From 1404c82dba84a022275a7d479ad6feaa17e1d909 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E5=98=89=E6=B6=B5?= <chenjiahan@youzan.com>
Date: Thu, 23 Jan 2020 10:22:15 +0800
Subject: [PATCH] feat(CountDown): add change event (#5599)

---
 src/count-down/README.md          |  1 +
 src/count-down/README.zh-CN.md    |  1 +
 src/count-down/index.js           |  1 +
 src/count-down/test/index.spec.js | 18 ++++++++++++++++++
 4 files changed, 21 insertions(+)

diff --git a/src/count-down/README.md b/src/count-down/README.md
index be01b2d78..cf290f05b 100644
--- a/src/count-down/README.md
+++ b/src/count-down/README.md
@@ -130,6 +130,7 @@ export default {
 | Event | Description | Arguments |
 |------|------|------|
 | finish | Triggered when count down finished | - |
+| change `2.4.4` | Triggered when count down changed | timeData |
 
 ### Slots
 
diff --git a/src/count-down/README.zh-CN.md b/src/count-down/README.zh-CN.md
index f89d24cc9..1246fef76 100644
--- a/src/count-down/README.zh-CN.md
+++ b/src/count-down/README.zh-CN.md
@@ -140,6 +140,7 @@ export default {
 | 事件名 | 说明 | 回调参数 |
 |------|------|------|
 | finish | 倒计时结束时触发 | - |
+| change `2.4.4` | 倒计时变化时触发 | timeData |
 
 ### Slots
 
diff --git a/src/count-down/index.js b/src/count-down/index.js
index 3996c01ad..609952674 100644
--- a/src/count-down/index.js
+++ b/src/count-down/index.js
@@ -141,6 +141,7 @@ export default createComponent({
 
     setRemain(remain) {
       this.remain = remain;
+      this.$emit('change', this.timeData);
 
       if (remain === 0) {
         this.pause();
diff --git a/src/count-down/test/index.spec.js b/src/count-down/test/index.spec.js
index a2256bda6..1f0376509 100644
--- a/src/count-down/test/index.spec.js
+++ b/src/count-down/test/index.spec.js
@@ -213,3 +213,21 @@ test('pause when deactivated', async () => {
   wrapper.setData({ render: true });
   expect(countDown.counting).toBeFalsy();
 });
+
+test('change event', async () => {
+  const wrapper = mount(CountDown, {
+    propsData: {
+      time: 1,
+    },
+  });
+
+  expect(wrapper.emitted('change')).toBeFalsy();
+  await later(50);
+  expect(wrapper.emitted('change')[0][0]).toEqual({
+    days: 0,
+    hours: 0,
+    milliseconds: 0,
+    minutes: 0,
+    seconds: 0,
+  });
+});