Index: trunk/test/unit/org/openstreetmap/josm/gui/mappaint/mapcss/ChildOrParentSelectorTest.groovy
===================================================================
--- trunk/test/unit/org/openstreetmap/josm/gui/mappaint/mapcss/ChildOrParentSelectorTest.groovy	(revision 8825)
+++ trunk/test/unit/org/openstreetmap/josm/gui/mappaint/mapcss/ChildOrParentSelectorTest.groovy	(revision 8833)
@@ -2,7 +2,7 @@
 package org.openstreetmap.josm.gui.mappaint.mapcss
 
-import org.openstreetmap.josm.gui.mappaint.MultiCascade;
-
-import static org.junit.Assert.*
+import org.openstreetmap.josm.data.osm.OsmPrimitiveType
+import org.openstreetmap.josm.gui.mappaint.MultiCascade
+import org.openstreetmap.josm.io.OsmReader
 
 import java.util.logging.Logger
@@ -182,3 +182,11 @@
         assert selector.matches(e)
     }
+
+    @Test
+    public void testContains() throws Exception {
+        def ds = OsmReader.parseDataSet(new FileInputStream("data_nodist/amenity-in-amenity.osm"), null)
+        def css = parse("node[tag(\"amenity\") = parent_tag(\"amenity\")] ∈ *[amenity] {}")
+        assert css.matches(new Environment(ds.getPrimitiveById(123, OsmPrimitiveType.WAY)))
+        assert css.matches(new Environment(ds.getPrimitiveById(123, OsmPrimitiveType.RELATION)))
+    }
 }