diff --git a/apm-sniffer/apm-agent-core/src/test/java/org/skywalking/apm/agent/core/logging/core/WriterFactoryTest.java b/apm-sniffer/apm-agent-core/src/test/java/org/skywalking/apm/agent/core/logging/core/WriterFactoryTest.java
deleted file mode 100644
index 68efb9ee5e91da15647597efb60743f7530ac986..0000000000000000000000000000000000000000
--- a/apm-sniffer/apm-agent-core/src/test/java/org/skywalking/apm/agent/core/logging/core/WriterFactoryTest.java
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- * Copyright 2017, OpenSkywalking Organization All rights reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *
- * Project repository: https://github.com/OpenSkywalking/skywalking
- */
-
-package org.skywalking.apm.agent.core.logging.core;
-
-import org.junit.AfterClass;
-import org.junit.Assert;
-import org.junit.BeforeClass;
-import org.junit.Test;
-import org.skywalking.apm.agent.core.conf.Config;
-
-import java.io.PrintStream;
-
-/**
- * Created by wusheng on 2017/2/28.
- */
-public class WriterFactoryTest {
-    private static PrintStream ERR_REF;
-
-    @BeforeClass
-    public static void initAndHoldOut() {
-        ERR_REF = System.err;
-    }
-
-    /**
-     * During this test case,
-     * reset {@link System#out} to a Mock object, for avoid a console system.error.
-     */
-    @Test
-    public void testGetLogWriter() {
-        Config.Logging.DIR = "/only/test/folder";
-        Assert.assertTrue(WriterFactory.getLogWriter() instanceof FileWriter);
-    }
-
-    @AfterClass
-    public static void reset() {
-        Config.Logging.DIR = "";
-        System.setErr(ERR_REF);
-    }
-}