Bug 43048: Testcase. (Failed on Ant 1.7.0 but works for me on HEAD, so no other changes).

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@563403 13f79535-47bb-0310-9956-ffa450edef68

src/tests/antunit/types/resources/files-test.xml

@@ -0,0 +1,36 @@
+<project name="files-test" default="antunit"
+         xmlns:au="antlib:org.apache.ant.antunit">
+
+  <target name="antunit">
+    <au:antunit>
+      <au:plainlistener />
+      <file file="${ant.file}" />
+    </au:antunit>
+  </target>
+  
+  <target name="setUp">
+    <property name="out" value="out"/>
+  </target>
+  
+  <target name="tearDown">
+    <delete dir="${out}"/>
+  </target>
+
+  <target name="testEmptyReference" description="Bug43048">
+    <files id="foo"/>
+    <mkdir dir="${out}"/>
+    <copy todir="${out}">
+      <!-- threw a java.lang.NullPointerException -->
+	  <files refid="foo"/>
+    </copy>
+  </target>
+
+  <target name="testEmptyFiles" description="Bug43048">
+    <mkdir dir="${out}"/>
+    <copy todir="${out}">
+      <files/>
+    </copy>
+  </target>
+
+
+</project>