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Add test for Null placeholder singleton 

git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/lang/trunk@137045 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Stephen Colebourne 2002-09-18 20:12:15 +00:00
parent 727c9b0fa4
commit 00df256006
1 changed files with 8 additions and 1 deletions
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9
src/test/org/apache/commons/lang/ObjectUtilsTest.java
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@ -64,7 +64,7 @@ import junit.textui.TestRunner;
* @author <a href="mailto:jmcnally@collab.net">John McNally</a> * @author <a href="mailto:jmcnally@collab.net">John McNally</a>
* @author <a href="mailto:scolebourne@joda.org">Stephen Colebourne</a> * @author <a href="mailto:scolebourne@joda.org">Stephen Colebourne</a>
* @author <a href="mailto:ridesmet@users.sourceforge.net">Ringo De Smet</a> * @author <a href="mailto:ridesmet@users.sourceforge.net">Ringo De Smet</a>
* @version $Id: ObjectUtilsTest.java,v 1.2 2002/09/18 19:49:47 scolebourne Exp $ * @version $Id: ObjectUtilsTest.java,v 1.3 2002/09/18 20:12:15 scolebourne Exp $
*/ */
public class ObjectUtilsTest extends TestCase { public class ObjectUtilsTest extends TestCase {
private static final String FOO = "foo"; private static final String FOO = "foo";
@ -119,4 +119,11 @@ public class ObjectUtilsTest extends TestCase {
ObjectUtils.identityToString(i)); ObjectUtils.identityToString(i));
assertEquals(null, ObjectUtils.identityToString(null)); assertEquals(null, ObjectUtils.identityToString(null));
} }
public void testNull() {
assertTrue(ObjectUtils.NULL != null);
assertTrue(ObjectUtils.NULL instanceof ObjectUtils.Null);
assertSame(ObjectUtils.NULL, SerializationUtils.clone(ObjectUtils.NULL));
}
} }