fix: Update locale (zh-cn) meridiem (#735)

src/locale/zh-cn.js

@@ -43,7 +43,21 @@ const locale = {
     y: '1 年',
     yy: '%d 年'
   },
-  meridiem: hour => (hour < 12 ? '上午' : '下午')
+  meridiem: (hour, minute) => {
+    const hm = (hour * 100) + minute
+    if (hm < 600) {
+      return '凌晨'
+    } else if (hm < 900) {
+      return '早上'
+    } else if (hm < 1130) {
+      return '上午'
+    } else if (hm < 1230) {
+      return '中午'
+    } else if (hm < 1800) {
+      return '下午'
+    }
+    return '晚上'
+  }
 }
 
 dayjs.locale(locale, null, true)

test/locale/zh-cn.test.js

@@ -0,0 +1,21 @@
+import moment from 'moment'
+import MockDate from 'mockdate'
+import dayjs from '../../src'
+import '../../src/locale/zh-cn'
+
+beforeEach(() => {
+  MockDate.set(new Date())
+})
+
+afterEach(() => {
+  MockDate.reset()
+})
+
+it('Meridiem', () => {
+  const dayjsObj = dayjs().locale('zh-cn')
+  const momentObj = moment().locale('zh-cn')
+  for (let i = 0; i <= 24; i += 1) {
+    expect(dayjsObj.add(i, 'hour').format('A'))
+      .toEqual(momentObj.clone().add(i, 'hour').format('A'))
+  }
+})