From 185764ec75cbe198044eb8a1fe74224575829539 Mon Sep 17 00:00:00 2001
From: Looly <loolly@gmail.com>
Date: Fri, 18 Jun 2021 01:56:06 +0800
Subject: [PATCH] add test

---
 .../cn/hutool/core/text/StrJoinerTest.java    | 51 +++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/hutool-core/src/test/java/cn/hutool/core/text/StrJoinerTest.java b/hutool-core/src/test/java/cn/hutool/core/text/StrJoinerTest.java
index a731894db..1a5e2df3e 100644
--- a/hutool-core/src/test/java/cn/hutool/core/text/StrJoinerTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/text/StrJoinerTest.java
@@ -1,5 +1,7 @@
 package cn.hutool.core.text;
 
+import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.collection.ListUtil;
 import org.junit.Assert;
 import org.junit.Test;
 
@@ -27,4 +29,53 @@ public class StrJoinerTest {
 		final StrJoiner append = StrJoiner.of(",");
 		Assert.assertEquals("", append.toString());
 	}
+
+	@Test
+	public void joinMultiArrayTest(){
+		final StrJoiner append = StrJoiner.of(",");
+		append.append(new Object[]{ListUtil.of("1", "2"),
+				CollUtil.newHashSet("3", "4")
+		});
+		Assert.assertEquals("1,2,3,4", append.toString());
+	}
+
+	@Test
+	public void joinNullModeTest(){
+		StrJoiner append = StrJoiner.of(",")
+				.setNullMode(StrJoiner.NullMode.IGNORE)
+				.append("1")
+				.append((Object)null)
+				.append("3");
+		Assert.assertEquals("1,3", append.toString());
+
+		append = StrJoiner.of(",")
+				.setNullMode(StrJoiner.NullMode.TO_EMPTY)
+				.append("1")
+				.append((Object)null)
+				.append("3");
+		Assert.assertEquals("1,,3", append.toString());
+
+		append = StrJoiner.of(",")
+				.setNullMode(StrJoiner.NullMode.NULL_STRING)
+				.append("1")
+				.append((Object)null)
+				.append("3");
+		Assert.assertEquals("1,null,3", append.toString());
+	}
+
+	@Test
+	public void joinWrapTest(){
+		StrJoiner append = StrJoiner.of(",", "[", "]")
+				.append("1")
+				.append("2")
+				.append("3");
+		Assert.assertEquals("[1,2,3]", append.toString());
+
+		append = StrJoiner.of(",", "[", "]")
+				.setWrapElement(true)
+				.append("1")
+				.append("2")
+				.append("3");
+		Assert.assertEquals("[1],[2],[3]", append.toString());
+	}
 }