def test_get_spatial_dialect(self):
spatial_dialect = DialectManager.get_spatial_dialect(PGDialect_psycopg2())
ok_(isinstance(spatial_dialect, PGSpatialDialect))
ok_(isinstance(DialectManager.get_spatial_dialect(MySQLDialect()), MySQLSpatialDialect))
ok_(isinstance(DialectManager.get_spatial_dialect(SQLiteDialect()), SQLiteSpatialDialect))
ok_(isinstance(DialectManager.get_spatial_dialect(OracleDialect()), OracleSpatialDialect))
ok_(isinstance(DialectManager.get_spatial_dialect(MSDialect()), MSSpatialDialect))
spatial_dialect2 = DialectManager.get_spatial_dialect(PGDialect_psycopg2())
ok_(spatial_dialect is spatial_dialect2, "only one instance per dialect should be created")
