[geos-commits] r4153 - trunk/tests/unit/operation/overlay

[svn_geos at osgeo.org]

Author: mloskot
Date: 2016-02-29 09:59:06 -0800 (Mon, 29 Feb 2016)
New Revision: 4153

Added:
   trunk/tests/unit/operation/overlay/OverlayOpUnionTest.cpp
Log:
Add basic test for geos::operation::OverlayOp with UNION.

Test union of four segments (linestrings) of a suqare.

Added: trunk/tests/unit/operation/overlay/OverlayOpUnionTest.cpp
===================================================================
--- trunk/tests/unit/operation/overlay/OverlayOpUnionTest.cpp	                        (rev 0)
+++ trunk/tests/unit/operation/overlay/OverlayOpUnionTest.cpp	2016-02-29 17:59:06 UTC (rev 4153)
@@ -0,0 +1,64 @@
+// 
+// Test Suite for geos::operation::OverlayOp class for UNION
+
+#include <tut.hpp>
+// geos
+#include <geos/operation/overlay/OverlayOp.h>
+#include <geos/geom/Geometry.h>
+#include <geos/geom/GeometryFactory.h>
+#include <geos/geom/PrecisionModel.h>
+#include <geos/io/WKBReader.h>
+#include <geos/io/WKTReader.h>
+// std
+#include <string>
+#include <memory>
+
+using namespace geos::geom;
+using namespace geos::operation;
+
+namespace tut
+{
+    //
+    // Test Group
+    //
+
+    struct test_overlayopunion_data
+    {
+        typedef geos::geom::Geometry::AutoPtr GeometryPtr;
+        typedef geos::geom::GeometryFactory GeometryFactory;
+        typedef geos::geom::GeometryFactory::unique_ptr GeometryFactoryPtr;
+    };
+
+    typedef test_group<test_overlayopunion_data> group;
+    typedef group::object object;
+
+    group test_issimpleop_group("geos::operation::OverlayOp::UNION");
+
+    //
+    // Test Cases
+    //
+
+    // 1 - Union four segments of a square
+    template<>
+    template<>
+    void object::test<1>()
+    {
+        // Arrange
+        geos::geom::PrecisionModel pm(1e+13);
+        GeometryFactoryPtr factory = geos::geom::GeometryFactory::create(&pm);
+        geos::io::WKTReader reader(*factory);
+        GeometryPtr line1(reader.read("LINESTRING(0 0, 0 5)"));
+        GeometryPtr line2(reader.read("LINESTRING(0 5, 5 5)"));
+        GeometryPtr line3(reader.read("LINESTRING(5 5, 5 0)"));
+        GeometryPtr line4(reader.read("LINESTRING(5 0, 0 0)"));
+
+        // Act: union segments incrementally
+        GeometryPtr lines12(line1->Union(line2.get()));
+        GeometryPtr lines123(lines12->Union(line3.get())); 
+        GeometryPtr lines1234(lines123->Union(line4.get()));
+
+        // Assert
+        ensure_equals(lines1234->getGeometryTypeId(), geos::geom::GEOS_MULTILINESTRING);
+    }
+
+} // namespace tut