/*
* 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.collections.comparators;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import junit.framework.Test;
import junit.framework.TestSuite;
/**
* Tests for {@link BooleanComparator}.
*
* @version $Revision: 646780 $ $Date: 2008-04-10 13:48:07 +0100 (Thu, 10 Apr 2008) $
*
* @author Rodney Waldhoff
*/
public class TestBooleanComparator extends AbstractTestComparator {
// conventional
// ------------------------------------------------------------------------
public TestBooleanComparator(String testName) {
super(testName);
}
public static Test suite() {
return new TestSuite(TestBooleanComparator.class);
}
// collections testing framework
// ------------------------------------------------------------------------
public Comparator makeComparator() {
return new BooleanComparator();
}
public List getComparableObjectsOrdered() {
List list = new ArrayList();
list.add(new Boolean(false));
list.add(Boolean.FALSE);
list.add(new Boolean(false));
list.add(Boolean.TRUE);
list.add(new Boolean(true));
list.add(Boolean.TRUE);
return list;
}
public String getCompatibilityVersion() {
return "3";
}
// tests
// ------------------------------------------------------------------------
public void testConstructors() {
allTests(false,new BooleanComparator());
allTests(false,new BooleanComparator(false));
allTests(true,new BooleanComparator(true));
}
public void testStaticFactoryMethods() {
allTests(false,BooleanComparator.getFalseFirstComparator());
allTests(false,BooleanComparator.getBooleanComparator(false));
allTests(true,BooleanComparator.getTrueFirstComparator());
allTests(true,BooleanComparator.getBooleanComparator(true));
}
public void testEqualsCompatibleInstance() {
assertEquals(new BooleanComparator(),new BooleanComparator(false));
assertEquals(new BooleanComparator(false),new BooleanComparator(false));
assertEquals(new BooleanComparator(false),BooleanComparator.getFalseFirstComparator());
assertSame(BooleanComparator.getFalseFirstComparator(),BooleanComparator.getBooleanComparator(false));
assertEquals(new BooleanComparator(true),new BooleanComparator(true));
assertEquals(new BooleanComparator(true),BooleanComparator.getTrueFirstComparator());
assertSame(BooleanComparator.getTrueFirstComparator(),BooleanComparator.getBooleanComparator(true));
assertTrue(!(new BooleanComparator().equals(new BooleanComparator(true))));
assertTrue(!(new BooleanComparator(true).equals(new BooleanComparator(false))));
}
// utilities
// ------------------------------------------------------------------------
protected void allTests(boolean trueFirst, BooleanComparator comp) {
orderIndependentTests(comp);
if(trueFirst) {
trueFirstTests(comp);
} else {
falseFirstTests(comp);
}
}
protected void trueFirstTests(BooleanComparator comp) {
assertNotNull(comp);
assertEquals(0,comp.compare(Boolean.TRUE,Boolean.TRUE));
assertEquals(0,comp.compare(Boolean.FALSE,Boolean.FALSE));
assertTrue(comp.compare(Boolean.FALSE,Boolean.TRUE) > 0);
assertTrue(comp.compare(Boolean.TRUE,Boolean.FALSE) < 0);
assertEquals(0,comp.compare((Object)(Boolean.TRUE),(Object)(Boolean.TRUE)));
assertEquals(0,comp.compare((Object)(Boolean.FALSE),(Object)(Boolean.FALSE)));
assertTrue(comp.compare((Object)(Boolean.FALSE),(Object)(Boolean.TRUE)) > 0);
assertTrue(comp.compare((Object)(Boolean.TRUE),(Object)(Boolean.FALSE)) < 0);
}
protected void falseFirstTests(BooleanComparator comp) {
assertNotNull(comp);
assertEquals(0,comp.compare(Boolean.TRUE,Boolean.TRUE));
assertEquals(0,comp.compare(Boolean.FALSE,Boolean.FALSE));
assertTrue(comp.compare(Boolean.FALSE,Boolean.TRUE) < 0);
assertTrue(comp.compare(Boolean.TRUE,Boolean.FALSE) > 0);
assertEquals(0,comp.compare((Object)(Boolean.TRUE),(Object)(Boolean.TRUE)));
assertEquals(0,comp.compare((Object)(Boolean.FALSE),(Object)(Boolean.FALSE)));
assertTrue(comp.compare((Object)(Boolean.FALSE),(Object)(Boolean.TRUE)) < 0);
assertTrue(comp.compare((Object)(Boolean.TRUE),(Object)(Boolean.FALSE)) > 0);
}
protected void orderIndependentTests(BooleanComparator comp) {
nullArgumentTests(comp);
nonBooleanArgumentTests(comp);
nullAndNonBooleanArgumentsTests(comp);
}
protected void nullArgumentTests(BooleanComparator comp) {
assertNotNull(comp);
try {
comp.compare(null,null);
fail("Expected NullPointerException");
} catch(NullPointerException e) {
// expected
}
try {
comp.compare(Boolean.TRUE,null);
fail("Expected NullPointerException");
} catch(NullPointerException e) {
// expected
}
try {
comp.compare(Boolean.FALSE,null);
fail("Expected NullPointerException");
} catch(NullPointerException e) {
// expected
}
try {
comp.compare(null,Boolean.TRUE);
fail("Expected NullPointerException");
} catch(NullPointerException e) {
// expected
}
try {
comp.compare(null,Boolean.FALSE);
fail("Expected NullPointerException");
} catch(NullPointerException e) {
// expected
}
}
protected void nonBooleanArgumentTests(BooleanComparator comp) {
assertNotNull(comp);
try {
comp.compare("string","string");
fail("Expected ClassCastException");
} catch(ClassCastException e) {
// expected
}
try {
comp.compare(Boolean.TRUE,"string");
fail("Expected ClassCastException");
} catch(ClassCastException e) {
// expected
}
try {
comp.compare("string",Boolean.TRUE);
fail("Expected ClassCastException");
} catch(ClassCastException e) {
// expected
}
try {
comp.compare("string",new Integer(3));
fail("Expected ClassCastException");
} catch(ClassCastException e) {
// expected
}
try {
comp.compare(new Integer(3),"string");
fail("Expected ClassCastException");
} catch(ClassCastException e) {
// expected
}
}
protected void nullAndNonBooleanArgumentsTests(BooleanComparator comp) {
assertNotNull(comp);
try {
comp.compare(null,"string");
fail("Expected ClassCast or NullPointer Exception");
} catch(ClassCastException e) {
// expected
} catch(NullPointerException e) {
// expected
}
try {
comp.compare("string",null);
fail("Expected ClassCast or NullPointer Exception");
} catch(ClassCastException e) {
// expected
} catch(NullPointerException e) {
// expected
}
}
}