text: """ Testing decorators module
  """
  
  import numpy as np
  
  from numpy.testing import (assert_almost_equal,
                             assert_array_equal)
  
  from nose.tools import (assert_true, assert_false, assert_raises,
                          assert_equal, assert_not_equal)
  
  
  from dipy.testing.decorators import doctest_skip_parser
  
  
  def test_skipper():
      def f():
          pass
      docstring = \
          """ Header
  
          >>> something # skip if not HAVE_AMODULE
          >>> something + else
          >>> a = 1 # skip if not HAVE_BMODULE
          >>> something2   # skip if HAVE_AMODULE
          """
      f.__doc__ = docstring
      global HAVE_AMODULE, HAVE_BMODULE
      HAVE_AMODULE = False
      HAVE_BMODULE = True
      f2 = doctest_skip_parser(f)
      assert_true(f is f2)
      assert_equal(f2.__doc__,
          """ Header
  
          >>> something # doctest: +SKIP
          >>> something + else
          >>> a = 1
          >>> something2
          """)
      HAVE_AMODULE = True
      HAVE_BMODULE = False
      f.__doc__ = docstring
      f2 = doctest_skip_parser(f)
      assert_true(f is f2)
      assert_equal(f2.__doc__,
          """ Header
  
          >>> something
          >>> something + else
          >>> a = 1 # doctest: +SKIP
          >>> something2   # doctest: +SKIP
          """)
      del HAVE_AMODULE
      f.__doc__ = docstring
      assert_raises(NameError, doctest_skip_parser, f)
  