add methods

hutool-core/src/test/java/cn/hutool/core/lang/TreeTest.java

@@ -37,6 +37,11 @@ public class TreeTest {
 		for (Tree<String> tree : treeNodes) {
 			Assert.assertNotNull(tree);
 		}
+
+		// 测试通过子节点查找父节点
+		final Tree<String> rootNode0 = treeNodes.get(0);
+		final Tree<String> parent = rootNode0.getChildren().get(0).getParent();
+		Assert.assertEquals(rootNode0, parent);
 	}
 
 	@Test

hutool-core/src/test/java/cn/hutool/core/lang/caller/CallerTest.java

@@ -1,10 +1,8 @@
-package cn.hutool.core.lang;
+package cn.hutool.core.lang.caller;
 
 import org.junit.Assert;
 import org.junit.Test;
 
-import cn.hutool.core.lang.caller.CallerUtil;
-
 /**
  * {@link CallerUtil} 单元测试
  * @author Looly

hutool-core/src/test/java/cn/hutool/core/lang/caller/CallerUtilTest.java

@@ -0,0 +1,16 @@
+package cn.hutool.core.lang.caller;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class CallerUtilTest {
+
+	@Test
+	public void getCallerMethodNameTest() {
+		final String callerMethodName = CallerUtil.getCallerMethodName(false);
+		Assert.assertEquals("getCallerMethodNameTest", callerMethodName);
+
+		final String fullCallerMethodName = CallerUtil.getCallerMethodName(true);
+		Assert.assertEquals("cn.hutool.core.lang.caller.CallerUtilTest.getCallerMethodNameTest", fullCallerMethodName);
+	}
+}