Add UnmodifiableMapEntry
git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/collections/trunk@131315 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Stephen Colebourne
parent
c4b3f3ad02
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/*
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* $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//collections/src/java/org/apache/commons/collections/pairs/Attic/UnmodifiableMapEntry.java,v 1.1 2003/11/02 17:06:58 scolebourne Exp $
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* ====================================================================
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*
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* The Apache Software License, Version 1.1
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*
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* Copyright (c) 2001-2003 The Apache Software Foundation. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution, if
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* any, must include the following acknowledgement:
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* "This product includes software developed by the
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* Apache Software Foundation (http://www.apache.org/)."
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* Alternately, this acknowledgement may appear in the software itself,
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* if and wherever such third-party acknowledgements normally appear.
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*
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* 4. The names "The Jakarta Project", "Commons", and "Apache Software
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* Foundation" must not be used to endorse or promote products derived
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* from this software without prior written permission. For written
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* permission, please contact apache@apache.org.
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*
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* 5. Products derived from this software may not be called "Apache"
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* nor may "Apache" appear in their names without prior written
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* permission of the Apache Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*
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*/
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package org.apache.commons.collections.pairs;
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import java.util.Map;
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import org.apache.commons.collections.Unmodifiable;
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/**
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* A {@link java.util.Map.Entry} that throws UnsupportedOperationException
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* when <code>setValue</code> is called.
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*
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* @since Commons Collections 3.0
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* @version $Revision: 1.1 $ $Date: 2003/11/02 17:06:58 $
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*
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* @author Stephen Colebourne
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*/
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public final class UnmodifiableMapEntry extends AbstractMapEntry implements Unmodifiable {
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/**
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* Constructs a new entry with the specified key and given value.
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*
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* @param key the key for the entry, may be null
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* @param value the value for the entry, may be null
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*/
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public UnmodifiableMapEntry(final Object key, final Object value) {
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super(key, value);
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}
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/**
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* Constructs a new entry from the specified KeyValue.
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*
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* @param pair the pair to copy, must not be null
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* @throws NullPointerException if the entry is null
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*/
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public UnmodifiableMapEntry(final KeyValue pair) {
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super(pair.getKey(), pair.getValue());
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}
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/**
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* Constructs a new entry from the specified MapEntry.
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*
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* @param entry the entry to copy, must not be null
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* @throws NullPointerException if the entry is null
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*/
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public UnmodifiableMapEntry(final Map.Entry entry) {
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super(entry.getKey(), entry.getValue());
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}
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/**
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* Throws UnsupportedOperationException.
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*
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* @param value the new value
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* @return the previous value
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* @throws UnsupportedOperationException always
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*/
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public Object setValue(Object value) {
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throw new UnsupportedOperationException("setValue() is not supported");
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}
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}
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@ -1,5 +1,5 @@
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/*
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* $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//collections/src/test/org/apache/commons/collections/pairs/Attic/TestAll.java,v 1.1 2003/10/01 22:36:49 scolebourne Exp $
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* $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//collections/src/test/org/apache/commons/collections/pairs/Attic/TestAll.java,v 1.2 2003/11/02 17:06:59 scolebourne Exp $
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* ====================================================================
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*
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* The Apache Software License, Version 1.1
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@ -65,7 +65,7 @@ import junit.framework.TestSuite;
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* Entry point for key-value test cases.
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*
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* @since Commons Collections 3.0
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* @version $Revision: 1.1 $ $Date: 2003/10/01 22:36:49 $
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* @version $Revision: 1.2 $ $Date: 2003/11/02 17:06:59 $
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*
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* @author Neil O'Toole
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*/
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@ -85,6 +85,7 @@ public class TestAll extends TestCase {
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suite.addTest(TestDefaultKeyValue.suite());
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suite.addTest(TestDefaultMapEntry.suite());
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suite.addTest(TestUnmodifiableMapEntry.suite());
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return suite;
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}
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@ -0,0 +1,159 @@
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/*
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* $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//collections/src/test/org/apache/commons/collections/pairs/Attic/TestUnmodifiableMapEntry.java,v 1.1 2003/11/02 17:06:59 scolebourne Exp $
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* ====================================================================
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*
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* The Apache Software License, Version 1.1
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*
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* Copyright (c) 2001-2003 The Apache Software Foundation. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution, if
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* any, must include the following acknowledgement:
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* "This product includes software developed by the
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* Apache Software Foundation (http://www.apache.org/)."
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* Alternately, this acknowledgement may appear in the software itself,
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* if and wherever such third-party acknowledgements normally appear.
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*
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* 4. The names "The Jakarta Project", "Commons", and "Apache Software
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* Foundation" must not be used to endorse or promote products derived
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* from this software without prior written permission. For written
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* permission, please contact apache@apache.org.
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*
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* 5. Products derived from this software may not be called "Apache"
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* nor may "Apache" appear in their names without prior written
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* permission of the Apache Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
|
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*
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*/
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package org.apache.commons.collections.pairs;
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import java.util.Map;
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import junit.framework.Test;
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import junit.framework.TestSuite;
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import org.apache.commons.collections.Unmodifiable;
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/**
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* Test the UnmodifiableMapEntry class.
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*
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* @since Commons Collections 3.0
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* @version $Revision: 1.1 $ $Date: 2003/11/02 17:06:59 $
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*
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* @author Neil O'Toole
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*/
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public class TestUnmodifiableMapEntry extends AbstractTestMapEntry {
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public TestUnmodifiableMapEntry(String testName) {
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super(testName);
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}
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public static void main(String[] args) {
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junit.textui.TestRunner.run(TestUnmodifiableMapEntry.class);
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}
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public static Test suite() {
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return new TestSuite(TestUnmodifiableMapEntry.class);
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}
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//-----------------------------------------------------------------------
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/**
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* Make an instance of Map.Entry with the default (null) key and value.
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* Subclasses should override this method to return a Map.Entry
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* of the type being tested.
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*/
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public Map.Entry makeMapEntry() {
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return new UnmodifiableMapEntry(null, null);
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}
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/**
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* Make an instance of Map.Entry with the specified key and value.
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* Subclasses should override this method to return a Map.Entry
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* of the type being tested.
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*/
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public Map.Entry makeMapEntry(Object key, Object value) {
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return new UnmodifiableMapEntry(key, value);
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}
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//-----------------------------------------------------------------------
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/**
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* Subclasses should override this method.
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*
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*/
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public void testConstructors() {
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// 1. test key-value constructor
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Map.Entry entry = new UnmodifiableMapEntry(key, value);
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assertSame(key, entry.getKey());
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assertSame(value, entry.getValue());
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// 2. test pair constructor
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KeyValue pair = new DefaultKeyValue(key, value);
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entry = new UnmodifiableMapEntry(pair);
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assertSame(key, entry.getKey());
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assertSame(value, entry.getValue());
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// 3. test copy constructor
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Map.Entry entry2 = new UnmodifiableMapEntry(entry);
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assertSame(key, entry2.getKey());
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assertSame(value, entry2.getValue());
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assertTrue(entry instanceof Unmodifiable);
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}
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public void testAccessorsAndMutators() {
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Map.Entry entry = makeMapEntry(key, value);
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assertSame(key, entry.getKey());
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assertSame(value, entry.getValue());
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// check that null doesn't do anything funny
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entry = makeMapEntry(null, null);
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assertSame(null, entry.getKey());
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assertSame(null, entry.getValue());
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}
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public void testSelfReferenceHandling() {
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// block
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}
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public void testUnmodifiable() {
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Map.Entry entry = makeMapEntry();
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try {
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entry.setValue(null);
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fail();
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} catch (UnsupportedOperationException ex) {}
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}
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}
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