Index: trunk/test/unit/org/openstreetmap/josm/data/validation/tests/UnconnectedWaysTest.java
===================================================================
--- trunk/test/unit/org/openstreetmap/josm/data/validation/tests/UnconnectedWaysTest.java	(revision 6556)
+++ trunk/test/unit/org/openstreetmap/josm/data/validation/tests/UnconnectedWaysTest.java	(revision 6556)
@@ -0,0 +1,38 @@
+// License: GPL. For details, see LICENSE file.
+package org.openstreetmap.josm.data.validation.tests;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.openstreetmap.josm.Main;
+import org.openstreetmap.josm.data.Preferences;
+import org.openstreetmap.josm.data.osm.DataSet;
+import org.openstreetmap.josm.data.projection.Projections;
+import org.openstreetmap.josm.gui.progress.NullProgressMonitor;
+import org.openstreetmap.josm.io.OsmReader;
+
+import java.io.FileInputStream;
+
+import static org.CustomMatchers.isEmpty;
+import static org.junit.Assert.assertThat;
+
+public class UnconnectedWaysTest {
+
+    UnconnectedWays bib;
+
+    @Before
+    public void setUp() throws Exception {
+        bib = new UnconnectedWays.UnconnectedHighways();
+        Main.pref = new Preferences();
+        Main.setProjection(Projections.getProjectionByCode("EPSG:3857"));
+        bib.initialize();
+        bib.startTest(null);
+    }
+
+    @Test
+    public void testTicket6313() throws Exception {
+        final DataSet ds = OsmReader.parseDataSet(new FileInputStream("data_nodist/UnconnectedWaysTest.osm"), NullProgressMonitor.INSTANCE);
+        bib.visit(ds.allPrimitives());
+        bib.endTest();
+        assertThat(bib.getErrors(), isEmpty());
+    }
+}