fix time and add test

hutool-core/src/test/java/cn/hutool/core/convert/ConvertTest.java

@@ -140,28 +140,6 @@ public class ConvertTest {
 		Assert.assertNull(number);
 	}
 
-	@Test
-	public void toDateTest() {
-		String a = "2017-05-06";
-		Date value = Convert.toDate(a);
-		Assert.assertEquals(a, DateUtil.formatDate(value));
-
-		long timeLong = DateUtil.date().getTime();
-		Date value2 = Convert.toDate(timeLong);
-		Assert.assertEquals(timeLong, value2.getTime());
-	}
-
-	@Test
-	public void toSqlDateTest() {
-		String a = "2017-05-06";
-		java.sql.Date value = Convert.convert(java.sql.Date.class, a);
-		Assert.assertEquals("2017-05-06", value.toString());
-
-		long timeLong = DateUtil.date().getTime();
-		java.sql.Date value2 = Convert.convert(java.sql.Date.class, timeLong);
-		Assert.assertEquals(timeLong, value2.getTime());
-	}
-
 	@Test
 	public void intAndByteConvertTest() {
 		// 测试 int 转 byte

hutool-core/src/test/java/cn/hutool/core/convert/DateConvertTest.java

@@ -0,0 +1,43 @@
+package cn.hutool.core.convert;
+
+import cn.hutool.core.date.DateUtil;
+import cn.hutool.core.lang.Console;
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.Date;
+
+public class DateConvertTest {
+
+	@Test
+	public void toDateTest() {
+		String a = "2017-05-06";
+		Date value = Convert.toDate(a);
+		Assert.assertEquals(a, DateUtil.formatDate(value));
+
+		long timeLong = DateUtil.date().getTime();
+		Date value2 = Convert.toDate(timeLong);
+		Assert.assertEquals(timeLong, value2.getTime());
+	}
+
+	@Test
+	public void toDateFromLocalDateTimeTest() {
+		LocalDateTime localDateTime = LocalDateTime.parse("2017-05-06T08:30:00", DateTimeFormatter.ISO_DATE_TIME);
+		Date value = Convert.toDate(localDateTime);
+		Assert.assertNotNull(value);
+		Assert.assertEquals("2017-05-06", DateUtil.formatDate(value));
+	}
+
+	@Test
+	public void toSqlDateTest() {
+		String a = "2017-05-06";
+		java.sql.Date value = Convert.convert(java.sql.Date.class, a);
+		Assert.assertEquals("2017-05-06", value.toString());
+
+		long timeLong = DateUtil.date().getTime();
+		java.sql.Date value2 = Convert.convert(java.sql.Date.class, timeLong);
+		Assert.assertEquals(timeLong, value2.getTime());
+	}
+}

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

@@ -2,12 +2,22 @@ package cn.hutool.core.date;
 
 import cn.hutool.core.collection.CollUtil;
 import cn.hutool.core.date.BetweenFormater.Level;
-import cn.hutool.core.lang.Console;
 import org.junit.Assert;
 import org.junit.Test;
 
 import java.text.SimpleDateFormat;
-import java.util.*;
+import java.time.Instant;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+import java.time.LocalTime;
+import java.time.format.DateTimeFormatter;
+import java.util.ArrayList;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.LinkedHashSet;
+import java.util.List;
+import java.util.NoSuchElementException;
+import java.util.TimeZone;
 
 /**
  * 时间工具单元测试<br>
@@ -584,4 +594,26 @@ public class DateUtilTest {
 		String formatHttpDate = DateUtil.formatHttpDate(DateUtil.parse("2019-01-02 22:32:01"));
 		Assert.assertEquals("Wed, 02 Jan 2019 14:32:01 GMT", formatHttpDate);
 	}
+
+	@Test
+	public void toInstantTest(){
+		LocalDateTime localDateTime = LocalDateTime.parse("2017-05-06T08:30:00", DateTimeFormatter.ISO_DATE_TIME);
+		Instant instant = DateUtil.toInstant(localDateTime);
+		Assert.assertEquals("2017-05-06T00:30:00Z", instant.toString());
+
+		LocalDate localDate = localDateTime.toLocalDate();
+		instant = DateUtil.toInstant(localDate);
+		Assert.assertNotNull(instant);
+
+		LocalTime localTime = localDateTime.toLocalTime();
+		instant = DateUtil.toInstant(localTime);
+		Assert.assertNotNull(instant);
+	}
+
+	@Test
+	public void dateTest(){
+		LocalDateTime localDateTime = LocalDateTime.parse("2017-05-06T08:30:00", DateTimeFormatter.ISO_DATE_TIME);
+		DateTime date = DateUtil.date(localDateTime);
+		Assert.assertEquals("2017-05-06 08:30:00", date.toString());
+	}
 }

hutool-core/src/test/java/cn/hutool/core/util/IdcardUtilTest.java

@@ -7,6 +7,8 @@ import org.junit.Test;
 import cn.hutool.core.date.DateTime;
 import cn.hutool.core.date.DateUtil;
 
+import java.time.ZonedDateTime;
+
 /**
  * 身份证单元测试
  *