diff --git a/src/java/com/samskivert/depot/tests/TransformersTest.java b/src/java/com/samskivert/depot/tests/TransformersTest.java
index 25bab20..b6a500b 100644
--- a/src/java/com/samskivert/depot/tests/TransformersTest.java
+++ b/src/java/com/samskivert/depot/tests/TransformersTest.java
@@ -20,9 +20,13 @@
 
 package com.samskivert.depot.tests;
 
+import java.util.Set;
+
 import org.junit.Test;
 import static org.junit.Assert.*;
 
+import com.google.common.collect.Sets;
+
 import com.samskivert.depot.Transformers;
 
 /**
@@ -36,4 +40,14 @@ public class TransformersTest
         Transformers.TabSeparatedString xform = new Transformers.TabSeparatedString();
         assertArrayEquals(data, xform.fromPersistent(null, xform.toPersistent(data)));
     }
+
+    @Test public void testEmpties ()
+    {
+        Transformers.TabSeparatedString xform = new Transformers.TabSeparatedString();
+        Set<String> set = Sets.newHashSet();
+//        set.add(xform.toPersistent(null));
+        set.add(xform.toPersistent(new String[] {}));
+        set.add(xform.toPersistent(new String[] {""}));
+        assertTrue(set.size() == 3);
+    }
 }