public void TestSTNPoints()
{
using (var db = new PostGisTestDataConnection(TestDatabaseConnectionString))
{
const string Wkt1 = "POINT(77.29 29.07)";
db.TestGeometries.Value(g => g.Id, 1).Value(g => g.Geometry, () => GeometryInput.STGeomFromText(Wkt1)).Insert();
const string Wkt2 = "LINESTRING(77.29 29.07 1,77.42 29.26 0,77.27 29.31 -1,77.29 29.07 3)";
db.TestGeometries.Value(g => g.Id, 2).Value(g => g.Geometry, () => GeometryInput.STGeomFromText(Wkt2)).Insert();
const string Wkt3 = "LINESTRING EMPTY";
db.TestGeometries.Value(g => g.Id, 3).Value(g => g.Geometry, () => GeometryInput.STGeomFromText(Wkt3)).Insert();
db.TestGeometries.Value(g => g.Id, 4).Value(g => g.Geometry, () => null).Insert();
var nPoints1 = db.TestGeometries.Where(g => g.Id == 1).Select(g => g.Geometry.STNPoints()).Single();
Assert.AreEqual(1, nPoints1);
var nPoints2 = db.TestGeometries.Where(g => g.Id == 2).Select(g => g.Geometry.STNPoints()).Single();
Assert.AreEqual(4, nPoints2);
var nPoints3 = db.TestGeometries.Where(g => g.Id == 3).Select(g => g.Geometry.STNPoints()).Single();
Assert.AreEqual(0, nPoints3);
var nPoints4 = db.TestGeometries.Where(g => g.Id == 4).Select(g => g.Geometry.STNPoints()).Single();
Assert.IsNull(nPoints4);
Assert.IsNull(db.Select(() => GeometryAccessors.STNPoints((NTSG)null)));
Assert.AreEqual(1, db.Select(() => GeometryAccessors.STNPoints(Wkt1)));
Assert.AreEqual(4, db.Select(() => GeometryAccessors.STNPoints(Wkt2)));
Assert.AreEqual(0, db.Select(() => GeometryAccessors.STNPoints(Wkt3)));
}
}