diff --git a/src/main/java/com/nlf/calendar/Lunar.java b/src/main/java/com/nlf/calendar/Lunar.java
index 2e86e71..02600b5 100644
--- a/src/main/java/com/nlf/calendar/Lunar.java
+++ b/src/main/java/com/nlf/calendar/Lunar.java
@@ -9,7 +9,7 @@ import com.nlf.calendar.util.SolarUtil;
 
 /**
  * 农历日期
- * 
+ *
  * @author 6tail
  *
  */
@@ -73,7 +73,9 @@ public class Lunar{
     int diff = 0;
     for(int i=startY;i<y;i++){
       diff += 365;
-      if(SolarUtil.isLeapYear(i)) diff += 1;
+      if(SolarUtil.isLeapYear(i)){
+        diff += 1;
+      }
     }
     for(int i=startM;i<m;i++){
       diff += SolarUtil.getDaysOfMonth(y,i);
@@ -84,7 +86,9 @@ public class Lunar{
     while(lunarD>lastDate){
       lunarD -= lastDate;
       lunarM = LunarUtil.nextMonth(lunarY,lunarM);
-      if(lunarM==1) lunarY++;
+      if(lunarM==1){
+        lunarY++;
+      }
       lastDate = LunarUtil.getDaysOfMonth(lunarY,lunarM);
     }
     year = lunarY;
@@ -116,7 +120,7 @@ public class Lunar{
 
   /**
    * 获取干
-   * 
+   *
    * @return 干，如辛
    */
   public String getGan(){
@@ -125,7 +129,7 @@ public class Lunar{
 
   /**
    * 获取支
-   * 
+   *
    * @return 支，如亥
    */
   public String getZhi(){
@@ -134,7 +138,7 @@ public class Lunar{
 
   /**
    * 获取生肖
-   * 
+   *
    * @return 生肖，如虎
    */
   public String getShengxiao(){
@@ -143,12 +147,15 @@ public class Lunar{
 
   /**
    * 获取中文的月
-   * 
+   *
    * @return 中文月，如正月
    */
   public String getMonthInChinese(){
-    if(month>0) return LunarUtil.MONTH[month];
-    else return "闰"+LunarUtil.MONTH[-month];
+    if(month>0){
+      return LunarUtil.MONTH[month];
+    }else{
+      return "闰"+LunarUtil.MONTH[-month];
+    }
   }
 
   /**
@@ -161,7 +168,7 @@ public class Lunar{
 
   /**
    * 获取中文日
-   * 
+   *
    * @return 中文日，如初一
    */
   public String getDayInChinese(){
@@ -170,7 +177,7 @@ public class Lunar{
 
   /**
    * 获取节
-   * 
+   *
    * @return 节
    */
   public String getJie(){
@@ -184,16 +191,24 @@ public class Lunar{
       index++;
     }
     int term = LunarUtil.JIE_MAP[solarMonth-1][4*index+ry%4];
-    if(ry==121&&solarMonth==4) term = 5;
-    if(ry==132&&solarMonth==4) term = 5;
-    if(ry==194&&solarMonth==6) term = 6;
-    if(solarDay==term) s = LunarUtil.JIE[solarMonth-1];
+    if(ry==121&&solarMonth==4){
+      term = 5;
+    }
+    if(ry==132&&solarMonth==4){
+      term = 5;
+    }
+    if(ry==194&&solarMonth==6){
+      term = 6;
+    }
+    if(solarDay==term){
+      s = LunarUtil.JIE[solarMonth-1];
+    }
     return s;
   }
 
   /**
    * 获取气
-   * 
+   *
    * @return 气
    */
   public String getQi(){
@@ -207,24 +222,30 @@ public class Lunar{
       index++;
     }
     int term = LunarUtil.QI_MAP[solarMonth-1][4*index+ry%4];
-    if(ry==171&&solarMonth==3) term = 21;
-    if(ry==181&&solarMonth==5) term = 21;
-    if(solarDay==term) s = LunarUtil.QI[solarMonth-1];
+    if(ry==171&&solarMonth==3){
+      term = 21;
+    }
+    if(ry==181&&solarMonth==5){
+      term = 21;
+    }
+    if(solarDay==term){
+      s = LunarUtil.QI[solarMonth-1];
+    }
     return s;
   }
 
   /**
    * 获取宿
-   * 
+   *
    * @return 宿
    */
   public String getXiu(){
-    return LunarUtil.XIU[day-1][month-1];
+    return LunarUtil.XIU[day-1][Math.abs(month)-1];
   }
 
   /**
    * 获取政
-   * 
+   *
    * @return 政
    */
   public String getZheng(){
@@ -257,19 +278,21 @@ public class Lunar{
 
   /**
    * 获取节日，有可能一天会有多个节日
-   * 
+   *
    * @return 春节等
    */
   public List<String> getFestivals(){
     List<String> l = new ArrayList<String>();
     String f = LunarUtil.FESTIVAL.get(month+"-"+day);
-    if(null!=f) l.add(f);
+    if(null!=f){
+      l.add(f);
+    }
     return l;
   }
 
   /**
    * 转换为阳历日期
-   * 
+   *
    * @return 阳历日期
    */
   private Solar toSolar(){
@@ -281,7 +304,9 @@ public class Lunar{
     while(true){
       diff += LunarUtil.getDaysOfMonth(y,m);
       m = LunarUtil.nextMonth(y,m);
-      if(m==1) y++;
+      if(m==1){
+        y++;
+      }
       if(y==year&&m==month){
         diff += day;
         break;
@@ -292,7 +317,7 @@ public class Lunar{
     c.add(Calendar.DATE,diff);
     return new Solar(c);
   }
-  
+
   public String toFullString(){
     StringBuilder s = new StringBuilder();
     s.append(toString());
@@ -321,13 +346,14 @@ public class Lunar{
     return s.toString();
   }
 
+  @Override
   public String toString(){
     return getGan()+getZhi()+"年"+getMonthInChinese()+"月"+getDayInChinese();
   }
 
   /**
    * 获取年份
-   * 
+   *
    * @return 如2015
    */
   public int getYear(){
@@ -336,7 +362,7 @@ public class Lunar{
 
   /**
    * 获取月份
-   * 
+   *
    * @return 1到12，负数为闰月
    */
   public int getMonth(){
@@ -345,7 +371,7 @@ public class Lunar{
 
   /**
    * 获取日期
-   * 
+   *
    * @return 日期
    */
   public int getDay(){
@@ -355,4 +381,4 @@ public class Lunar{
   public Solar getSolar(){
     return solar;
   }
-}
\ No newline at end of file
+}
diff --git a/src/main/java/com/nlf/calendar/Solar.java b/src/main/java/com/nlf/calendar/Solar.java
index 0a5fd8c..c6871cd 100644
--- a/src/main/java/com/nlf/calendar/Solar.java
+++ b/src/main/java/com/nlf/calendar/Solar.java
@@ -8,7 +8,7 @@ import com.nlf.calendar.util.SolarUtil;
 
 /**
  * 阳历日期
- * 
+ *
  * @author 6tail
  *
  */
@@ -31,7 +31,7 @@ public class Solar{
 
   /**
    * 通过年月日初始化
-   * 
+   *
    * @param year 年
    * @param month 月，1到12
    * @param day 日，1到31
@@ -46,7 +46,7 @@ public class Solar{
 
   /**
    * 通过日期初始化
-   * 
+   *
    * @param date 日期
    */
   public Solar(Date date){
@@ -56,10 +56,10 @@ public class Solar{
     month = calendar.get(Calendar.MONTH)+1;
     day = calendar.get(Calendar.DATE);
   }
-  
+
   /**
    * 通过日历初始化
-   * 
+   *
    * @param calendar 日历
    */
   public Solar(Calendar calendar){
@@ -103,7 +103,7 @@ public class Solar{
 
   /**
    * 是否闰年
-   * 
+   *
    * @return true/false 闰年/非闰年
    */
   public boolean isLeapYear(){
@@ -112,7 +112,7 @@ public class Solar{
 
   /**
    * 获取星期，0代表周日，1代表周一
-   * 
+   *
    * @return 0123456
    */
   public int getWeek(){
@@ -121,7 +121,7 @@ public class Solar{
 
   /**
    * 获取星期的中文
-   * 
+   *
    * @return 日一二三四五六
    */
   public String getWeekInChinese(){
@@ -130,51 +130,69 @@ public class Solar{
 
   /**
    * 获取节日，有可能一天会有多个节日
-   * 
+   *
    * @return 劳动节等
    */
   public List<String> getFestivals(){
     List<String> l = new ArrayList<String>();
     //获取几月几日对应的节日
     String f = SolarUtil.FESTIVAL.get(month+"-"+day);
-    if(null!=f) l.add(f);
+    if(null!=f){
+      l.add(f);
+    }
     //计算几月第几个星期几对应的节日
     //第几周
     int weekInMonth = calendar.get(Calendar.WEEK_OF_MONTH);
     //星期几，0代表星期天
     int week = getWeek();
     //星期天很奇葩，会多算一周，需要减掉
-    if(0==week) weekInMonth--;
+    if(0==week){
+      weekInMonth--;
+    }
     f = SolarUtil.WEEK_FESTIVAL.get(month+"-"+weekInMonth+"-"+week);
-    if(null!=f) l.add(f);
+    if(null!=f){
+      l.add(f);
+    }
     return l;
   }
 
   /**
    * 获取星座
-   * 
+   *
    * @return 星座
    */
   public String getXingzuo(){
     int index = 11,m = month,d = day;
     int y = m*100+d;
-    if(y>=321&&y<=419) index = 0;
-    else if(y>=420&&y<=520) index = 1;
-    else if(y>=521&&y<=620) index = 2;
-    else if(y>=621&&y<=722) index = 3;
-    else if(y>=723&&y<=822) index = 4;
-    else if(y>=823&&y<=922) index = 5;
-    else if(y>=923&&y<=1022) index = 6;
-    else if(y>=1023&&y<=1121) index = 7;
-    else if(y>=1122&&y<=1221) index = 8;
-    else if(y>=1222||y<=119) index = 9;
-    else if(y<=218) index = 10;
+    if(y>=321&&y<=419){
+      index = 0;
+    }else if(y>=420&&y<=520){
+      index = 1;
+    }else if(y>=521&&y<=620){
+      index = 2;
+    }else if(y>=621&&y<=722){
+      index = 3;
+    }else if(y>=723&&y<=822){
+      index = 4;
+    }else if(y>=823&&y<=922){
+      index = 5;
+    }else if(y>=923&&y<=1022){
+      index = 6;
+    }else if(y>=1023&&y<=1121){
+      index = 7;
+    }else if(y>=1122&&y<=1221){
+      index = 8;
+    }else if(y>=1222||y<=119){
+      index = 9;
+    }else if(y<=218){
+      index = 10;
+    }
     return SolarUtil.XINGZUO[index];
   }
 
   /**
    * 获取年份
-   * 
+   *
    * @return 如2015
    */
   public int getYear(){
@@ -183,7 +201,7 @@ public class Solar{
 
   /**
    * 获取月份
-   * 
+   *
    * @return 1到12
    */
   public int getMonth(){
@@ -192,13 +210,13 @@ public class Solar{
 
   /**
    * 获取日期
-   * 
+   *
    * @return 1到31之间的数字
    */
   public int getDay(){
     return day;
   }
-  
+
   /**
    * 获取农历
    * @return 农历
@@ -209,17 +227,18 @@ public class Solar{
 
   /**
    * 获取日历
-   * 
+   *
    * @return 日历
    */
   public Calendar getCalendar(){
     return calendar;
   }
 
+  @Override
   public String toString(){
     return year+"-"+(month<10?"0":"")+month+"-"+(day<10?"0":"")+day;
   }
-  
+
   public String toFullString(){
     StringBuilder s = new StringBuilder();
     s.append(toString());
@@ -253,4 +272,4 @@ public class Solar{
     return new Solar(c);
   }
 
-}
\ No newline at end of file
+}
diff --git a/src/main/java/com/nlf/calendar/SolarHalfYear.java b/src/main/java/com/nlf/calendar/SolarHalfYear.java
index 43b3259..6b095ff 100644
--- a/src/main/java/com/nlf/calendar/SolarHalfYear.java
+++ b/src/main/java/com/nlf/calendar/SolarHalfYear.java
@@ -7,6 +7,8 @@ import java.util.List;
 
 /**
  * 阳历半年
+ *
+ * @author 6tail
  */
 public class SolarHalfYear {
   /** 年 */
@@ -14,6 +16,9 @@ public class SolarHalfYear {
   /** 月 */
   private int month;
 
+  /** 半年的月数 */
+  public static final int MONTH_COUNT = 6;
+
   /**
    * 默认当月
    */
@@ -104,7 +109,7 @@ public class SolarHalfYear {
    * @return 半年序号，从1开始
    */
   public int getIndex(){
-    return (int)Math.ceil(month/6D);
+    return (int)Math.ceil(month*1D/MONTH_COUNT);
   }
 
   /**
@@ -118,7 +123,7 @@ public class SolarHalfYear {
     }
     Calendar c = Calendar.getInstance();
     c.set(year,month-1,1);
-    c.add(Calendar.MONTH,6*halfYears);
+    c.add(Calendar.MONTH,MONTH_COUNT*halfYears);
     return new SolarHalfYear(c);
   }
 
@@ -129,12 +134,13 @@ public class SolarHalfYear {
   public List<SolarMonth> getMonths(){
     List<SolarMonth> l = new ArrayList<SolarMonth>();
     int index = getIndex()-1;
-    for(int i=0;i<6;i++){
-      l.add(new SolarMonth(year,6*index+i+1));
+    for(int i=0;i<MONTH_COUNT;i++){
+      l.add(new SolarMonth(year,MONTH_COUNT*index+i+1));
     }
     return l;
   }
 
+  @Override
   public String toString(){
     return year+"."+getIndex();
   }
@@ -142,4 +148,4 @@ public class SolarHalfYear {
   public String toFullString(){
     return year+"年"+(getIndex()==1?"上":"下")+"半年";
   }
-}
\ No newline at end of file
+}
diff --git a/src/main/java/com/nlf/calendar/SolarMonth.java b/src/main/java/com/nlf/calendar/SolarMonth.java
index 174eb14..a1bd7eb 100644
--- a/src/main/java/com/nlf/calendar/SolarMonth.java
+++ b/src/main/java/com/nlf/calendar/SolarMonth.java
@@ -8,7 +8,7 @@ import com.nlf.calendar.util.SolarUtil;
 
 /**
  * 阳历月
- * 
+ *
  * @author 6tail
  *
  */
@@ -45,7 +45,7 @@ public class SolarMonth{
 
   /**
    * 通过年月初始化
-   * 
+   *
    * @param year 年
    * @param month 月
    */
@@ -87,7 +87,7 @@ public class SolarMonth{
 
   /**
    * 获取年
-   * 
+   *
    * @return 年
    */
   public int getYear(){
@@ -96,7 +96,7 @@ public class SolarMonth{
 
   /**
    * 获取月
-   * 
+   *
    * @return 月
    */
   public int getMonth(){
@@ -105,7 +105,7 @@ public class SolarMonth{
 
   /**
    * 获取本月的阳历日期列表
-   * 
+   *
    * @return 阳历日期列表
    */
   public List<Solar> getDays(){
@@ -118,7 +118,7 @@ public class SolarMonth{
     }
     return l;
   }
-  
+
   /**
    * 获取往后推几个月的阳历月，如果要往前推，则月数用负数
    * @param months 月数
@@ -131,6 +131,7 @@ public class SolarMonth{
     return new SolarMonth(c);
   }
 
+  @Override
   public String toString(){
     return year+"-"+month;
   }
@@ -138,4 +139,4 @@ public class SolarMonth{
   public String toFullString(){
     return year+"年"+month+"月";
   }
-}
\ No newline at end of file
+}
diff --git a/src/main/java/com/nlf/calendar/SolarSeason.java b/src/main/java/com/nlf/calendar/SolarSeason.java
index fe18d83..578d2f8 100644
--- a/src/main/java/com/nlf/calendar/SolarSeason.java
+++ b/src/main/java/com/nlf/calendar/SolarSeason.java
@@ -7,12 +7,16 @@ import java.util.List;
 
 /**
  * 阳历季度
+ *
+ * @author 6tail
  */
 public class SolarSeason {
   /** 年 */
   private int year;
   /** 月 */
   private int month;
+  /** 一个季度的月数 */
+  public static final int MONTH_COUNT = 3;
 
   /**
    * 默认当月
@@ -104,7 +108,7 @@ public class SolarSeason {
    * @return 季度序号，从1开始
    */
   public int getIndex(){
-    return (int)Math.ceil(month/3D);
+    return (int)Math.ceil(month*1D/MONTH_COUNT);
   }
 
   /**
@@ -118,7 +122,7 @@ public class SolarSeason {
     }
     Calendar c = Calendar.getInstance();
     c.set(year,month-1,1);
-    c.add(Calendar.MONTH,3*seasons);
+    c.add(Calendar.MONTH,MONTH_COUNT*seasons);
     return new SolarSeason(c);
   }
 
@@ -129,12 +133,13 @@ public class SolarSeason {
   public List<SolarMonth> getMonths(){
     List<SolarMonth> l = new ArrayList<SolarMonth>();
     int index = getIndex()-1;
-    for(int i=0;i<3;i++){
-      l.add(new SolarMonth(year,3*index+i+1));
+    for(int i=0;i<MONTH_COUNT;i++){
+      l.add(new SolarMonth(year,MONTH_COUNT*index+i+1));
     }
     return l;
   }
 
+  @Override
   public String toString(){
     return year+"."+getIndex();
   }
@@ -142,4 +147,4 @@ public class SolarSeason {
   public String toFullString(){
     return year+"年"+getIndex()+"季度";
   }
-}
\ No newline at end of file
+}
diff --git a/src/main/java/com/nlf/calendar/SolarWeek.java b/src/main/java/com/nlf/calendar/SolarWeek.java
index 1c67eb1..ff7b0b7 100644
--- a/src/main/java/com/nlf/calendar/SolarWeek.java
+++ b/src/main/java/com/nlf/calendar/SolarWeek.java
@@ -9,6 +9,8 @@ import java.util.List;
 
 /**
  * 阳历周
+ *
+ * @author 6tail
  */
 public class SolarWeek {
   /** 年 */
@@ -266,6 +268,7 @@ public class SolarWeek {
     return l;
   }
 
+  @Override
   public String toString(){
     return year+"."+month+"."+getIndex();
   }
@@ -273,4 +276,4 @@ public class SolarWeek {
   public String toFullString(){
     return year+"年"+month+"月第"+getIndex()+"周";
   }
-}
\ No newline at end of file
+}
diff --git a/src/main/java/com/nlf/calendar/SolarYear.java b/src/main/java/com/nlf/calendar/SolarYear.java
index 6ce86ae..df0778e 100644
--- a/src/main/java/com/nlf/calendar/SolarYear.java
+++ b/src/main/java/com/nlf/calendar/SolarYear.java
@@ -7,7 +7,7 @@ import java.util.List;
 
 /**
  * 阳历年
- * 
+ *
  * @author 6tail
  *
  */
@@ -15,6 +15,9 @@ public class SolarYear{
   /** 年 */
   private int year;
 
+  /** 一年的月数 */
+  public static final int MONTH_COUNT = 12;
+
   /**
    * 默认当年
    */
@@ -40,7 +43,7 @@ public class SolarYear{
 
   /**
    * 通过年初始化
-   * 
+   *
    * @param year 年
    */
   public SolarYear(int year){
@@ -79,7 +82,7 @@ public class SolarYear{
 
   /**
    * 获取年
-   * 
+   *
    * @return 年
    */
   public int getYear(){
@@ -88,19 +91,19 @@ public class SolarYear{
 
   /**
    * 获取本年的阳历月列表
-   * 
+   *
    * @return 阳历月列表
    */
   public List<SolarMonth> getMonths(){
-    List<SolarMonth> l = new ArrayList<SolarMonth>(12);
+    List<SolarMonth> l = new ArrayList<SolarMonth>(MONTH_COUNT);
     SolarMonth m = new SolarMonth(year,1);
     l.add(m);
-    for(int i = 1;i<12;i++){
+    for(int i = 1;i<MONTH_COUNT;i++){
       l.add(m.next(i));
     }
     return l;
   }
-  
+
   /**
    * 获取往后推几年的阳历年，如果要往前推，则年数用负数
    * @param years 年数
@@ -108,11 +111,12 @@ public class SolarYear{
    */
   public SolarYear next(int years){
     Calendar c = Calendar.getInstance();
-    c.set(year,0,1);
+    c.set(year,Calendar.JANUARY,1);
     c.add(Calendar.YEAR,years);
     return new SolarYear(c);
   }
 
+  @Override
   public String toString(){
     return year+"";
   }
@@ -120,4 +124,4 @@ public class SolarYear{
   public String toFullString(){
     return year+"年";
   }
-}
\ No newline at end of file
+}
diff --git a/src/main/java/com/nlf/calendar/util/LunarUtil.java b/src/main/java/com/nlf/calendar/util/LunarUtil.java
index 2a94403..295401c 100644
--- a/src/main/java/com/nlf/calendar/util/LunarUtil.java
+++ b/src/main/java/com/nlf/calendar/util/LunarUtil.java
@@ -4,8 +4,8 @@ import java.util.HashMap;
 import java.util.Map;
 
 /**
- * 农历工具
- * 
+ * 农历工具，基准日期为1900年十一月十一，对应阳历1901年1月1日，最远仅支持到2099年
+ *
  * @author 6tail
  *
  */
@@ -204,9 +204,9 @@ public class LunarUtil{
 
   /**
    * 获取指定年月的下一个月是第几月
-   * @param y 年
-   * @param m 月
-   * @return 1到12，闰月为负
+   * @param y 农历年
+   * @param m 农历月，闰月为负数
+   * @return 1到12，闰月为负数
    */
   public static int nextMonth(int y,int m){
     int n = Math.abs(m)+1;
@@ -218,19 +218,20 @@ public class LunarUtil{
         n = -m;
       }
     }
-    if(n==13) n = 1;
+    if(n==13){
+      n = 1;
+    }
     return n;
   }
 
   /**
    * 获取某年某月有多少天
-   * 
-   * @param year 年
-   * @param month 月
+   *
+   * @param year 农历年
+   * @param month 农历月，闰月为负数
    * @return 天数
    */
   public static int getDaysOfMonth(int year,int month){
-    // 注意：闰月 lunarMonth < 0
     int index = year-BASE_YEAR+BASE_INDEX;
     int v,l,d=30;
     if(1<=month&&month<=8){
@@ -262,4 +263,4 @@ public class LunarUtil{
     }
     return d;
   }
-}
\ No newline at end of file
+}
diff --git a/src/main/java/com/nlf/calendar/util/SolarUtil.java b/src/main/java/com/nlf/calendar/util/SolarUtil.java
index e5c6ab3..e66e64b 100644
--- a/src/main/java/com/nlf/calendar/util/SolarUtil.java
+++ b/src/main/java/com/nlf/calendar/util/SolarUtil.java
@@ -5,9 +5,9 @@ import java.util.HashMap;
 import java.util.Map;
 
 /**
- * 阳历工具
- * @author 6tail
+ * 阳历工具，基准日期为1901年1月1日，对应农历1900年十一月十一
  *
+ * @author 6tail
  */
 public class SolarUtil{
   /** 阳历基准年 */
@@ -57,21 +57,27 @@ public class SolarUtil{
 
   /**
    * 是否闰年
-   * 
+   *
    * @param year 年
    * @return true/false 闰年/非闰年
    */
   public static boolean isLeapYear(int year){
     boolean leap = false;
-    if(year%4==0) leap = true;
-    if(year%100==0) leap = false;
-    if(year%400==0) leap = true;
+    if(year%4==0){
+      leap = true;
+    }
+    if(year%100==0){
+      leap = false;
+    }
+    if(year%400==0){
+      leap = true;
+    }
     return leap;
   }
 
   /**
    * 获取某年某月有多少天
-   * 
+   *
    * @param year 年
    * @param month 月
    * @return 天数
@@ -99,6 +105,6 @@ public class SolarUtil{
     Calendar c = Calendar.getInstance();
     c.set(year,month-1,1);
     int week = c.get(Calendar.DAY_OF_WEEK)-1;
-    return (int)Math.ceil((days+week-start)/7D);
+    return (int)Math.ceil((days+week-start)*1D/WEEK.length);
   }
-}
\ No newline at end of file
+}
diff --git a/src/test/java/test/HalfYearTest.java b/src/test/java/test/HalfYearTest.java
new file mode 100644
index 0000000..891603a
--- /dev/null
+++ b/src/test/java/test/HalfYearTest.java
@@ -0,0 +1,24 @@
+package test;
+
+import com.nlf.calendar.SolarHalfYear;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * 半年测试
+ *
+ * @author 6tail
+ */
+public class HalfYearTest {
+
+  @Test
+  public void test(){
+    SolarHalfYear halfYear = new SolarHalfYear(2019,5);
+    Assert.assertEquals("2019.1",halfYear.toString());
+    Assert.assertEquals("2019年上半年",halfYear.toFullString());
+
+    Assert.assertEquals("2019.2",halfYear.next(1).toString());
+    Assert.assertEquals("2019年下半年",halfYear.next(1).toFullString());
+  }
+
+}
diff --git a/src/test/java/test/LunarTest.java b/src/test/java/test/LunarTest.java
new file mode 100644
index 0000000..21ab648
--- /dev/null
+++ b/src/test/java/test/LunarTest.java
@@ -0,0 +1,23 @@
+package test;
+
+import com.nlf.calendar.Lunar;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * 农历测试
+ *
+ * @author 6tail
+ */
+public class LunarTest {
+
+  @Test
+  public void test(){
+    Lunar date = new Lunar(2019,3,27);
+    Assert.assertEquals("己亥年叁月廿七",date.toString());
+    Assert.assertEquals("己亥年叁月廿七 猪年 西方白虎 娄金狗",date.toFullString());
+    Assert.assertEquals("2019-05-01",date.getSolar().toString());
+    Assert.assertEquals("2019-05-01 星期三 (劳动节) 金牛座",date.getSolar().toFullString());
+  }
+
+}
diff --git a/src/test/java/test/MonthTest.java b/src/test/java/test/MonthTest.java
new file mode 100644
index 0000000..7a91778
--- /dev/null
+++ b/src/test/java/test/MonthTest.java
@@ -0,0 +1,24 @@
+package test;
+
+import com.nlf.calendar.SolarMonth;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * 月份测试
+ *
+ * @author 6tail
+ */
+public class MonthTest {
+
+  @Test
+  public void test(){
+    SolarMonth month = new SolarMonth(2019,5);
+    Assert.assertEquals("2019-5",month.toString());
+    Assert.assertEquals("2019年5月",month.toFullString());
+
+    Assert.assertEquals("2019-6",month.next(1).toString());
+    Assert.assertEquals("2019年6月",month.next(1).toFullString());
+  }
+
+}
diff --git a/src/test/java/test/SeasonTest.java b/src/test/java/test/SeasonTest.java
new file mode 100644
index 0000000..2a115b8
--- /dev/null
+++ b/src/test/java/test/SeasonTest.java
@@ -0,0 +1,24 @@
+package test;
+
+import com.nlf.calendar.SolarSeason;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * 季度测试
+ *
+ * @author 6tail
+ */
+public class SeasonTest {
+
+  @Test
+  public void test(){
+    SolarSeason season = new SolarSeason(2019,5);
+    Assert.assertEquals("2019.2",season.toString());
+    Assert.assertEquals("2019年2季度",season.toFullString());
+
+    Assert.assertEquals("2019.3",season.next(1).toString());
+    Assert.assertEquals("2019年3季度",season.next(1).toFullString());
+  }
+
+}
diff --git a/src/test/java/test/SolarTest.java b/src/test/java/test/SolarTest.java
new file mode 100644
index 0000000..0ceaf98
--- /dev/null
+++ b/src/test/java/test/SolarTest.java
@@ -0,0 +1,23 @@
+package test;
+
+import com.nlf.calendar.Solar;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * 阳历测试
+ *
+ * @author 6tail
+ */
+public class SolarTest {
+
+  @Test
+  public void test(){
+    Solar date = new Solar(2019,5,1);
+    Assert.assertEquals("2019-05-01",date.toString());
+    Assert.assertEquals("2019-05-01 星期三 (劳动节) 金牛座",date.toFullString());
+    Assert.assertEquals("己亥年叁月廿七",date.getLunar().toString());
+    Assert.assertEquals("己亥年叁月廿七 猪年 西方白虎 娄金狗",date.getLunar().toFullString());
+  }
+
+}
diff --git a/src/test/java/test/WeekTest.java b/src/test/java/test/WeekTest.java
new file mode 100644
index 0000000..fd79e4b
--- /dev/null
+++ b/src/test/java/test/WeekTest.java
@@ -0,0 +1,44 @@
+package test;
+
+import com.nlf.calendar.SolarWeek;
+import com.nlf.calendar.util.SolarUtil;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * 周测试
+ *
+ * @author 6tail
+ */
+public class WeekTest {
+
+  @Test
+  public void testFromMonday(){
+    //一周的开始从星期一开始计
+    int start = 1;
+    SolarWeek week = new SolarWeek(2019,5,1,start);
+    Assert.assertEquals("2019.5.1",week.toString());
+    Assert.assertEquals("2019年5月第1周",week.toFullString());
+    //当月共几周
+    Assert.assertEquals(5,SolarUtil.getWeeksOfMonth(week.getYear(),week.getMonth(),start));
+    //当周第一天
+    Assert.assertEquals("2019-04-29",week.getFirstDay().toString());
+    //当周第一天（本月）
+    Assert.assertEquals("2019-05-01",week.getFirstDayInMonth().toString());
+  }
+
+  @Test
+  public void testFromSunday(){
+    //一周的开始从星期日开始计
+    int start = 0;
+    SolarWeek week = new SolarWeek(2019,5,1,start);
+    Assert.assertEquals("2019.5.1",week.toString());
+    Assert.assertEquals("2019年5月第1周",week.toFullString());
+    //当月共几周
+    Assert.assertEquals(5,SolarUtil.getWeeksOfMonth(week.getYear(),week.getMonth(),start));
+    //当周第一天
+    Assert.assertEquals("2019-04-28",week.getFirstDay().toString());
+    //当周第一天（本月）
+    Assert.assertEquals("2019-05-01",week.getFirstDayInMonth().toString());
+  }
+}
diff --git a/src/test/java/test/YearTest.java b/src/test/java/test/YearTest.java
new file mode 100644
index 0000000..817887d
--- /dev/null
+++ b/src/test/java/test/YearTest.java
@@ -0,0 +1,24 @@
+package test;
+
+import com.nlf.calendar.SolarYear;
+import org.junit.Assert;
+import org.junit.Test;
+
+/**
+ * 年份测试
+ *
+ * @author 6tail
+ */
+public class YearTest {
+
+  @Test
+  public void test(){
+    SolarYear year = new SolarYear(2019);
+    Assert.assertEquals("2019",year.toString());
+    Assert.assertEquals("2019年",year.toFullString());
+
+    Assert.assertEquals("2020",year.next(1).toString());
+    Assert.assertEquals("2020年",year.next(1).toFullString());
+  }
+
+}