code: def test_detect_csv(self):
      with open(CSV_FILE) as fp:
          format = formats.detect(fp)
      assert_equal(format, formats.CSV)
  
imports: import os
  import unittest
  from nose.tools import *
  from textblob import formats
  from textblob.compat import unicode
label_desc: Use image node_id 2 for calling the TestFormats obj's underlying member method code with example usage: obj.test_detect_csv() without return types