72 lines
2.4 KiB
Python
72 lines
2.4 KiB
Python
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"""
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Module with tests for the RegexRemovePreprocessor.
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"""
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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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import re
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from nbformat import v4 as nbformat, from_dict
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from .base import PreprocessorTestsBase
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from ..regexremove import RegexRemovePreprocessor
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class TestRegexRemove(PreprocessorTestsBase):
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"""Contains test functions for regexremove.py"""
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def build_notebook(self):
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notebook = super().build_notebook()
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# Add a few empty cells
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notebook.cells.extend([
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nbformat.new_code_cell(''),
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nbformat.new_markdown_cell(' '),
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nbformat.new_raw_cell('\n'),
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nbformat.new_raw_cell('\t'),
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])
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return notebook
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def build_preprocessor(self):
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"""Make an instance of a preprocessor"""
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preprocessor = RegexRemovePreprocessor()
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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 RegexRemovePreprocessor be constructed?"""
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self.build_preprocessor()
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def test_output(self):
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"""Test the output of the RegexRemovePreprocessor"""
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pattern_lookup = {
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'disallow_whitespace': [r'\s*\Z'],
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'disallow_tab_newline': [r'\t\Z', r'\n\Z']
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}
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expected_cell_count = {
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'default': 6, # nothing is removed
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'disallow_whitespace': 2, # all "empty" cells are removed
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'disallow_tab_newline': 4, # cells with tab and newline are removed
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'none': 6,
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}
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for method in ['default', 'disallow_whitespace', 'disallow_tab_newline', 'none']:
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nb = self.build_notebook()
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res = self.build_resources()
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# Build the preprocessor and extend the list of patterns or use an empty list
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preprocessor = self.build_preprocessor()
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if method == 'none':
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preprocessor.patterns = []
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else:
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preprocessor.patterns.extend(pattern_lookup.get(method, []))
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nb, res = preprocessor(nb, res)
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self.assertEqual(len(nb.cells), expected_cell_count[method])
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# Make sure none of the cells match the pattern
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patterns = list(map(re.compile, preprocessor.patterns))
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for cell in nb.cells:
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for pattern in patterns:
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self.assertFalse(pattern.match(cell.source))
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