Index: applications/editors/josm/plugins/ElevationProfile/test/unit/org/openstreetmap/josm/plugins/elevation/tests/EleVertexTest.java
===================================================================
--- applications/editors/josm/plugins/ElevationProfile/test/unit/org/openstreetmap/josm/plugins/elevation/tests/EleVertexTest.java	(revision 30550)
+++ applications/editors/josm/plugins/ElevationProfile/test/unit/org/openstreetmap/josm/plugins/elevation/tests/EleVertexTest.java	(revision 30550)
@@ -0,0 +1,116 @@
+// License: GPL. For details, see LICENSE file.
+package org.openstreetmap.josm.plugins.elevation.tests;
+
+import java.awt.Color;
+import java.util.List;
+
+import junit.framework.TestCase;
+
+import org.openstreetmap.josm.Main;
+import org.openstreetmap.josm.data.Preferences;
+import org.openstreetmap.josm.data.coor.LatLon;
+import org.openstreetmap.josm.plugins.elevation.ColorMap;
+import org.openstreetmap.josm.plugins.elevation.grid.EleCoordinate;
+import org.openstreetmap.josm.plugins.elevation.grid.EleVertex;
+
+public class EleVertexTest extends TestCase {
+
+    /**
+     * Setup test.
+     */
+    @Override
+    public void setUp() {
+        Main.pref = new Preferences();
+    }
+
+    public void testDivide() {
+        EleCoordinate p1 = new EleCoordinate(30.0, 30.0, 100.0);
+        EleCoordinate p2 = new EleCoordinate(35.0, 30.0, 120.0);
+        EleCoordinate p3 = new EleCoordinate(35.0, 40.0, 110.0);
+        EleVertex ev = new EleVertex(p1, p2, p3);
+
+        List<EleVertex> list = ev.divide();
+
+        assertEquals(2, list.size());
+
+        // 1st vertex (p1, p2, pN  105m)
+        EleVertex v1 = list.get(0);
+        assertEquals(325 / 3D, v1.getEle());
+        assertCoorEq(v1, 30D, 30D, 0);
+        assertCoorEq(v1, 30D, 35D, 1);
+        assertCoorEq(v1, 35D, 32.5D, 2);
+
+        // 2nd vertex (p3, p2, pN = 105m)
+        EleVertex v2 = list.get(1);
+
+        assertEquals(335/3D, v2.getEle());
+        assertCoorEq(v2, 40D, 35D, 0);
+        assertCoorEq(v2, 30D, 35D, 1);
+        assertCoorEq(v2, 35D, 32.5D, 2);
+    }
+
+    public void testSimpleRecurse() {
+        EleCoordinate c1 = new EleCoordinate(new LatLon(50.8328, 8.1337), 300);
+        EleCoordinate c2 = new EleCoordinate(new LatLon(50.8328, 7.9217), 200);
+        EleCoordinate c3 = new EleCoordinate(new LatLon(50.9558, 7.9217), 400);
+        /*EleCoordinate c4 =*/ new EleCoordinate(new LatLon(50.5767627, 9.1938483), 100);
+
+        EleVertex v1 = new EleVertex(c1, c2, c3);
+        System.out.println("Start recurse");
+        recurse(v1, 0);
+    }
+
+    private void recurse(EleVertex v, int depth) {
+        if (!v.isFinished() && depth <100) {
+            System.out.println("\tDivide: " + v);
+            List<EleVertex> list = v.divide();
+            assertNotNull(list);
+            assertEquals(2, list.size());
+            assertTrue(depth < 50); //, "Too many recursions?");
+            for (EleVertex eleVertex : list) {
+                //System.out.println("\t\tRecurse: " + eleVertex);
+                assertTrue("Area is larger " + v.getArea() + " > " + eleVertex.getArea(), eleVertex.getArea() < v.getArea());
+                recurse(eleVertex, depth + 1);
+            }
+        } else {
+            System.out.println("Finished: " + depth);
+        }
+    }
+    /*
+    public void testRenderer() {
+
+    // Staufenberg, Hessen
+    // Ulrichstein, Hessen
+    GridRenderer er = new GridRenderer("Ele", new Bounds(
+        new LatLon(50.6607106, 8.7337029),
+        new LatLon(50.5767627, 9.1938483)), null);
+
+    er.run();
+    }*/
+
+    public void testColorMap() {
+        ColorMap testMap  = ColorMap.create("Test", new Color[]{Color.white, Color.black}, new int[]{0, 1000});
+
+        // range test
+        Color c1 = testMap.getColor(-100);
+        assertEquals(Color.white, c1);
+        // range test
+        Color c2 = testMap.getColor(1100);
+        assertEquals(Color.black, c2);
+        // test mid (RGB 128, 128, 128)
+        Color c3 = testMap.getColor(500);
+        assertEquals(Color.gray, c3);
+
+        // test 0.75 (RGB 192 x 3)
+        Color c4 = testMap.getColor(751);
+        assertEquals(Color.lightGray, c4);
+        // test 0.25 (RGB 64 x 3)
+        Color c5 = testMap.getColor(251);
+        assertEquals(Color.darkGray, c5);
+    }
+
+    private void assertCoorEq(EleVertex v1, double x, double y, int n) {
+        assertEquals(x, v1.get(n).getX());
+        assertEquals(y, v1.get(n).getY());
+    }
+}
Index: applications/editors/josm/plugins/ElevationProfile/test/unit/org/openstreetmap/josm/plugins/elevation/tests/HgtReaderTest.java
===================================================================
--- applications/editors/josm/plugins/ElevationProfile/test/unit/org/openstreetmap/josm/plugins/elevation/tests/HgtReaderTest.java	(revision 30550)
+++ applications/editors/josm/plugins/ElevationProfile/test/unit/org/openstreetmap/josm/plugins/elevation/tests/HgtReaderTest.java	(revision 30550)
@@ -0,0 +1,44 @@
+// License: GPL. For details, see LICENSE file.
+package org.openstreetmap.josm.plugins.elevation.tests;
+
+import junit.framework.TestCase;
+
+import org.openstreetmap.josm.Main;
+import org.openstreetmap.josm.data.Preferences;
+import org.openstreetmap.josm.data.coor.LatLon;
+import org.openstreetmap.josm.plugins.elevation.HgtReader;
+
+public class HgtReaderTest extends TestCase {
+
+    /**
+     * Setup test.
+     */
+    @Override
+    public void setUp() {
+        Main.pref = new Preferences();
+    }
+
+    public void testGetElevationFromHgt() {
+        // Staufenberg, Hessen
+        testHgtData(50.6607106, 8.7337029, "N50E008.hgt", 199);
+        // Ulrichstein, Hessen
+        testHgtData(50.5767627, 9.1938483, "N50E009.hgt", 560);
+        // Fujijama
+        //testHgtData(35.360555, 138.727777, "N35E138.hgt", 3741);
+    }
+
+    private void testHgtData(final double lat, final double lon,
+            final String expTag, final int expHeight) {
+        LatLon l = new LatLon(lat, lon);
+        HgtReader hr = new HgtReader();
+        String text = hr.getHgtFileName(l);
+
+        assertEquals(expTag, text);
+
+        double d = hr.getElevationFromHgt(l);
+        System.out.println(d);
+        assertFalse("Data missing or void for coor " + l, Double.isNaN(d));
+
+        assertEquals((int)d, expHeight);
+    }
+}