diff --git a/wicket-core/src/test/java/org/apache/wicket/core/request/mapper/AbstractResourceReferenceMapperOwnTest.java b/wicket-core/src/test/java/org/apache/wicket/core/request/mapper/AbstractResourceReferenceMapperOwnTest.java
deleted file mode 100644
index 104d2f90408..00000000000
--- a/wicket-core/src/test/java/org/apache/wicket/core/request/mapper/AbstractResourceReferenceMapperOwnTest.java
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You 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.
- */
-package org.apache.wicket.core.request.mapper;
-
-import static org.junit.jupiter.api.Assertions.assertEquals;
-
-import org.apache.wicket.request.IRequestHandler;
-import org.apache.wicket.request.Request;
-import org.apache.wicket.request.Url;
-import org.apache.wicket.resource.ResourceUtil;
-import org.junit.jupiter.api.Test;
-
-/**
- * Tests for AbstractResourceReferenceMapper's own methods
- */
-class AbstractResourceReferenceMapperOwnTest
-{
-	@Test
-	void testEscapeAttributesSeparator() throws Exception
-	{
-		AbstractResourceReferenceMapper mapper = new Mapper();
-		CharSequence escaped = ResourceUtil.escapeAttributesSeparator("my-style~is~~cool");
-		assertEquals("my~style~~is~~~~cool", escaped.toString());
-	}
-
-	@Test
-	void testUnescapeAttributesSeparator() throws Exception
-	{
-		AbstractResourceReferenceMapper mapper = new Mapper();
-		CharSequence escaped = ResourceUtil.unescapeAttributesSeparator("my~style~~is~~~~cool");
-		assertEquals("my-style~is~~cool", escaped.toString());
-	}
-
-	/**
-	 * A non-abstract class used for the tests
-	 */
-	private static class Mapper extends AbstractResourceReferenceMapper
-	{
-		public IRequestHandler mapRequest(Request request)
-		{
-			return null;
-		}
-
-		public int getCompatibilityScore(Request request)
-		{
-			return 0;
-		}
-
-		public Url mapHandler(IRequestHandler requestHandler)
-		{
-			return null;
-		}
-	}
-}