add testcase for previous change

git-svn-id: https://svn.apache.org/repos/asf/ant/antlibs/antunit/trunk@448269 13f79535-47bb-0310-9956-ffa450edef68

src/etc/testcases/antunit.xml

@@ -35,6 +35,12 @@ under the License.
     <au:antunit/>
   </target>
 
+  <target name="emptyTests">
+    <au:antunit>
+      <resources />
+    </au:antunit>
+  </target>
+
   <target name="nonFile">
     <au:antunit>
       <url url="http://ant.apache.org/"/>
@@ -91,4 +97,4 @@ under the License.
     </junitreport>
     <fail if="antunit-failure">At least one test has failed</fail>
   </target>
-</project>
+</project>

src/tests/junit/org/apache/ant/antunit/AntUnitTest.java

@@ -68,6 +68,10 @@ public class AntUnitTest extends BuildFileTest {
                                      AntUnit.ERROR_NO_TESTS);
     }
 
+    public void testEmptyTests() {
+        executeTarget("emptyTests");
+    }
+
     public void testNonFile() {
         expectSpecificBuildException("nonFile",
                                      "URL has been specified",