upstream/ipython Files · IPython/nbconvert/preprocessors/tests/test_clearoutput.py

Fix race condition in javascript kernel message processing...

Fix race condition in javascript kernel message processing Because the binary messages are now deserialized using the asynchronous FileReader API, we need to have some way to force the messages to still be processed in the order they are received. This patch implements a simple processing queue using promises.

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             test_clearoutput.py
        
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      """

      Module with tests for the clearoutput preprocessor.

      """

      # Copyright (c) IPython Development Team.

      # Distributed under the terms of the Modified BSD License.

      from .base import PreprocessorTestsBase

      from ..clearoutput import ClearOutputPreprocessor

      class TestClearOutput(PreprocessorTestsBase):

          """Contains test functions for clearoutput.py"""

          def build_preprocessor(self):

              """Make an instance of a preprocessor"""

              preprocessor = ClearOutputPreprocessor()

              preprocessor.enabled = True

              return preprocessor

          def test_constructor(self):

              """Can a ClearOutputPreprocessor be constructed?"""

              self.build_preprocessor()

          def test_output(self):

              """Test the output of the ClearOutputPreprocessor"""

              nb = self.build_notebook()

              res = self.build_resources()

              preprocessor = self.build_preprocessor()

              nb, res = preprocessor(nb, res)

              assert nb.cells[0].outputs == []

              assert nb.cells[0].execution_count is None

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				"""
				Module with tests for the clearoutput preprocessor.
				"""

				# Copyright (c) IPython Development Team.
				# Distributed under the terms of the Modified BSD License.

				from .base import PreprocessorTestsBase
				from ..clearoutput import ClearOutputPreprocessor


				class TestClearOutput(PreprocessorTestsBase):
				"""Contains test functions for clearoutput.py"""


				def build_preprocessor(self):
				"""Make an instance of a preprocessor"""
				preprocessor = ClearOutputPreprocessor()
				preprocessor.enabled = True
				return preprocessor

				def test_constructor(self):
				"""Can a ClearOutputPreprocessor be constructed?"""
				self.build_preprocessor()

				def test_output(self):
				"""Test the output of the ClearOutputPreprocessor"""
				nb = self.build_notebook()
				res = self.build_resources()
				preprocessor = self.build_preprocessor()
				nb, res = preprocessor(nb, res)
				assert nb.cells[0].outputs == []
				assert nb.cells[0].execution_count is None