!90 新增农历日期工具类

Merge pull request !90 from 断水流大湿兄/v5-dev

hutool-core/src/test/java/cn/hutool/core/date/ChineseDateUtilTest.java

@@ -0,0 +1,21 @@
+package cn.hutool.core.date;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class ChineseDateUtilTest {
+
+    @Test
+    public void chineseDateTest() {
+        ChineseDateUtil date = new ChineseDateUtil(DateUtil.parseDate("2020-01-25"));
+        Assert.assertEquals("2020", date.getChineseYear());
+        Assert.assertEquals("一月", date.getChineseMonth());
+        Assert.assertEquals("正月", date.getChineseMonthName());
+        Assert.assertEquals("初一", date.getChineseDay());
+        Assert.assertEquals("星期六", date.getWeekOfDate());
+        Assert.assertEquals("庚子", date.getCyclical());
+        Assert.assertEquals("鼠", date.getAnimals());
+        Assert.assertEquals("春节", date.getFestivals());
+        Assert.assertEquals("庚子鼠年 正月初一 星期六", date.toString());
+    }
+}