diff --git a/jetlinks-manager/visualization-manager/src/test/java/org/jetlinks/pro/io/utils/FileUtilsTest.java b/jetlinks-manager/visualization-manager/src/test/java/org/jetlinks/pro/io/utils/FileUtilsTest.java
deleted file mode 100644
index 1ae52ede..00000000
--- a/jetlinks-manager/visualization-manager/src/test/java/org/jetlinks/pro/io/utils/FileUtilsTest.java
+++ /dev/null
@@ -1,21 +0,0 @@
-package org.jetlinks.pro.io.utils;
-
-import org.junit.jupiter.api.Test;
-
-import static org.junit.jupiter.api.Assertions.*;
-
-class FileUtilsTest {
-
-
-    @Test
-    void test(){
-        assertEquals(FileUtils.getExtension("test.xlsx"),"xlsx");
-        assertEquals(FileUtils.getExtension("test.xlsx?name=abc.a"),"xlsx");
-        assertEquals(FileUtils.getExtension("test.xlsx#name=abc.a"),"xlsx");
-        assertEquals(FileUtils.getExtension("test.xlsx?id=a.a&name=a#name=abc.a"),"xlsx");
-
-        assertEquals(FileUtils.getExtension("test.xlsx?id=a.a&name=a#name=abc.a"),"xlsx");
-
-    }
-
-}
\ No newline at end of file