diff --git a/yudao-module-iot/yudao-module-iot-biz/src/test/java/cn/iocoder/yudao/module/iot/framework/tdengine/core/TDengineTableFieldTest.java b/yudao-module-iot/yudao-module-iot-biz/src/test/java/cn/iocoder/yudao/module/iot/framework/tdengine/core/TDengineTableFieldTest.java
new file mode 100644
index 0000000..df2cb42
--- /dev/null
+++ b/yudao-module-iot/yudao-module-iot-biz/src/test/java/cn/iocoder/yudao/module/iot/framework/tdengine/core/TDengineTableFieldTest.java
@@ -0,0 +1,27 @@
+package cn.iocoder.yudao.module.iot.framework.tdengine.core;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
+public class TDengineTableFieldTest {
+
+    @Test
+    public void testBuildFieldName() {
+        assertEquals("ua", TDengineTableField.buildFieldName("Ua"));
+        assertEquals("pf_t", TDengineTableField.buildFieldName("PfT"));
+        assertEquals("pt", TDengineTableField.buildFieldName("PT"));
+        assertEquals("pa", TDengineTableField.buildFieldName("PA"));
+        assertEquals("geo_location", TDengineTableField.buildFieldName("GeoLocation"));
+        assertEquals("light_status", TDengineTableField.buildFieldName("LightStatus"));
+    }
+
+    @Test
+    public void testBuildFieldName_blank() {
+        assertNull(TDengineTableField.buildFieldName(null));
+        assertEquals("", TDengineTableField.buildFieldName(""));
+        assertEquals(" ", TDengineTableField.buildFieldName(" "));
+    }
+
+}