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"""Tests for the revealhelp preprocessor"""
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# Copyright (c) IPython Development Team.
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# Distributed under the terms of the Modified BSD License.
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from IPython.nbformat import v4 as nbformat
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from .base import PreprocessorTestsBase
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from ..revealhelp import RevealHelpPreprocessor
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class Testrevealhelp(PreprocessorTestsBase):
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"""Contains test functions for revealhelp.py"""
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def build_notebook(self):
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"""Build a reveal slides notebook in memory for use with tests.
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Overrides base in PreprocessorTestsBase"""
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outputs = [nbformat.new_output(output_type="stream", name="stdout", text="a")]
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slide_metadata = {'slideshow' : {'slide_type': 'slide'}}
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subslide_metadata = {'slideshow' : {'slide_type': 'subslide'}}
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cells=[nbformat.new_code_cell(source="", execution_count=1, outputs=outputs),
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nbformat.new_markdown_cell(source="", metadata=slide_metadata),
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nbformat.new_code_cell(source="", execution_count=2, outputs=outputs),
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nbformat.new_markdown_cell(source="", metadata=slide_metadata),
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nbformat.new_markdown_cell(source="", metadata=subslide_metadata)]
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return nbformat.new_notebook(cells=cells)
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def build_preprocessor(self):
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"""Make an instance of a preprocessor"""
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preprocessor = RevealHelpPreprocessor()
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preprocessor.enabled = True
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return preprocessor
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def test_constructor(self):
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"""Can a RevealHelpPreprocessor be constructed?"""
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self.build_preprocessor()
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def test_reveal_attribute(self):
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"""Make sure the reveal url_prefix resources is set"""
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nb = self.build_notebook()
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res = self.build_resources()
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preprocessor = self.build_preprocessor()
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nb, res = preprocessor(nb, res)
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assert 'reveal' in res
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assert 'url_prefix' in res['reveal']
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def test_reveal_output(self):
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"""Make sure that the reveal preprocessor """
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nb = self.build_notebook()
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res = self.build_resources()
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preprocessor = self.build_preprocessor()
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nb, res = preprocessor(nb, res)
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cells = nb.cells
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# Make sure correct metadata tags are available on every cell.
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for cell in cells:
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assert 'slide_type' in cell.metadata
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# Make sure slide end is only applied to the cells preceeding slide
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# cells.
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assert 'slide_helper' in cells[1].metadata
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self.assertEqual(cells[1].metadata['slide_helper'], '-')
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# Verify 'slide-end'
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assert 'slide_helper' in cells[0].metadata
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self.assertEqual(cells[0].metadata['slide_helper'], 'slide_end')
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assert 'slide_helper' in cells[2].metadata
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self.assertEqual(cells[2].metadata['slide_helper'], 'slide_end')
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assert 'slide_helper' in cells[3].metadata
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self.assertEqual(cells[3].metadata['slide_helper'], 'subslide_end')
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