public void TestSTNumGeometries()
{
using (var db = new PostGisTestDataConnection(TestDatabaseConnectionString))
{
const string Wkt1 = "LINESTRING(77.29 29.07,77.42 29.26,77.27 29.31,77.29 29.07)";
db.TestGeometries.Value(g => g.Id, 1).Value(g => g.Geometry, () => GeometryInput.STGeomFromText(Wkt1)).Insert();
const string Wkt2 = "GEOMETRYCOLLECTION(MULTIPOINT(-2 3 , -2 2), LINESTRING(5 5, 10 10), POLYGON((-7 4.2, -7.1 5, -7.1 4.3, -7 4.2)))";
db.TestGeometries.Value(g => g.Id, 2).Value(g => g.Geometry, () => GeometryInput.STGeomFromText(Wkt2)).Insert();
const string Wkt3 = "POINT 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();
Assert.AreEqual(
1,
db.TestGeometries
.Where(g => g.Id == 1)
.Select(g => g.Geometry.STNumGeometries())
.Single());
Assert.AreEqual(
3,
db.TestGeometries
.Where(g => g.Id == 2)
.Select(g => g.Geometry.STNumGeometries())
.Single());
Assert.AreEqual(
0,
db.TestGeometries
.Where(g => g.Id == 3)
.Select(g => g.Geometry.STNumGeometries())
.Single());
Assert.IsNull(db.TestGeometries
.Where(g => g.Id == 4)
.Select(g => g.Geometry.STNumGeometries())
.Single());
Assert.AreEqual(
3,
db.Select(() => GeometryAccessors.STNumGeometries(Wkt2)));
}
}