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Add tests for pairs package 

git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/collections/trunk@131213 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Stephen Colebourne 2003-10-01 22:36:49 +00:00
parent 0b58a2fb6b
commit 63a4d98529
5 changed files with 679 additions and 2 deletions
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5
src/test/org/apache/commons/collections/TestAllPackages.java
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@ -1,5 +1,5 @@
/*
* $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//collections/src/test/org/apache/commons/collections/TestAllPackages.java,v 1.3 2003/09/07 16:49:41 scolebourne Exp $
* $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//collections/src/test/org/apache/commons/collections/TestAllPackages.java,v 1.4 2003/10/01 22:36:49 scolebourne Exp $
* ====================================================================
*
* The Apache Software License, Version 1.1
@ -64,7 +64,7 @@ import junit.framework.TestSuite;
/**
* Entry point for all Collections project tests.
*
* @version $Revision: 1.3 $ $Date: 2003/09/07 16:49:41 $
* @version $Revision: 1.4 $ $Date: 2003/10/01 22:36:49 $
*
* @author Stephen Colebourne
*/
@ -80,6 +80,7 @@ public class TestAllPackages extends TestCase {
suite.addTest(org.apache.commons.collections.decorators.TestAll.suite());
suite.addTest(org.apache.commons.collections.iterators.TestAll.suite());
suite.addTest(org.apache.commons.collections.observed.TestAll.suite());
suite.addTest(org.apache.commons.collections.pairs.TestAll.suite());
suite.addTest(org.apache.commons.collections.primitives.TestAll.suite());
return suite;
}

202
src/test/org/apache/commons/collections/pairs/AbstractTestMapEntry.java Normal file
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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/AbstractTestMapEntry.java,v 1.1 2003/10/01 22:36:49 scolebourne Exp $
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2001-2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowledgement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgement may appear in the software itself,
* if and wherever such third-party acknowledgements normally appear.
*
* 4. The names "The Jakarta Project", "Commons", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.commons.collections.pairs;
import java.util.HashMap;
import java.util.Map;
import junit.framework.TestCase;
/**
* Abstract tests that can be extended to test any Map.Entry implementation.
* Subclasses must implement {@link #makeMapEntry(Object, Object)} to return
* a new Map.Entry of the type being tested. Subclasses must also implement
* {@link #testConstructors()} to test the constructors of the Map.Entry
* type being tested.
*
* @since Commons Collections 3.0
* @version $Revision: 1.1 $ $Date: 2003/10/01 22:36:49 $
*
* @author Neil O'Toole
*/
public abstract class AbstractTestMapEntry extends TestCase {
protected final String key = "name";
protected final String value = "duke";
/**
* JUnit constructor.
*
* @param testName the test name
*/
public AbstractTestMapEntry(String testName) {
super(testName);
}
//-----------------------------------------------------------------------
/**
* Make an instance of Map.Entry with the default (null) key and value.
* This implementation simply calls {@link #makeMapEntry(Object, Object)}
* with null for key and value. Subclasses can override this method if desired.
*/
protected Map.Entry makeMapEntry() {
return makeMapEntry(null, null);
}
/**
* Make an instance of Map.Entry with the specified key and value.
* Subclasses should override this method to return a Map.Entry
* of the type being tested.
*/
protected abstract Map.Entry makeMapEntry(Object key, Object value);
/**
* Makes a Map.Entry of a type that's known to work correctly.
*/
protected Map.Entry makeKnownMapEntry() {
return makeKnownMapEntry(null, null);
}
/**
* Makes a Map.Entry of a type that's known to work correctly.
*/
protected Map.Entry makeKnownMapEntry(Object key, Object value) {
Map map = new HashMap(1);
map.put(key, value);
Map.Entry entry = (Map.Entry) map.entrySet().iterator().next();
return entry;
}
//-----------------------------------------------------------------------
public void testAccessorsAndMutators() {
Map.Entry entry = makeMapEntry(key, value);
assertTrue(entry.getKey() == key);
entry.setValue(value);
assertTrue(entry.getValue() == value);
// check that null doesn't do anything funny
entry = makeMapEntry(null, null);
assertTrue(entry.getKey() == null);
entry.setValue(null);
assertTrue(entry.getValue() == null);
}
/**
* Subclasses should override this method to test the
* desired behaviour of the class with respect to
* handling of self-references.
*
*/
public void testSelfReferenceHandling() {
// test that #setValue does not permit
// the MapEntry to contain itself (and thus cause infinite recursion
// in #hashCode and #toString)
Map.Entry entry = makeMapEntry();
try {
entry.setValue(entry);
fail("Should throw an IllegalArgumentException");
} catch (IllegalArgumentException iae) {
// expected to happen...
// check that the KVP's state has not changed
assertTrue(entry.getKey() == null && entry.getValue() == null);
}
}
/**
* Subclasses should provide tests for their constructors.
*
*/
public abstract void testConstructors();
public void testEqualsAndHashCode() {
// 1. test with object data
Map.Entry e1 = makeMapEntry(key, value);
Map.Entry e2 = makeKnownMapEntry(key, value);
assertTrue(e1.equals(e1));
assertTrue(e2.equals(e1));
assertTrue(e1.equals(e2));
assertTrue(e1.hashCode() == e2.hashCode());
// 2. test with nulls
e1 = makeMapEntry();
e2 = makeKnownMapEntry();
assertTrue(e1.equals(e1));
assertTrue(e2.equals(e1));
assertTrue(e1.equals(e2));
assertTrue(e1.hashCode() == e2.hashCode());
}
public void testToString() {
Map.Entry entry = makeMapEntry(key, value);
assertTrue(entry.toString().equals("[" + entry.getKey() + "=" + entry.getValue() + "]"));
// test with nulls
entry = makeMapEntry();
assertTrue(entry.toString().equals("[" + entry.getKey() + "=" + entry.getValue() + "]"));
}
}

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src/test/org/apache/commons/collections/pairs/TestAll.java Normal file
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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 $
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2001-2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowledgement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgement may appear in the software itself,
* if and wherever such third-party acknowledgements normally appear.
*
* 4. The names "The Jakarta Project", "Commons", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.commons.collections.pairs;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
/**
* Entry point for key-value test cases.
*
* @since Commons Collections 3.0
* @version $Revision: 1.1 $ $Date: 2003/10/01 22:36:49 $
*
* @author Neil O'Toole
*/
public class TestAll extends TestCase {
public TestAll(String testName) {
super(testName);
}
public static void main(String args[]) {
String[] testCaseName = { TestAll.class.getName() };
junit.textui.TestRunner.main(testCaseName);
}
public static Test suite() {
TestSuite suite = new TestSuite();
suite.addTest(TestDefaultKeyValue.suite());
suite.addTest(TestDefaultMapEntry.suite());
return suite;
}
}

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src/test/org/apache/commons/collections/pairs/TestDefaultKeyValue.java Normal file
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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/TestDefaultKeyValue.java,v 1.1 2003/10/01 22:36:49 scolebourne Exp $
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2001-2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowledgement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgement may appear in the software itself,
* if and wherever such third-party acknowledgements normally appear.
*
* 4. The names "The Jakarta Project", "Commons", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.commons.collections.pairs;
import java.util.HashMap;
import java.util.Map;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
/**
* Test the DefaultKeyValue class.
*
* @since Commons Collections 3.0
* @version $Revision: 1.1 $ $Date: 2003/10/01 22:36:49 $
*
* @author Neil O'Toole
*/
public class TestDefaultKeyValue extends TestCase {
private final String key = "name";
private final String value = "duke";
/**
* JUnit constructor.
*
* @param testName the test name
*/
public TestDefaultKeyValue(String testName) {
super(testName);
}
public static void main(String[] args) {
junit.textui.TestRunner.run(TestDefaultKeyValue.class);
}
public static Test suite() {
return new TestSuite(TestDefaultKeyValue.class);
}
//-----------------------------------------------------------------------
/**
* Make an instance of DefaultKeyValue with the default (null) key and value.
* Subclasses should override this method to return a DefaultKeyValue
* of the type being tested.
*/
protected DefaultKeyValue makeDefaultKeyValue() {
return new DefaultKeyValue(null, null);
}
/**
* Make an instance of DefaultKeyValue with the specified key and value.
* Subclasses should override this method to return a DefaultKeyValue
* of the type being tested.
*/
protected DefaultKeyValue makeDefaultKeyValue(Object key, Object value) {
return new DefaultKeyValue(key, value);
}
//-----------------------------------------------------------------------
public void testAccessorsAndMutators() {
DefaultKeyValue kv = makeDefaultKeyValue();
kv.setKey(key);
assertTrue(kv.getKey() == key);
kv.setValue(value);
assertTrue(kv.getValue() == value);
// check that null doesn't do anything funny
kv.setKey(null);
assertTrue(kv.getKey() == null);
kv.setValue(null);
assertTrue(kv.getValue() == null);
}
public void testSelfReferenceHandling() {
// test that #setKey and #setValue do not permit
// the KVP to contain itself (and thus cause infinite recursion
// in #hashCode and #toString)
DefaultKeyValue kv = makeDefaultKeyValue();
try {
kv.setKey(kv);
fail("Should throw an IllegalArgumentException");
} catch (IllegalArgumentException iae) {
// expected to happen...
// check that the KVP's state has not changed
assertTrue(kv.getKey() == null && kv.getValue() == null);
}
try {
kv.setValue(kv);
fail("Should throw an IllegalArgumentException");
} catch (IllegalArgumentException iae) {
// expected to happen...
// check that the KVP's state has not changed
assertTrue(kv.getKey() == null && kv.getValue() == null);
}
}
/**
* Subclasses should override this method to test their own constructors.
*/
public void testConstructors() {
// 1. test default constructor
DefaultKeyValue kv = new DefaultKeyValue();
assertTrue(kv.getKey() == null && kv.getValue() == null);
// 2. test key-value constructor
kv = new DefaultKeyValue(key, value);
assertTrue(kv.getKey() == key && kv.getValue() == value);
// 3. test copy constructor
DefaultKeyValue kv2 = new DefaultKeyValue(kv);
assertTrue(kv2.getKey() == key && kv2.getValue() == value);
// test that the KVPs are independent
kv.setKey(null);
kv.setValue(null);
assertTrue(kv2.getKey() == key && kv2.getValue() == value);
// 4. test Map.Entry constructor
Map map = new HashMap();
map.put(key, value);
Map.Entry entry = (Map.Entry) map.entrySet().iterator().next();
kv = new DefaultKeyValue(entry);
assertTrue(kv.getKey() == key && kv.getValue() == value);
// test that the KVP is independent of the Map.Entry
entry.setValue(null);
assertTrue(kv.getValue() == value);
}
public void testEqualsAndHashCode() {
// 1. test with object data
DefaultKeyValue kv = makeDefaultKeyValue(key, value);
DefaultKeyValue kv2 = makeDefaultKeyValue(key, value);
assertTrue(kv.equals(kv));
assertTrue(kv.equals(kv2));
assertTrue(kv.hashCode() == kv2.hashCode());
// 2. test with nulls
kv = makeDefaultKeyValue(null, null);
kv2 = makeDefaultKeyValue(null, null);
assertTrue(kv.equals(kv));
assertTrue(kv.equals(kv2));
assertTrue(kv.hashCode() == kv2.hashCode());
}
public void testToString() {
DefaultKeyValue kv = makeDefaultKeyValue(key, value);
assertTrue(kv.toString().equals("[" + kv.getKey() + "=" + kv.getValue() + "]"));
// test with nulls
kv = makeDefaultKeyValue(null, null);
assertTrue(kv.toString().equals("[" + kv.getKey() + "=" + kv.getValue() + "]"));
}
public void testToMapEntry() {
DefaultKeyValue kv = makeDefaultKeyValue(key, value);
Map map = new HashMap();
map.put(kv.getKey(), kv.getValue());
Map.Entry entry = (Map.Entry) map.entrySet().iterator().next();
assertTrue(entry.equals(kv.toMapEntry()));
assertTrue(entry.hashCode() == kv.hashCode());
}
}

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src/test/org/apache/commons/collections/pairs/TestDefaultMapEntry.java Normal file
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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/TestDefaultMapEntry.java,v 1.1 2003/10/01 22:36:49 scolebourne Exp $
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2001-2003 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowledgement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgement may appear in the software itself,
* if and wherever such third-party acknowledgements normally appear.
*
* 4. The names "The Jakarta Project", "Commons", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package org.apache.commons.collections.pairs;
import java.util.Map;
import junit.framework.Test;
import junit.framework.TestSuite;
/**
* Test the DefaultMapEntry class.
*
* @since Commons Collections 3.0
* @version $Revision: 1.1 $ $Date: 2003/10/01 22:36:49 $
*
* @author Neil O'Toole
*/
public class TestDefaultMapEntry extends AbstractTestMapEntry {
public TestDefaultMapEntry(String testName) {
super(testName);
}
public static void main(String[] args) {
junit.textui.TestRunner.run(TestDefaultMapEntry.class);
}
public static Test suite() {
return new TestSuite(TestDefaultMapEntry.class);
}
//-----------------------------------------------------------------------
/**
* Make an instance of Map.Entry with the default (null) key and value.
* Subclasses should override this method to return a Map.Entry
* of the type being tested.
*/
public Map.Entry makeMapEntry() {
return new DefaultMapEntry(null, null);
}
/**
* Make an instance of Map.Entry with the specified key and value.
* Subclasses should override this method to return a Map.Entry
* of the type being tested.
*/
public Map.Entry makeMapEntry(Object key, Object value) {
return new DefaultMapEntry(key, value);
}
//-----------------------------------------------------------------------
/**
* Subclasses should override this method.
*
*/
public void testConstructors() {
// 1. test key-value constructor
Map.Entry entry = new DefaultMapEntry(key, value);
assertSame(key, entry.getKey());
assertSame(value, entry.getValue());
// 2. test pair constructor
KeyValue pair = new DefaultKeyValue(key, value);
assertSame(key, pair.getKey());
assertSame(value, pair.getValue());
// 3. test copy constructor
Map.Entry entry2 = new DefaultMapEntry(entry);
assertSame(key, entry2.getKey());
assertSame(value, entry2.getValue());
// test that the objects are independent
entry.setValue(null);
assertSame(value, entry2.getValue());
}
public void testSelfReferenceHandling() {
Map.Entry entry = makeMapEntry();
try {
entry.setValue(entry);
assertSame(entry, entry.getValue());
} catch (Exception e) {
fail("This Map.Entry implementation supports value self-reference.");
}
}
}