Index: trunk/test/unit/org/openstreetmap/josm/tools/GeometryTest.java
===================================================================
--- trunk/test/unit/org/openstreetmap/josm/tools/GeometryTest.java	(revision 9951)
+++ trunk/test/unit/org/openstreetmap/josm/tools/GeometryTest.java	(revision 9952)
@@ -13,4 +13,5 @@
 import org.openstreetmap.josm.data.coor.EastNorth;
 import org.openstreetmap.josm.data.osm.DataSet;
+import org.openstreetmap.josm.data.osm.Relation;
 import org.openstreetmap.josm.data.osm.Way;
 import org.openstreetmap.josm.io.OsmReader;
@@ -72,4 +73,20 @@
             Way closedWay = (Way) Utils.filter(ds.allPrimitives(), SearchCompiler.compile("landuse=forest")).iterator().next();
             Assert.assertEquals(5760015.7353515625, Geometry.closedWayArea(closedWay), 1e-3);
+            Assert.assertEquals(5760015.7353515625, Geometry.computeArea(closedWay), 1e-3);
+        }
+    }
+
+    /**
+     * Test of {@link Geometry#multipolygonArea(Relation)}} method.
+     *
+     * @throws Exception if an error occurs
+     */
+    @Test
+    public void testMultipolygonArea() throws Exception {
+        try (FileInputStream in = new FileInputStream(TestUtils.getTestDataRoot() + "multipolygon.osm")) {
+            DataSet ds = OsmReader.parseDataSet(in, null);
+            final Relation r = ds.getRelations().iterator().next();
+            Assert.assertEquals(4401735.20703125, Geometry.multipolygonArea(r), 1e-3);
+            Assert.assertEquals(4401735.20703125, Geometry.computeArea(r), 1e-3);
         }
     }