Add OverlayNGRobust unit test

locationtech · Dec 20, 2024 · 7665d6f · 7665d6f
1 parent 9ac6c2d
commit 7665d6f
Showing 1 changed file with 19 additions and 0 deletions.
diff --git a/modules/core/src/test/java/org/locationtech/jts/operation/overlayng/OverlayNGRobustTest.java b/modules/core/src/test/java/org/locationtech/jts/operation/overlayng/OverlayNGRobustTest.java
@@ -14,6 +14,7 @@
 import java.util.List;
 
 import org.locationtech.jts.geom.Geometry;
+import org.locationtech.jts.geom.PrecisionModel;
 import org.locationtech.jts.noding.SegmentNode;
 
 import junit.textui.TestRunner;
@@ -62,6 +63,23 @@ public void testSegmentNodeOrderingIntersection() {
     checkOverlaySuccess(a, b, OverlayNG.INTERSECTION);
   }
 
+  /**
+   * See https://github.com/locationtech/jts/issues/288
+   */
+  public void testUnionFixed() {
+    final String wkt1 =
+        "POLYGON ((-25 700, -25 327.5217935613, -24.9999982443 71.51813717395, 2000 70, -25 700))";
+    final String wkt2 =
+        "POLYGON ((-24.9999998349 674.30377216845, -25 674.30377216845, -24.99999893265 171.8884408023, -24.99999871375 139.9692190221, -25 139.9692190221, -25 20, 900 800, -25 700, -24.9999998349 674.30377216845))";
+
+    final Geometry geom1 = read(wkt1);
+    final Geometry geom2 = read(wkt2);
+
+    PrecisionModel pm = new PrecisionModel(2E10);
+    //-- no TopologyException thrown with fixed precision
+    OverlayNG.overlay(geom1, geom2, OverlayNG.UNION, pm);
+  }
+
   // MD 2020-09-14 There is no known test case that requires Snap-Rounding to succeed.
 
   public static void checkUnionSuccess(Geometry a, Geometry b) {
@@ -126,4 +144,5 @@ private void checkUnaryUnion(String[] wkt,String wktExpected) {
     }
     checkEqual(expected, result);
   }
+
 }