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86 lines
3.1 KiB
Python
86 lines
3.1 KiB
Python
"""
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Checks that files duplicated across schemes/implementations are consistent.
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"""
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import difflib
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import os
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import sys
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import yaml
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import helpers
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import pqclean
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sys.tracebacklimit = 0
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def pytest_generate_tests(metafunc):
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ids = []
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argvalues = []
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if 'duplicate_consistency' not in os.environ.get('PQCLEAN_SKIP_TESTS', '').split(','):
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for scheme in pqclean.Scheme.all_schemes():
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for implementation in scheme.implementations:
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if os.path.isfile(
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os.path.join(
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'duplicate_consistency',
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'{}_{}.yml'.format(scheme.name, implementation.name))):
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metafile = os.path.join(
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'duplicate_consistency',
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'{}_{}.yml'.format(scheme.name, implementation.name))
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with open(metafile, encoding='utf-8') as f:
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metadata = yaml.safe_load(f.read())
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for group in metadata['consistency_checks']:
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source = pqclean.Implementation.by_name(
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group['source']['scheme'],
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group['source']['implementation'])
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argvalues.append(
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(implementation, source, group['files']))
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ids.append(
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"{metafile}: {scheme.name} {implementation.name}"
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.format(scheme=scheme,
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implementation=implementation,
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metafile=metafile))
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else:
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# Placeholders so we don't crash
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ids = ['dummy']
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argvalues = [('dummy', 'dummy', 'dummy')]
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metafunc.parametrize(('implementation', 'source', 'files'),
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argvalues,
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ids=ids)
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def file_get_contents(filename):
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with open(filename) as file:
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return file.read()
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@helpers.filtered_test
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def test_duplicate_consistency(implementation, source, files):
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"""Test sets of files to be identical modulo namespacing"""
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messages = []
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for file in files:
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target_path = os.path.join(source.path(), file)
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this_path = os.path.join(implementation.path(), file)
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target_src = file_get_contents(target_path)
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this_src = file_get_contents(this_path)
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this_transformed_src = this_src.replace(
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implementation.namespace_prefix(), '')
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target_transformed_src = target_src.replace(
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source.namespace_prefix(), '')
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if not this_transformed_src == target_transformed_src:
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diff = difflib.unified_diff(
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this_transformed_src.splitlines(keepends=True),
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target_transformed_src.splitlines(keepends=True),
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fromfile=this_path,
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tofile=target_path)
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messages.append("{} differed:\n{}".format(file, ''.join(diff)))
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if messages:
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raise AssertionError("Files differed:\n{}".format('\n'.join(messages)))
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if __name__ == '__main__':
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import pytest
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pytest.main(sys.argv)
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