text: import unittest
  import arff
  import StringIO
  
  OBJ = {
      'description': 'XOR Dataset',
      'relation': 'XOR',
      'attributes': [
          ('input1', 'REAL'),
          ('input2', 'REAL'),
          ('y', 'REAL'),
      ],
      'data': [
          [0.0, 0.0, 0.0],
          [0.0, 1.0, 1.0],
          [1.0, 0.0, 1.0],
          [1.0, 1.0, 0.0]
      ]
  }
  
  ARFF = '''% XOR Dataset
  @RELATION XOR
  
  @ATTRIBUTE input1 REAL
  @ATTRIBUTE input2 REAL
  @ATTRIBUTE y REAL
  
  @DATA
  0.0,0.0,0.0
  0.0,1.0,1.0
  1.0,0.0,1.0
  1.0,1.0,0.0
  % 
  % 
  % '''
  
  class TestDumps(unittest.TestCase):
      def get_dumps(self):
          dumps = arff.dumps
          return dumps
  
      def test_simple(self):
          dumps = self.get_dumps()
          s = dumps(OBJ)
  
          self.assertEqual(s, ARFF)
  
  