Index: trunk/test/unit/org/openstreetmap/josm/actions/SimplifyWayActionTest.java
===================================================================
--- trunk/test/unit/org/openstreetmap/josm/actions/SimplifyWayActionTest.java	(revision 10263)
+++ trunk/test/unit/org/openstreetmap/josm/actions/SimplifyWayActionTest.java	(revision 10263)
@@ -0,0 +1,99 @@
+// License: GPL. For details, see LICENSE file.
+package org.openstreetmap.josm.actions;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.openstreetmap.josm.JOSMFixture;
+import org.openstreetmap.josm.Main;
+import org.openstreetmap.josm.data.coor.LatLon;
+import org.openstreetmap.josm.data.osm.DataSet;
+import org.openstreetmap.josm.data.osm.Node;
+import org.openstreetmap.josm.data.osm.Way;
+import org.openstreetmap.josm.gui.layer.OsmDataLayer;
+
+/**
+ * Unit tests for class {@link SimplifyWayAction}.
+ */
+public final class SimplifyWayActionTest {
+
+    /** Class under test. */
+    private static SimplifyWayAction action;
+
+    /**
+     * Setup test.
+     */
+    @BeforeClass
+    public static void setUp() {
+        JOSMFixture.createUnitTestFixture().init(true);
+        action = Main.main.menu.simplifyWay;
+        action.setEnabled(true);
+    }
+
+    private static Way createWaySelected(DataSet ds, double latStart) {
+        Node n1 = new Node(new LatLon(latStart, 1.0));
+        ds.addPrimitive(n1);
+        Node n2 = new Node(new LatLon(latStart+1.0, 1.0));
+        ds.addPrimitive(n2);
+        Way w = new Way();
+        w.addNode(n1);
+        w.addNode(n2);
+        ds.addPrimitive(w);
+        ds.addSelected(w);
+        return w;
+    }
+
+    /**
+     * Test without any selection.
+     */
+    @Test
+    public void testSelectionEmpty() {
+        DataSet ds = new DataSet();
+        OsmDataLayer layer = new OsmDataLayer(ds, "", null);
+        try {
+            Main.main.addLayer(layer);
+            assertTrue(ds.getSelected().isEmpty());
+            action.actionPerformed(null);
+        } finally {
+            Main.main.removeLayer(layer);
+        }
+    }
+
+    /**
+     * Test with a single way.
+     */
+    @Test
+    public void testSingleWay() {
+        DataSet ds = new DataSet();
+        createWaySelected(ds, 0.0);
+        OsmDataLayer layer = new OsmDataLayer(ds, "", null);
+        try {
+            Main.main.addLayer(layer);
+            assertEquals(1, ds.getSelected().size());
+            action.actionPerformed(null);
+        } finally {
+            Main.main.removeLayer(layer);
+        }
+    }
+
+    /**
+     * Test with more than 10 ways.
+     */
+    @Test
+    public void testMoreThanTenWays() {
+        DataSet ds = new DataSet();
+        for (int i = 0; i < 11; i++) {
+            createWaySelected(ds, i);
+        }
+        OsmDataLayer layer = new OsmDataLayer(ds, "", null);
+        try {
+            Main.main.addLayer(layer);
+            assertEquals(11, ds.getSelected().size());
+            action.actionPerformed(null);
+        } finally {
+            Main.main.removeLayer(layer);
+        }
+    }
+}