upstream/ipython Files · IPython/nbconvert/writers/tests/test_debug.py

Remove EventManager reset methods, because they violate encapsulation....

Remove EventManager reset methods, because they violate encapsulation. The whole idea of the EventManager is that you can register hooks without worrying about what hooks other pieces of code might be registering. The reset methods violate this separation of concerns, since they will blow away everyone else's hooks too. (See gh-6680 for an example of this breaking things.) Since there is never any safe way to use them, we simply remove them entirely.

Thomas Kluyver - - Load All Authors

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             test_debug.py
        
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      """

      Module with tests for debug

      """

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

      # Copyright (c) 2013, 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

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

      import sys

      from ...tests.base import TestsBase

      from ..debug import DebugWriter

      from IPython.utils.py3compat import PY3

      if PY3:

          from io import StringIO

      else:

          from StringIO import StringIO

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

      # Class

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

      class TestDebug(TestsBase):

          """Contains test functions for debug.py"""

          def test_output(self):

              """Test debug writer output."""

              # Capture the stdout.  Remember original.

              stdout = sys.stdout

              stream = StringIO()

              sys.stdout = stream

              # Create stdout writer, get output

              writer = DebugWriter()

              writer.write('aaa', {'outputs': {'bbb': 'ccc'}})

              output = stream.getvalue()

              # Check output.  Make sure resources dictionary is dumped, but nothing

              # else.

              assert 'aaa' not in output

              assert 'bbb' in output

              assert 'ccc' in output

              # Revert stdout

              sys.stdout = stdout

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				"""
				Module with tests for debug
				"""

				#-----------------------------------------------------------------------------
				# Copyright (c) 2013, 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
				#-----------------------------------------------------------------------------

				import sys

				from ...tests.base import TestsBase
				from ..debug import DebugWriter
				from IPython.utils.py3compat import PY3

				if PY3:
				from io import StringIO
				else:
				from StringIO import StringIO


				#-----------------------------------------------------------------------------
				# Class
				#-----------------------------------------------------------------------------

				class TestDebug(TestsBase):
				"""Contains test functions for debug.py"""

				def test_output(self):
				"""Test debug writer output."""

				# Capture the stdout. Remember original.
				stdout = sys.stdout
				stream = StringIO()
				sys.stdout = stream

				# Create stdout writer, get output
				writer = DebugWriter()
				writer.write('aaa', {'outputs': {'bbb': 'ccc'}})
				output = stream.getvalue()

				# Check output. Make sure resources dictionary is dumped, but nothing
				# else.
				assert 'aaa' not in output
				assert 'bbb' in output
				assert 'ccc' in output

				# Revert stdout
				sys.stdout = stdout