bottom">
+  <div class="van-action-sheet__item van-hairline--top"><span class="van-action-sheet__name">Option</span></div>
+</div>
+`;

src/action-sheet/test/index.spec.js

@@ -137,3 +137,15 @@ test('close-on-click-action prop', () => {
 
   expect(onInput).toHaveBeenCalledWith(false);
 });
+
+test('round prop', () => {
+  const wrapper = mount(ActionSheet, {
+    propsData: {
+      value: true,
+      round: true,
+      actions: [{ name: 'Option' }]
+    }
+  });
+
+  expect(wrapper).toMatchSnapshot();
+});