<s> try : <EOL> import unittest2 as unittest <EOL> except ImportError : <EOL> import unittest <EOL> from pika import utils <EOL> class UtilsTests ( unittest . TestCase ) : <EOL> def test_is_callable_true ( self ) : <EOL> self . assertTrue ( utils . is_callable ( utils . is_callable ) ) <EOL> def test_is_callable_false ( self ) : <EOL> self . assertFalse ( utils . is_callable ( <NUM_LIT:1> ) ) </s>
