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Add testing for null parameters passed to filter, transform and countMatches 

git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/collections/trunk@130962 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Stephen Colebourne 2003-01-25 11:31:12 +00:00
parent ea11630b2d
commit 075ed28c88
1 changed files with 47 additions and 29 deletions
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76
src/test/org/apache/commons/collections/TestCollectionUtils.java
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@ -1,7 +1,7 @@
/*
* $Id: TestCollectionUtils.java,v 1.10 2002/12/08 15:29:26 scolebourne Exp $
* $Revision: 1.10 $
* $Date: 2002/12/08 15:29:26 $
* $Id: TestCollectionUtils.java,v 1.11 2003/01/25 11:31:12 scolebourne Exp $
* $Revision: 1.11 $
* $Date: 2003/01/25 11:31:12 $
*
* ====================================================================
*
@ -66,7 +66,7 @@ import java.util.*;
/**
* @author Rodney Waldhoff
* @version $Revision: 1.10 $ $Date: 2002/12/08 15:29:26 $
* @version $Revision: 1.11 $ $Date: 2003/01/25 11:31:12 $
*/
public class TestCollectionUtils extends TestCase {
public TestCollectionUtils(String testName) {
@ -416,19 +416,33 @@ public class TestCollectionUtils extends TestCase {
}
private static Predicate EQUALS_TWO = new Predicate() {
public boolean evaluate(Object input) {
return (input.equals("Two"));
}
};
public void testFilter() {
List list = new ArrayList();
list.add("One");
list.add("Two");
list.add("Three");
list.add("Four");
CollectionUtils.filter(list, new Predicate() {
public boolean evaluate(Object input) {
return (input.equals("Two"));
}
});
CollectionUtils.filter(list, EQUALS_TWO);
assertEquals(1, list.size());
assertEquals("Two", list.get(0));
list = new ArrayList();
list.add("One");
list.add("Two");
list.add("Three");
list.add("Four");
CollectionUtils.filter(list, null);
assertEquals(4, list.size());
CollectionUtils.filter(null, EQUALS_TWO);
assertEquals(4, list.size());
CollectionUtils.filter(null, null);
assertEquals(4, list.size());
}
public void testCountMatches() {
@ -437,13 +451,12 @@ public class TestCollectionUtils extends TestCase {
list.add("Two");
list.add("Three");
list.add("Four");
int count = CollectionUtils.countMatches(list, new Predicate() {
public boolean evaluate(Object input) {
return (input.equals("Two"));
}
});
int count = CollectionUtils.countMatches(list, EQUALS_TWO);
assertEquals(4, list.size());
assertEquals(1, count);
assertEquals(0, CollectionUtils.countMatches(list, null));
assertEquals(0, CollectionUtils.countMatches(null, EQUALS_TWO));
assertEquals(0, CollectionUtils.countMatches(null, null));
}
public void testSelect() {
@ -452,11 +465,7 @@ public class TestCollectionUtils extends TestCase {
list.add("Two");
list.add("Three");
list.add("Four");
Collection output = CollectionUtils.select(list, new Predicate() {
public boolean evaluate(Object input) {
return (input.equals("Two"));
}
});
Collection output = CollectionUtils.select(list, EQUALS_TWO);
assertEquals(4, list.size());
assertEquals(1, output.size());
assertEquals("Two", output.iterator().next());
@ -468,11 +477,7 @@ public class TestCollectionUtils extends TestCase {
list.add("Two");
list.add("Three");
list.add("Four");
Collection output = CollectionUtils.selectRejected(list, new Predicate() {
public boolean evaluate(Object input) {
return (input.equals("Two"));
}
});
Collection output = CollectionUtils.selectRejected(list, EQUALS_TWO);
assertEquals(4, list.size());
assertEquals(3, output.size());
assertTrue(output.contains("One"));
@ -480,20 +485,33 @@ public class TestCollectionUtils extends TestCase {
assertTrue(output.contains("Four"));
}
Transformer TRANSFORM_TO_INTEGER = new Transformer() {
public Object transform(Object input) {
return new Integer((String) input);
}
};
public void testTransform1() {
List list = new ArrayList();
list.add("1");
list.add("2");
list.add("3");
CollectionUtils.transform(list, new Transformer() {
public Object transform(Object input) {
return new Integer((String) input);
}
});
CollectionUtils.transform(list, TRANSFORM_TO_INTEGER);
assertEquals(3, list.size());
assertEquals(new Integer(1), list.get(0));
assertEquals(new Integer(2), list.get(1));
assertEquals(new Integer(3), list.get(2));
list = new ArrayList();
list.add("1");
list.add("2");
list.add("3");
CollectionUtils.transform(null, TRANSFORM_TO_INTEGER);
assertEquals(3, list.size());
CollectionUtils.transform(list, null);
assertEquals(3, list.size());
CollectionUtils.transform(null, null);
assertEquals(3, list.size());
}
public void testTransform2() {