public void TestNearestNeighbour()
{
Parallel.ForEach(polygons, polygon =>
{
var distanceMetric = new Func <IndexEntry <int>, double>(entry => entry.Geom.Envelope.Distance(polygon.Geom.Envelope));
var result = relations.STNearestNeighbour(polygon.Geom.Envelope, distanceMetric, exclude: polygon.HarbourId);
Assert.IsNotNull(result);
Assert.IsTrue(result.Value != polygon.HarbourId);
});
}
