code: def test_to_iterable(self):
      with open(JSON_FILE) as fp:
          d = formats.JSON(fp)
      data = d.to_iterable()
      first = data[0]
      text, label = first[0], first[1]
      assert_true(isinstance(text, unicode))
  
imports: import os
  import unittest
  from nose.tools import *
  from textblob import formats
  from textblob.compat import unicode
label_desc: Use image node_id 3 for calling the TestJSON obj's underlying member method code with example usage: obj.test_to_iterable() without return types