upstream/ipython Files · IPython/utils/tests/test_io.py

inputhook: disable CTRL+C when a hook is active....

inputhook: disable CTRL+C when a hook is active. On systems with 'readline', it's very likely to intercept a signal during a select() call. The default SIGINT handler will schedule a KeyboardInterrupt exception to be raised as soon as possible. If ctypes is used to install a Python callback for PyOS_InputHook, this will happen as soon as the bytecode execution starts, so even if the first instruction of the callback is a `try: ... except KeyboardInterrupt` clause, it's actually too late. As ctypes doesn't allow a Python callback to raise an exception, this ends up with IPython detecting an internal error... not pretty. We must therefore ignore the SIGINT signals until we are sure the exception handler is active, in the Python callback.

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             test_io.py
        
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        Brian Granger
    
Work to address the review comments on Fernando's branch....

              r2498
            
      # encoding: utf-8

      """Tests for io.py"""

      #-----------------------------------------------------------------------------

      #  Copyright (C) 2008  The IPython Development Team

      #

      #  Distributed under the terms of the BSD License.  The full license is in

      #  the file COPYING, distributed as part of this software.

      #-----------------------------------------------------------------------------

      #-----------------------------------------------------------------------------

      # Imports

      #-----------------------------------------------------------------------------

      import sys

        MinRK
    
always use StringIO, never cStringIO...

              r4794
            
      from StringIO import StringIO

        MinRK
    
io.Term.cin/out/err replaced by io.stdin/out/err...

              r3800
            
      from subprocess import Popen, PIPE

        Brian Granger
    
Work to address the review comments on Fernando's branch....

              r2498
            
      import nose.tools as nt

      from IPython.testing import decorators as dec

      from IPython.utils.io import Tee

      #-----------------------------------------------------------------------------

      # Tests

      #-----------------------------------------------------------------------------

      def test_tee_simple():

          "Very simple check with stdout only"

          chan = StringIO()

          text = 'Hello'

          tee = Tee(chan, channel='stdout')

          print >> chan, text,

          nt.assert_equal(chan.getvalue(), text)

      class TeeTestCase(dec.ParametricTestCase):

          def tchan(self, channel, check='close'):

              trap = StringIO()

              chan = StringIO()

              text = 'Hello'

              std_ori = getattr(sys, channel)

              setattr(sys, channel, trap)

              tee = Tee(chan, channel=channel)

              print >> chan, text,

              setattr(sys, channel, std_ori)

              trap_val = trap.getvalue()

              nt.assert_equals(chan.getvalue(), text)

              if check=='close':

                  tee.close()

              else:

                  del tee

          def test(self):

              for chan in ['stdout', 'stderr']:

                  for check in ['close', 'del']:

                      yield self.tchan(chan, check)

        MinRK
    
io.Term.cin/out/err replaced by io.stdin/out/err...

              r3800
            
      def test_io_init():

          """Test that io.stdin/out/err exist at startup"""

          for name in ('stdin', 'stdout', 'stderr'):

              p = Popen([sys.executable, '-c', "from IPython.utils import io;print io.%s.__class__"%name],

                          stdout=PIPE)

              p.wait()

              classname = p.stdout.read().strip()

              nt.assert_equals(classname, 'IPython.utils.io.IOStream')

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Brian Granger Work to address the review comments on Fernando's branch....	r2498	# encoding: utf-8
		"""Tests for io.py"""

		#-----------------------------------------------------------------------------
		# Copyright (C) 2008 The IPython Development Team
		#
		# Distributed under the terms of the BSD License. The full license is in
		# the file COPYING, distributed as part of this software.
		#-----------------------------------------------------------------------------

		#-----------------------------------------------------------------------------
		# Imports
		#-----------------------------------------------------------------------------

		import sys

MinRK always use StringIO, never cStringIO...	r4794	from StringIO import StringIO
MinRK io.Term.cin/out/err replaced by io.stdin/out/err...	r3800	from subprocess import Popen, PIPE
Brian Granger Work to address the review comments on Fernando's branch....	r2498
		import nose.tools as nt

		from IPython.testing import decorators as dec
		from IPython.utils.io import Tee

		#-----------------------------------------------------------------------------
		# Tests
		#-----------------------------------------------------------------------------


		def test_tee_simple():
		"Very simple check with stdout only"
		chan = StringIO()
		text = 'Hello'
		tee = Tee(chan, channel='stdout')
		print >> chan, text,
		nt.assert_equal(chan.getvalue(), text)


		class TeeTestCase(dec.ParametricTestCase):

		def tchan(self, channel, check='close'):
		trap = StringIO()
		chan = StringIO()
		text = 'Hello'

		std_ori = getattr(sys, channel)
		setattr(sys, channel, trap)

		tee = Tee(chan, channel=channel)
		print >> chan, text,
		setattr(sys, channel, std_ori)
		trap_val = trap.getvalue()
		nt.assert_equals(chan.getvalue(), text)
		if check=='close':
		tee.close()
		else:
		del tee

		def test(self):
		for chan in ['stdout', 'stderr']:
		for check in ['close', 'del']:
		yield self.tchan(chan, check)
MinRK io.Term.cin/out/err replaced by io.stdin/out/err...	r3800
		def test_io_init():
		"""Test that io.stdin/out/err exist at startup"""
		for name in ('stdin', 'stdout', 'stderr'):
		p = Popen([sys.executable, '-c', "from IPython.utils import io;print io.%s.__class__"%name],
		stdout=PIPE)
		p.wait()
		classname = p.stdout.read().strip()
		nt.assert_equals(classname, 'IPython.utils.io.IOStream')