From 7380d5ce9118c2ad81ffb2c80bd76ff7b0fd5a66 Mon Sep 17 00:00:00 2001
From: Looly <loolly@gmail.com>
Date: Tue, 19 Apr 2022 19:10:38 +0800
Subject: [PATCH] add test

---
 .../cn/hutool/core/text/CharSequenceUtilTest.java    | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/hutool-core/src/test/java/cn/hutool/core/text/CharSequenceUtilTest.java b/hutool-core/src/test/java/cn/hutool/core/text/CharSequenceUtilTest.java
index 60e8d8099..2672c628b 100644
--- a/hutool-core/src/test/java/cn/hutool/core/text/CharSequenceUtilTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/text/CharSequenceUtilTest.java
@@ -148,4 +148,16 @@ public class CharSequenceUtilTest {
 		Assert.assertEquals("ABCde", CharSequenceUtil.removeSuffixIgnoreCase("ABCde", "ABCdef"));
 		Assert.assertNull(CharSequenceUtil.removeSuffixIgnoreCase(null, "ABCdef"));
 	}
+
+	@Test
+	public void trimToNullTest(){
+		String a = "  ";
+		Assert.assertNull(CharSequenceUtil.trimToNull(a));
+
+		a = "";
+		Assert.assertNull(CharSequenceUtil.trimToNull(a));
+
+		a = null;
+		Assert.assertNull(CharSequenceUtil.trimToNull(a));
+	}
 }