source: class SchemaTest {
  
    @Test
    public void testParseSchema() throws DDFException {
  
target:     String columns = "row Int, \n\tprice double, \n\t lotsize int, \n\t bedrooms int,\n\tbathrms int";
      Schema schema = new Schema(null, columns);
      for(Schema.Column column: schema.getColumns()) {
        assert(column.getName() != null);
        assert(column.getType().toString() != null);
      }
    }
  
  }