public void TestSTHasArc()
{
using (var db = new PostGisTestDataConnection(TestDatabaseConnectionString))
{
db.TestGeometries
.Value(g => g.Id, 1)
.Value(g => g.Geometry, () =>
GeometryConstructors.STCollect(
GeometryInput.STGeomFromText("LINESTRING(1 2, 3 4, 5 6)"),
GeometryInput.STGeomFromText("CIRCULARSTRING(1 1, 2 3, 4 5, 6 7, 5 6)")))
.Insert();
db.TestGeometries
.Value(g => g.Id, 2)
.Value(g => g.Geometry, () => null)
.Insert();
Assert.IsTrue(db.TestGeometries
.Where(g => g.Id == 1)
.Select(g => g.Geometry.STHasArc())
.Single());
Assert.IsNull(db.TestGeometries
.Where(g => g.Id == 2)
.Select(g => g.Geometry.STHasArc())
.Single());
Assert.IsTrue(db.Select(() => GeometryAccessors.STHasArc("CIRCULARSTRING(1 1, 2 3, 4 5, 6 7, 5 6)")));
}
}