public void TestSTIsPolygonCCW()
{
const string Wkt = "POLYGON((0 0 1,5 0 1,0 5 1,0 0 1),(1 1 1,1 3 1,3 1 1,1 1 1))";
using (var db = new PostGisTestDataConnection(TestDatabaseConnectionString))
{
db.TestGeometries
.Value(g => g.Id, 1)
.Value(g => g.Geometry, () => GeometryInput.STGeomFromText(Wkt))
.Insert();
var result1 = db.TestGeometries
.Where(g => g.Id == 1)
.Select(g => g.Geometry.STIsPolygonCCW())
.Single();
Assert.IsTrue(result1.HasValue);
Assert.IsTrue(result1);
var result2 = db.TestGeometries
.Where(g => g.Id == 1)
.Select(g => GeometryAccessors.STIsPolygonCCW(g.Geometry.STAsText()))
.Single();
Assert.IsTrue(result2.HasValue);
Assert.IsTrue(result2);
Assert.IsNull(db.Select(() => GeometryAccessors.STIsPolygonCCW((NTSG)null)));
}
}