diff --git a/hutool-core/src/test/java/cn/hutool/core/date/DateTimeTest.java b/hutool-core/src/test/java/cn/hutool/core/date/DateTimeTest.java
index d35053b52..3a0724cc1 100644
--- a/hutool-core/src/test/java/cn/hutool/core/date/DateTimeTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/date/DateTimeTest.java
@@ -105,6 +105,17 @@ public class DateTimeTest {
 		Assert.assertEquals("2017/01/05", dateStr);
 	}
 
+	@Test
+	public void toStringTest2() {
+		DateTime dateTime = new DateTime("2017-01-05 12:34:23", DatePattern.NORM_DATETIME_FORMAT);
+
+		String dateStr = dateTime.toString(DatePattern.UTC_WITH_ZONE_OFFSET_PATTERN);
+		Assert.assertEquals("2017-01-05T12:34:23+0800", dateStr);
+
+		dateStr = dateTime.toString(DatePattern.UTC_WITH_XXX_OFFSET_PATTERN);
+		Assert.assertEquals("2017-01-05T12:34:23+08:00", dateStr);
+	}
+
 	@Test
 	public void monthTest() {
 		//noinspection ConstantConditions