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"""
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Module with tests for the execute preprocessor.
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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 copy
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import glob
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import io
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import os
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import re
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from IPython import nbformat
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from .base import PreprocessorTestsBase
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from ..execute import ExecutePreprocessor
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from IPython.nbconvert.filters import strip_ansi
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addr_pat = re.compile(r'0x[0-9a-f]{7,9}')
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class TestExecute(PreprocessorTestsBase):
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"""Contains test functions for execute.py"""
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@staticmethod
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def normalize_output(output):
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"""
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Normalizes outputs for comparison.
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"""
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output = dict(output)
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if 'metadata' in output:
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del output['metadata']
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if 'text' in output:
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output['text'] = re.sub(addr_pat, '<HEXADDR>', output['text'])
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if 'text/plain' in output.get('data', {}):
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output['data']['text/plain'] = \
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re.sub(addr_pat, '<HEXADDR>', output['data']['text/plain'])
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if 'traceback' in output:
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tb = []
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for line in output['traceback']:
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tb.append(strip_ansi(line))
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output['traceback'] = tb
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return output
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def assert_notebooks_equal(self, expected, actual):
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expected_cells = expected['cells']
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actual_cells = actual['cells']
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self.assertEqual(len(expected_cells), len(actual_cells))
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for expected_cell, actual_cell in zip(expected_cells, actual_cells):
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expected_outputs = expected_cell.get('outputs', [])
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actual_outputs = actual_cell.get('outputs', [])
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normalized_expected_outputs = list(map(self.normalize_output, expected_outputs))
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normalized_actual_outputs = list(map(self.normalize_output, actual_outputs))
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self.assertEqual(normalized_expected_outputs, normalized_actual_outputs)
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expected_execution_count = expected_cell.get('execution_count', None)
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actual_execution_count = actual_cell.get('execution_count', None)
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self.assertEqual(expected_execution_count, actual_execution_count)
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def build_preprocessor(self):
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"""Make an instance of a preprocessor"""
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preprocessor = ExecutePreprocessor()
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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 ExecutePreprocessor be constructed?"""
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self.build_preprocessor()
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def test_run_notebooks(self):
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"""Runs a series of test notebooks and compares them to their actual output"""
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current_dir = os.path.dirname(__file__)
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input_files = glob.glob(os.path.join(current_dir, 'files', '*.ipynb'))
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for filename in input_files:
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with io.open(filename) as f:
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input_nb = nbformat.read(f, 4)
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res = self.build_resources()
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res['metadata']['path'] = os.path.dirname(filename)
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preprocessor = self.build_preprocessor()
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cleaned_input_nb = copy.deepcopy(input_nb)
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for cell in cleaned_input_nb.cells:
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if 'execution_count' in cell:
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del cell['execution_count']
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cell['outputs'] = []
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output_nb, _ = preprocessor(cleaned_input_nb, res)
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if os.path.basename(filename) == "Disable Stdin.ipynb":
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# We need to special-case this particular notebook, because the
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# traceback contains machine-specific stuff like where IPython
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# is installed. It is sufficient here to just check that an error
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# was thrown, and that it was a StdinNotImplementedError
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self.assertEqual(len(output_nb['cells']), 1)
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self.assertEqual(len(output_nb['cells'][0]['outputs']), 1)
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output = output_nb['cells'][0]['outputs'][0]
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self.assertEqual(output['output_type'], 'error')
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self.assertEqual(output['ename'], 'StdinNotImplementedError')
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self.assertEqual(output['evalue'], 'raw_input was called, but this frontend does not support input requests.')
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else:
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self.assert_notebooks_equal(output_nb, input_nb)
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def test_empty_path(self):
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"""Can the kernel be started when the path is empty?"""
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current_dir = os.path.dirname(__file__)
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filename = os.path.join(current_dir, 'files', 'HelloWorld.ipynb')
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with io.open(filename) as f:
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input_nb = nbformat.read(f, 4)
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res = self.build_resources()
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res['metadata']['path'] = ''
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preprocessor = self.build_preprocessor()
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cleaned_input_nb = copy.deepcopy(input_nb)
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for cell in cleaned_input_nb.cells:
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if 'execution_count' in cell:
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del cell['execution_count']
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cell['outputs'] = []
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output_nb, _ = preprocessor(cleaned_input_nb, res)
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self.assert_notebooks_equal(output_nb, input_nb)
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