text: import pytest
  from marshmallow import Schema
  from onto import fields
  
  
  def test_basic_schema():
  
      class BasicSchema(Schema):
          integer_field = fields.Integer()
  
      class BasicObj:
  
          def __init__(self):
              self.integer_field = 0
  
      bs = BasicSchema()
      bo = BasicObj()
      bo.integer_field = 1
  
      d = bs.dump(bo)
      assert d == {
          "integer_field": 1
      }
  
  
  