Index: applications/editors/josm/plugins/alignways/test/unit/org/openstreetmap/josm/plugins/alignways/geometry/AlignWaysGeomLineTest.java
===================================================================
--- applications/editors/josm/plugins/alignways/test/unit/org/openstreetmap/josm/plugins/alignways/geometry/AlignWaysGeomLineTest.java	(revision 34489)
+++ applications/editors/josm/plugins/alignways/test/unit/org/openstreetmap/josm/plugins/alignways/geometry/AlignWaysGeomLineTest.java	(revision 34489)
@@ -0,0 +1,92 @@
+// License: GPL. For details, see LICENSE file.
+package org.openstreetmap.josm.plugins.alignways.geometry;
+
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.openstreetmap.josm.plugins.alignways.geometry.AlignWaysGeomLine.IntersectionStatus;
+
+/**
+ * Tests of {@link AlignWaysGeomLine}
+ */
+public class AlignWaysGeomLineTest {
+    private AlignWaysGeomLine line_x1y1x2y2, line_par_x1y1x2y2;
+    private AlignWaysGeomLine line_abc;
+    private AlignWaysGeomLine line_mb;
+    private AlignWaysGeomLine line_line;
+    private AlignWaysGeomLine line_horiz, line_vert;
+
+    @Before
+    public void setUp() {
+        line_x1y1x2y2 = new AlignWaysGeomLine(-2.0, -1.0, 4.0, 3.0);
+        line_abc = new AlignWaysGeomLine(2.0/3, -1.0, 1.0/3);
+        line_mb = new AlignWaysGeomLine(2.0/3, 1.0/3);
+        line_line = new AlignWaysGeomLine(line_x1y1x2y2);
+        line_par_x1y1x2y2 = new AlignWaysGeomLine(-2.0, -2.0, 4.0, 2.0);
+        line_horiz = new AlignWaysGeomLine(-5.0, 3.0, 6.0, 3.0);
+        line_vert = new AlignWaysGeomLine(2.0, -3.0, 2.0, -10.5);
+    }
+
+    @Test
+    public void LineLineEquiv() {
+        assertTrue(line_x1y1x2y2.equals(line_line));
+    }
+
+    @Test
+    public void LineAbcLineEquiv() {
+        assertTrue(line_x1y1x2y2.equals(line_abc));
+    }
+
+    @Test
+    public void LineMbLineEquiv() {
+        assertTrue(line_x1y1x2y2.equals(line_mb));
+    }
+
+    @Test
+    public void LineAbcMbEquiv() {
+        assertTrue(line_abc.equals(line_mb));
+    }
+
+    @Test
+    public void LineLineParallel() {
+        line_x1y1x2y2.getIntersection(line_par_x1y1x2y2);
+        assertTrue(line_x1y1x2y2.getIntersectionStatus() == IntersectionStatus.LINES_PARALLEL);
+    }
+
+    @Test
+    public void LineAbcOverlap() {
+        line_x1y1x2y2.getIntersection(line_abc);
+        assertTrue(line_x1y1x2y2.getIntersectionStatus() == IntersectionStatus.LINES_OVERLAP);
+    }
+
+    @Test
+    public void LineMbOverlap() {
+        line_x1y1x2y2.getIntersection(line_mb);
+        assertTrue(line_x1y1x2y2.getIntersectionStatus() == IntersectionStatus.LINES_OVERLAP);
+    }
+
+    @Test
+    public void AbcMbOverlap() {
+        line_abc.getIntersection(line_mb);
+        assertTrue(line_abc.getIntersectionStatus() == IntersectionStatus.LINES_OVERLAP);
+    }
+
+    @Test
+    public void GetXOnHoriz() {
+        assertTrue(line_horiz.getXonLine(2.0).isNaN());
+    }
+
+    @Test
+    public void GetYOnVert() {
+        assertTrue(line_vert.getYonLine(2.0).isNaN());
+    }
+
+    @Test
+    public void StatusUndefAfterConstruct() throws Exception {
+        AlignWaysGeomLine newLine = new AlignWaysGeomLine(1.0, 2.0);
+        assertTrue(newLine.getIntersectionStatus() == IntersectionStatus.UNDEFINED);
+
+    }
+
+}