diff --git a/agents-flex-core/src/test/java/com/agentsflex/core/test/util/UnWrapMarkdownTest.java b/agents-flex-core/src/test/java/com/agentsflex/core/test/util/UnWrapMarkdownTest.java
new file mode 100644
index 0000000..263c353
--- /dev/null
+++ b/agents-flex-core/src/test/java/com/agentsflex/core/test/util/UnWrapMarkdownTest.java
@@ -0,0 +1,36 @@
+package com.agentsflex.core.test.util;
+
+import com.agentsflex.core.chain.node.LlmNode;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class UnWrapMarkdownTest {
+
+    @Test
+    public void testUnWrapMarkdown01() {
+        String markdown = "```**Hello**, *world*!```";
+        String expected = "**Hello**, *world*!";
+        String actual = LlmNode.unWrapMarkdown(markdown);
+        System.out.println(actual);
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testUnWrapMarkdown02() {
+        String markdown = "```\n**Hello**, *world*!\n```";
+        String expected = "**Hello**, *world*!";
+        String actual = LlmNode.unWrapMarkdown(markdown);
+        System.out.println(actual);
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testUnWrapMarkdown03() {
+        String markdown = "```json\n**Hello**, *world*!\n```";
+        String expected = "**Hello**, *world*!";
+        String actual = LlmNode.unWrapMarkdown(markdown);
+        System.out.println(actual);
+        Assert.assertEquals(expected, actual);
+    }
+
+}