/*
 * 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.catalina.util;

import junit.framework.TestCase;

public class TestRequestUtil extends TestCase {

    public void testURLDecodeString() {
        // %n rather than %nn should throw an IAE according to the Javadoc
        Exception exception = null;
        try {
            RequestUtil.URLDecode("%5xxxxx");
        } catch (Exception e) {
            exception = e;
        }
        assertTrue(exception instanceof IllegalArgumentException);

        // Edge case trying to trigger ArrayIndexOutOfBoundsException
        exception = null;
        try {
            RequestUtil.URLDecode("%5");
        } catch (Exception e) {
            exception = e;
        }
        assertTrue(exception instanceof IllegalArgumentException);
    }
}

/*
 * 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.catalina.util;

import junit.framework.TestCase;

public class TestRequestUtil extends TestCase {

    public void testNormalizeString() {
        assertEquals("/something",RequestUtil.normalize("//something"));
        assertEquals("/some/thing",RequestUtil.normalize("some//thing"));
        assertEquals("/something/",RequestUtil.normalize("something//"));
        assertEquals("/",RequestUtil.normalize("//"));
    }

    public void testURLDecodeString() {
        // %n rather than %nn should throw an IAE according to the Javadoc
        Exception exception = null;
        try {
            RequestUtil.URLDecode("%5xxxxx");
        } catch (Exception e) {
            exception = e;
        }
        assertTrue(exception instanceof IllegalArgumentException);

        // Edge case trying to trigger ArrayIndexOutOfBoundsException
        exception = null;
        try {
            RequestUtil.URLDecode("%5");
        } catch (Exception e) {
            exception = e;
        }
        assertTrue(exception instanceof IllegalArgumentException);
    }
}

Add a check of the edge cases for bug 49488. As expected, they all pass.