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https://github.com/henrydcase/pqc.git
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8a120b3be7
Use Python's built-in ``diflib`` to compute diffs between the two versions.
75 lines
2.6 KiB
Python
75 lines
2.6 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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def pytest_generate_tests(metafunc):
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ids = []
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argvalues = []
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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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for file in group['files']:
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argvalues.append((implementation, source, file))
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ids.append(
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"{scheme.name} {implementation.name} {source.scheme.name}: {file}"
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.format(scheme=scheme, source=source,
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implementation=implementation,
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file=file))
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metafunc.parametrize(('implementation', 'source', 'file'),
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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 f:
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return f.read()
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@helpers.skip_windows()
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@helpers.filtered_test
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def test_duplicate_consistency(implementation, source, file):
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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(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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raise AssertionError(
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"Files differed:\n"
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+ ''.join(diff))
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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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