Merge pull request #3441 from lanluyug/v6-dev

ChineseDate类添加hashcode与equals方法及其单元测试

hutool-core/src/main/java/org/dromara/hutool/core/date/chinese/ChineseDate.java

@@ -403,6 +403,27 @@ public class ChineseDate {
 		return String.format("%s%s年 %s%s", getCyclical(), getChineseZodiac(), getChineseMonthName(), getChineseDay());
 	}
 
+	@Override
+	public int hashCode() {
+		return getChineseDay().hashCode() ^ getChineseMonth().hashCode()
+			^ Integer.valueOf(getChineseYear()).hashCode();
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj) {
+			return true;
+		}
+		if (obj instanceof ChineseDate) {
+			ChineseDate other = (ChineseDate) obj;
+			return day == other.day
+				&& month == other.month
+				&& year == other.year
+				&& isLeapMonth == other.isLeapMonth;
+		}
+		return false;
+	}
+
 	// ------------------------------------------------------- private method start
 
 	/**

hutool-core/src/test/java/org/dromara/hutool/core/date/ChineseDateTest.java

@@ -174,4 +174,23 @@ public class ChineseDateTest {
 		chineseDate = new ChineseDate(1998, 5, 1, false);
 		Assertions.assertEquals("1998-05-26 00:00:00", chineseDate.getGregorianDate().toString());
 	}
+
+	@Test
+	public void equalsTest(){
+		// 二月初一
+		Date date1 = new Date(2023 - 1900, 1, 20);
+		// 润二月初一
+		Date date2 = new Date(2023 - 1900, 2, 22);
+
+		ChineseDate chineseDate1 = new ChineseDate(date1);
+		ChineseDate chineseDate2 = new ChineseDate(date2);
+		ChineseDate chineseDate3 = new ChineseDate(date2);
+
+		Assertions.assertEquals("2023-02-01", chineseDate1.toStringNormal());
+		Assertions.assertEquals("2023-02-01", chineseDate2.toStringNormal());
+		Assertions.assertEquals("2023-02-01", chineseDate3.toStringNormal());
+
+		Assertions.assertNotEquals(chineseDate1, chineseDate2);
+		Assertions.assertEquals(chineseDate2, chineseDate3);
+	}
 }