Index: applications/editors/josm/plugins/wikipedia/test/unit/org/wikipedia/WikipediaAppTest.java
===================================================================
--- applications/editors/josm/plugins/wikipedia/test/unit/org/wikipedia/WikipediaAppTest.java	(revision 32626)
+++ applications/editors/josm/plugins/wikipedia/test/unit/org/wikipedia/WikipediaAppTest.java	(revision 32670)
@@ -6,4 +6,5 @@
 import org.openstreetmap.josm.data.coor.LatLon;
 import org.openstreetmap.josm.tools.Predicate;
+import org.openstreetmap.josm.tools.Predicates;
 import org.openstreetmap.josm.tools.Utils;
 import org.wikipedia.WikipediaApp.WikipediaEntry;
@@ -214,3 +215,9 @@
         assertThat(entry3.getWiwosmStatus(), is(false));
     }
+
+    @Test
+    public void testCategoriesForPrefix() throws Exception {
+        final List<String> categories = WikipediaApp.getCategoriesForPrefix("de", "Gemeinde in Öster");
+        assertTrue(Utils.exists(categories, Predicates.equalTo("Gemeinde in Österreich")));
+    }
 }