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kc3-lang/brotli/python/tests/compress_test.py

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  • Author : Alex Nicksay
    Date : 2016-12-20 08:40:47
    Hash : 89a5b6e6
    Message : Python: Simplify test suite generation by using unittest discovery (#485)

  • python/tests/compress_test.py
  • # Copyright 2016 The Brotli Authors. All rights reserved.
    #
    # Distributed under MIT license.
    # See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
    
    import unittest
    
    from . import _test_utils
    import brotli
    
    
    class TestCompress(_test_utils.TestCase):
    
        VARIANTS = {'quality': (1, 6, 9, 11), 'lgwin': (10, 15, 20, 24)}
    
        def _check_decompression(self, test_data, **kwargs):
            # Only dictionary is supported as a kwarg to brotli.decompress.
            if 'dictionary' in kwargs:
                kwargs = {'dictionary': kwargs['dictionary']}
            else:
                kwargs = {}
            # Write decompression to temp file and verify it matches the original.
            temp_uncompressed = _test_utils.get_temp_uncompressed_name(test_data)
            temp_compressed = _test_utils.get_temp_compressed_name(test_data)
            original = test_data
            with open(temp_uncompressed, 'wb') as out_file:
                with open(temp_compressed, 'rb') as in_file:
                    out_file.write(brotli.decompress(in_file.read(), **kwargs))
            self.assertFilesMatch(temp_uncompressed, original)
    
        def _compress(self, test_data, **kwargs):
            temp_compressed = _test_utils.get_temp_compressed_name(test_data)
            with open(temp_compressed, 'wb') as out_file:
                with open(test_data, 'rb') as in_file:
                    out_file.write(brotli.compress(in_file.read(), **kwargs))
    
        def _test_compress(self, test_data, **kwargs):
            self._compress(test_data, **kwargs)
            self._check_decompression(test_data, **kwargs)
    
        def _test_compress_custom_dictionary(self, test_data, **kwargs):
            with open(test_data, 'rb') as in_file:
                dictionary = in_file.read()
            kwargs['dictionary'] = dictionary
            self._compress(test_data, **kwargs)
            self._check_decompression(test_data, **kwargs)
    
    
    _test_utils.generate_test_methods(TestCompress, variants=TestCompress.VARIANTS)
    
    if __name__ == '__main__':
        unittest.main()