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added base class for testing iterators

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git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/collections/trunk@130580 13f79535-47bb-0310-9956-ffa450edef68
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Morgan James Delagrange 2002-02-25 23:37:48 +00:00
parent f592daad05
commit 9e1b45941d
1 changed files with 136 additions and 112 deletions
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src/test/org/apache/commons/collections/TestSingletonIterator.java
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@ -1,112 +1,136 @@
/* /*
* $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//collections/src/test/org/apache/commons/collections/Attic/TestSingletonIterator.java,v 1.1 2001/08/22 07:43:53 jstrachan Exp $ * $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//collections/src/test/org/apache/commons/collections/Attic/TestSingletonIterator.java,v 1.2 2002/02/25 23:37:48 morgand Exp $
* $Revision: 1.1 $ * $Revision: 1.2 $
* $Date: 2001/08/22 07:43:53 $ * $Date: 2002/02/25 23:37:48 $
* *
* ==================================================================== * ====================================================================
* *
* The Apache Software License, Version 1.1 * The Apache Software License, Version 1.1
* *
* Copyright (c) 1999-2001 The Apache Software Foundation. All rights * Copyright (c) 1999-2001 The Apache Software Foundation. All rights
* reserved. * reserved.
* *
* Redistribution and use in source and binary forms, with or without * Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions * modification, are permitted provided that the following conditions
* are met: * are met:
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* 1. Redistributions of source code must retain the above copyright * 1. Redistributions of source code must retain the above copyright
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* 2. Redistributions in binary form must reproduce the above copyright * 2. Redistributions in binary form must reproduce the above copyright
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* 3. The end-user documentation included with the redistribution, if * 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement: * any, must include the following acknowlegement:
* "This product includes software developed by the * "This product includes software developed by the
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* Alternately, this acknowlegement may appear in the software itself, * Alternately, this acknowlegement may appear in the software itself,
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package org.apache.commons.collections; package org.apache.commons.collections;
import junit.framework.*; import junit.framework.*;
import java.util.Iterator; import java.util.Iterator;
import java.util.NoSuchElementException; import java.util.NoSuchElementException;
/** /**
* Tests the SingletonIterator to ensure that the next() method will actually * Tests the SingletonIterator to ensure that the next() method will actually
* perform the iteration rather than the hasNext() method. * perform the iteration rather than the hasNext() method.
* *
* @author James Strachan * @author James Strachan
* @version $Id: TestSingletonIterator.java,v 1.1 2001/08/22 07:43:53 jstrachan Exp $ * @version $Id: TestSingletonIterator.java,v 1.2 2002/02/25 23:37:48 morgand Exp $
*/ */
public class TestSingletonIterator extends TestObject { public class TestSingletonIterator extends TestIterator {
private static final Object testValue = "foo"; private static final Object testValue = "foo";
public static Test suite() { public static Test suite() {
return new TestSuite(TestSingletonIterator.class); return new TestSuite(TestSingletonIterator.class);
} }
public TestSingletonIterator(String testName) { public TestSingletonIterator(String testName) {
super(testName); super(testName);
} }
/** /**
* Return a new, empty {@link Object} to used for testing. * Returns null. SingletonIterators can never be empty;
*/ * they always have exactly one element.
public Object makeObject() { *
return new SingletonIterator( testValue ); * @return null
} */
public Iterator makeEmptyIterator() {
public void testIterator() { return null;
Iterator iter = (Iterator) makeObject(); }
assertTrue( "Iterator has a first item", iter.hasNext() );
public Iterator makeFullIterator() {
Object iterValue = iter.next(); return new SingletonIterator( testValue );
assertEquals( "Iteration value is correct", testValue, iterValue ); }
assertTrue("Iterator should now be empty", ! iter.hasNext() ); /**
* Return a new, empty {@link Object} to used for testing.
try { */
Object testValue = iter.next(); public Object makeObject() {
} return makeFullIterator();
catch (Exception e) { }
assertTrue("NoSuchElementException must be thrown",
e.getClass().equals((new NoSuchElementException()).getClass())); /**
} * Whether or not we are testing an iterator that can be
} * empty. SingletonIterators are never empty;
} *
* @return false
*/
public boolean supportsEmptyIterator() {
return false;
}
public void testIterator() {
Iterator iter = (Iterator) makeObject();
assertTrue( "Iterator has a first item", iter.hasNext() );
Object iterValue = iter.next();
assertEquals( "Iteration value is correct", testValue, iterValue );
assertTrue("Iterator should now be empty", ! iter.hasNext() );
try {
Object testValue = iter.next();
}
catch (Exception e) {
assertTrue("NoSuchElementException must be thrown",
e.getClass().equals((new NoSuchElementException()).getClass()));
}
}
}