upstream/ipython Files · IPython/kernel/tests/test_launcher.py

Simplify StreamCapturer for subprocess testing...

Simplify StreamCapturer for subprocess testing Rather than using a transient pipe for each subprocess started, the StreamCapturer now makes a single pipe, and subprocesses redirect their output to it. So long as this works on Windows (I've done brief testing, and os.pipe() seems to be functional), this will hopefully make this much more robust. The recent failures in ShiningPanda on IPython.parallel have been caused by StreamCapturer.

Paul Ivanov - - Load All Authors

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             test_launcher.py
        
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      """Tests for kernel utility functions

      Authors

      -------

      * MinRK

      """

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

      # Copyright (c) 2011, the IPython Development Team.

      #

      # Distributed under the terms of the Modified BSD License.

      #

      # The full license is in the file COPYING.txt, distributed with this software.

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

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

      # Imports

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

      # Third-party imports

      import nose.tools as nt

      # Our own imports

      from IPython.kernel.launcher import swallow_argv

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

      # Classes and functions

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

      def test_swallow_argv():

          tests = [

              # expected  , argv       , aliases, flags

              (['-a', '5'], ['-a', '5'], None, None),

              (['5'], ['-a', '5'], None, ['a']),

              ([], ['-a', '5'], ['a'], None),

              ([], ['-a', '5'], ['a'], ['a']),

              ([], ['--foo'], None, ['foo']),

              ([], ['--foo'], ['foobar'], []),

              ([], ['--foo', '5'], ['foo'], []),

              ([], ['--foo=5'], ['foo'], []),

              (['--foo=5'], ['--foo=5'], [], ['foo']),

              (['5'], ['--foo', '5'], [], ['foo']),

              (['bar'], ['--foo', '5', 'bar'], ['foo'], ['foo']),

              (['bar'], ['--foo=5', 'bar'], ['foo'], ['foo']),

              (['5','bar'], ['--foo', '5', 'bar'], None, ['foo']),

              (['bar'], ['--foo', '5', 'bar'], ['foo'], None),

              (['bar'], ['--foo=5', 'bar'], ['foo'], None),

          ]

          for expected, argv, aliases, flags in tests:

              stripped = swallow_argv(argv, aliases=aliases, flags=flags)

              message = '\n'.join(['',

                  "argv: %r" % argv,

                  "aliases: %r" % aliases,

                  "flags : %r" % flags,

                  "expected : %r" % expected,

                  "returned : %r" % stripped,

              ])

              nt.assert_equal(expected, stripped, message)

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				"""Tests for kernel utility functions

				Authors
				-------
				* MinRK
				"""
				#-----------------------------------------------------------------------------
				# Copyright (c) 2011, the IPython Development Team.
				#
				# Distributed under the terms of the Modified BSD License.
				#
				# The full license is in the file COPYING.txt, distributed with this software.
				#-----------------------------------------------------------------------------

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

				# Third-party imports
				import nose.tools as nt

				# Our own imports
				from IPython.kernel.launcher import swallow_argv

				#-----------------------------------------------------------------------------
				# Classes and functions
				#-----------------------------------------------------------------------------

				def test_swallow_argv():
				tests = [
				# expected , argv , aliases, flags
				(['-a', '5'], ['-a', '5'], None, None),
				(['5'], ['-a', '5'], None, ['a']),
				([], ['-a', '5'], ['a'], None),
				([], ['-a', '5'], ['a'], ['a']),
				([], ['--foo'], None, ['foo']),
				([], ['--foo'], ['foobar'], []),
				([], ['--foo', '5'], ['foo'], []),
				([], ['--foo=5'], ['foo'], []),
				(['--foo=5'], ['--foo=5'], [], ['foo']),
				(['5'], ['--foo', '5'], [], ['foo']),
				(['bar'], ['--foo', '5', 'bar'], ['foo'], ['foo']),
				(['bar'], ['--foo=5', 'bar'], ['foo'], ['foo']),
				(['5','bar'], ['--foo', '5', 'bar'], None, ['foo']),
				(['bar'], ['--foo', '5', 'bar'], ['foo'], None),
				(['bar'], ['--foo=5', 'bar'], ['foo'], None),
				]
				for expected, argv, aliases, flags in tests:
				stripped = swallow_argv(argv, aliases=aliases, flags=flags)
				message = '\n'.join(['',
				"argv: %r" % argv,
				"aliases: %r" % aliases,
				"flags : %r" % flags,
				"expected : %r" % expected,
				"returned : %r" % stripped,
				])
				nt.assert_equal(expected, stripped, message)