base/src/test/java/org/apache/commons/chain2/base/OverrideCommandTestCase.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.chain2.base;

import static org.hamcrest.collection.IsCollectionWithSize.hasSize;
import static org.hamcrest.collection.IsMapContaining.hasEntry;
import static org.junit.Assert.assertThat;

import java.util.HashMap;
import java.util.Map;

import org.junit.Before;
import org.junit.Test;

/**
 * @version $Id$
 */
public class OverrideCommandTestCase {


    private OverrideCommand<String, Object, Map<String, Object>> command;
    private Map<String, Object> context;

    @Before
    public void setUp() throws Exception {
        command = new OverrideCommand<String, Object, Map<String, Object>>();

        context = new HashMap<String, Object>();
        context.put("Key", "Value");
    }

    @Test
    public void nonExistingKeyDoesNotAlterContext() throws Exception {
        command.setKey("another Key");
        command.setValue("another Value");

        command.execute(context);

        assertThat(context, hasEntry("Key", (Object) "Value"));
        assertThat(context.keySet(), hasSize(1));
    }

    @Test
    public void existingKeyWillBeOverridden() throws Exception {
        command.setKey("Key");
        command.setValue("new Value");

        command.execute(context);

        assertThat(context, hasEntry("Key", (Object) "new Value"));
        assertThat(context.keySet(), hasSize(1));
    }
}