[new feature] SubmitBar: add decimal-length prop (#3151)

packages/submit-bar/test/__snapshots__/index.spec.js.snap

@@ -1,9 +1,17 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
+exports[`decimal length 1`] = `
+<div class="van-submit-bar">
+  <div class="van-submit-bar__bar">
+    <div class="van-submit-bar__text"><span>合计：</span><span class="van-submit-bar__price">¥ 1.1</span></div><button class="van-button van-button--danger van-button--large van-button--square"><span class="van-button__text"></span></button>
+  </div>
+</div>
+`;
+
 exports[`disable submit 1`] = `
 <div class="van-submit-bar">
   <div class="van-submit-bar__bar">
-    <div class="van-submit-bar__text"><span>合计：</span><span class="van-submit-bar__price">¥ 0.00</span></div><button disabled="disabled" class="van-button van-button--danger van-button--large van-button--disabled van-button--square"><span class="van-button__text"></span></button>
+    <div class="van-submit-bar__text"><span>合计：</span><span class="van-submit-bar__price">¥ 0.01</span></div><button disabled="disabled" class="van-button van-button--danger van-button--large van-button--disabled van-button--square"><span class="van-button__text"></span></button>
   </div>
 </div>
 `;

packages/submit-bar/test/index.spec.js

@@ -6,7 +6,7 @@ test('submit', () => {
   const wrapper = mount(SubmitBar, {
     context: {
       props: {
-        price: 0.01
+        price: 1
       },
       on: { submit }
     }
@@ -22,7 +22,7 @@ test('disable submit', () => {
   const wrapper = mount(SubmitBar, {
     context: {
       props: {
-        price: 0.01,
+        price: 1,
         disabled: true
       },
       on: { submit }
@@ -36,3 +36,16 @@ test('disable submit', () => {
   button.trigger('click');
   expect(submit).toHaveBeenCalledTimes(0);
 });
+
+test('decimal length', () => {
+  const wrapper = mount(SubmitBar, {
+    context: {
+      props: {
+        price: 111,
+        decimalLength: 1
+      }
+    }
+  });
+
+  expect(wrapper).toMatchSnapshot();
+});