rwaldhoff 2003/11/24 16:18:58
Modified: functor/src/test/org/apache/commons/functor/core
TestAll.java
Added: functor/src/test/org/apache/commons/functor/core
TestLimit.java
functor/src/java/org/apache/commons/functor/core Limit.java
Log:
add Limit and tests
Revision Changes Path
1.7 +3 -2
jakarta-commons-sandbox/functor/src/test/org/apache/commons/functor/core/TestAll.java
Index: TestAll.java
===================================================================
RCS file:
/home/cvs/jakarta-commons-sandbox/functor/src/test/org/apache/commons/functor/core/TestAll.java,v
retrieving revision 1.6
retrieving revision 1.7
diff -u -r1.6 -r1.7
--- TestAll.java 24 Feb 2003 11:48:09 -0000 1.6
+++ TestAll.java 25 Nov 2003 00:18:58 -0000 1.7
@@ -86,6 +86,7 @@
suite.addTest(TestIdentityPredicate.suite());
suite.addTest(TestLeftIdentityPredicate.suite());
suite.addTest(TestRightIdentityPredicate.suite());
+ suite.addTest(TestLimit.suite());
suite.addTest(org.apache.commons.functor.core.composite.TestAll.suite());
suite.addTest(org.apache.commons.functor.core.collection.TestAll.suite());
1.1
jakarta-commons-sandbox/functor/src/test/org/apache/commons/functor/core/TestLimit.java
Index: TestLimit.java
===================================================================
/*
* $Header:
/home/cvs/jakarta-commons-sandbox/functor/src/test/org/apache/commons/functor/core/TestLimit.java,v
1.1 2003/11/25 00:18:58 rwaldhoff Exp $
* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 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 acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments 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 [EMAIL PROTECTED]
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, 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.functor.core;
import junit.framework.Test;
import junit.framework.TestSuite;
import org.apache.commons.functor.BaseFunctorTest;
import org.apache.commons.functor.BinaryPredicate;
import org.apache.commons.functor.Predicate;
import org.apache.commons.functor.UnaryPredicate;
/**
* @version $Revision: 1.1 $ $Date: 2003/11/25 00:18:58 $
* @author Rodney Waldhoff
*/
public class TestLimit extends BaseFunctorTest {
// Conventional
// ------------------------------------------------------------------------
public TestLimit(String testName) {
super(testName);
}
public static Test suite() {
return new TestSuite(TestLimit.class);
}
// Functor Testing Framework
// ------------------------------------------------------------------------
protected Object makeFunctor() {
return new Limit(3);
}
// Lifecycle
// ------------------------------------------------------------------------
// Tests
// ------------------------------------------------------------------------
public void testZero() throws Exception {
Predicate p = new Limit(0);
assertTrue(! p.test());
assertTrue(! p.test());
assertTrue(! p.test());
}
public void testBadArgs() throws Exception {
try {
new Limit(-1);
fail("Expected IllegalArgumentException");
} catch(IllegalArgumentException e) {
// expected
}
}
public void testTestNilary() throws Exception {
Predicate p = new Limit(3);
assertTrue(p.test());
assertTrue(p.test());
assertTrue(p.test());
assertTrue(! p.test());
}
public void testTestUnary() throws Exception {
UnaryPredicate p = new Limit(3);
assertTrue(p.test(null));
assertTrue(p.test(null));
assertTrue(p.test(null));
assertTrue(! p.test(null));
}
public void testTestBinary() throws Exception {
BinaryPredicate p = new Limit(3);
assertTrue(p.test(null,null));
assertTrue(p.test(null,null));
assertTrue(p.test(null,null));
assertTrue(! p.test(null,null));
}
}
1.1
jakarta-commons-sandbox/functor/src/java/org/apache/commons/functor/core/Limit.java
Index: Limit.java
===================================================================
/*
* $Header:
/home/cvs/jakarta-commons-sandbox/functor/src/java/org/apache/commons/functor/core/Limit.java,v
1.1 2003/11/25 00:18:58 rwaldhoff Exp $
* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 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 acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments 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 [EMAIL PROTECTED]
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, 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.functor.core;
import org.apache.commons.functor.BinaryPredicate;
import org.apache.commons.functor.Predicate;
import org.apache.commons.functor.UnaryPredicate;
/**
* A predicate that returns <code>true</code>
* the first <i>n</i> times it is invoked.
*
* @since 1.0
* @version $Revision: 1.1 $ $Date: 2003/11/25 00:18:58 $
* @author Jason Horman ([EMAIL PROTECTED])
* @author Rodney Waldhoff
*/
public final class Limit implements Predicate, UnaryPredicate, BinaryPredicate {
public Limit(int count) {
if(count < 0) {
throw new IllegalArgumentException("Argument must be a non-negative
integer.");
}
this.max = count;
}
public boolean test() {
// stop incremeting when we've hit max, so we don't loop around
if(current < max) {
current++;
return true;
} else {
return false;
}
}
public boolean test(Object obj) {
return test();
}
public boolean test(Object a, Object b) {
return test();
}
public String toString() {
return "Limit<" + max + ">";
}
// instance variables
//---------------------------------------------------------------
private int max;
private int current = 0;
}
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