src/test/java/org/apache/commons/configuration2/web/TestServletFilterConfiguration.java

/*
 * 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.commons.configuration2.web;

import static org.junit.jupiter.api.Assertions.assertThrows;

import java.util.Enumeration;
import java.util.Properties;

import javax.servlet.FilterConfig;
import javax.servlet.ServletContext;

import org.apache.commons.configuration2.AbstractConfiguration;
import org.apache.commons.configuration2.Configuration;
import org.apache.commons.configuration2.TestAbstractConfiguration;
import org.apache.commons.configuration2.convert.DefaultListDelimiterHandler;
import org.junit.jupiter.api.Test;

/**
 * Test case for the {@link ServletFilterConfiguration} class.
 */
public class TestServletFilterConfiguration extends TestAbstractConfiguration {
    private static final class MockFilterConfig implements FilterConfig {
        private final Properties parameters = new Properties();

        @Override
        public String getFilterName() {
            return null;
        }

        @Override
        public String getInitParameter(final String key) {
            return parameters.getProperty(key);
        }

        @Override
        public Enumeration<?> getInitParameterNames() {
            return parameters.keys();
        }

        @Override
        public ServletContext getServletContext() {
            return null;
        }

        public void setInitParameter(final String key, final String value) {
            parameters.setProperty(key, value);
        }
    }

    @Override
    protected AbstractConfiguration getConfiguration() {
        final MockFilterConfig config = new MockFilterConfig();
        config.setInitParameter("key1", "value1");
        config.setInitParameter("key2", "value2");
        config.setInitParameter("list", "value1, value2");
        config.setInitParameter("listesc", "value1\\,value2");

        final ServletFilterConfiguration resultConfig = new ServletFilterConfiguration(config);
        resultConfig.setListDelimiterHandler(new DefaultListDelimiterHandler(','));
        return resultConfig;
    }

    @Override
    protected AbstractConfiguration getEmptyConfiguration() {
        return new ServletFilterConfiguration(new MockFilterConfig());
    }

    @Override
    @Test
    public void testAddPropertyDirect() {
        assertThrows(UnsupportedOperationException.class, super::testAddPropertyDirect);
    }

    @Override
    @Test
    public void testClearProperty() {
        assertThrows(UnsupportedOperationException.class, super::testClearProperty);
    }

    @Test
    public void testContainsValue() {
        final Configuration config = getConfiguration();
        assertThrows(NullPointerException.class, () -> config.containsValue(null));
    }
}