Merge pull request #130 from willtemperley/master

test case for polyline buffer which throws npe

Author: stolstov

src/main/java/com/esri/core/geometry/Bufferer.java

@@ -805,7 +805,7 @@ private Geometry bufferPoint_() {
 
 	private Geometry bufferPoint_(Point point) {
 		assert (m_distance > 0);
-		Polygon resultPolygon = new Polygon(m_geometry.getDescription());
+		Polygon resultPolygon = new Polygon(point.getDescription());
 		addCircle_((MultiPathImpl) resultPolygon._getImpl(), point);
 		return setStrongSimple_(resultPolygon);
 	}

src/test/java/com/esri/core/geometry/TestBuffer.java

@@ -266,6 +266,17 @@ public void testBufferPolyline() {
 			assertTrue(Math.abs(pointCount - 208.0) < 10);
 			assertTrue(simplify.isSimpleAsFeature(result, sr, null));
 		}
+
+		{
+			inputGeom = new Polyline();
+			inputGeom.startPath(1.762614,0.607368);
+			inputGeom.lineTo(1.762414,0.606655);
+			inputGeom.lineTo(1.763006,0.607034);
+			inputGeom.lineTo(1.762548,0.607135);
+
+			Geometry result = buffer.execute(inputGeom, sr, 0.005, null);
+			assertTrue(simplify.isSimpleAsFeature(result, sr, null));
+		}
 	}
 
 	@Test