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60 lines
1.8 KiB
60 lines
1.8 KiB
# Copyright 2016 The Brotli Authors. All rights reserved.
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#
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# Distributed under MIT license.
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# See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
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import functools
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import unittest
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from . import _test_utils
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import brotli
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def _get_original_name(test_data):
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return test_data.split('.compressed')[0]
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class TestDecompressor(_test_utils.TestCase):
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CHUNK_SIZE = 1
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def setUp(self):
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self.decompressor = brotli.Decompressor()
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def tearDown(self):
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self.decompressor = None
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def _check_decompression(self, test_data):
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# Verify decompression matches the original.
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temp_uncompressed = _test_utils.get_temp_uncompressed_name(test_data)
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original = _get_original_name(test_data)
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self.assertFilesMatch(temp_uncompressed, original)
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def _decompress(self, test_data):
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temp_uncompressed = _test_utils.get_temp_uncompressed_name(test_data)
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with open(temp_uncompressed, 'wb') as out_file:
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with open(test_data, 'rb') as in_file:
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read_chunk = functools.partial(in_file.read, self.CHUNK_SIZE)
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for data in iter(read_chunk, b''):
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out_file.write(self.decompressor.process(data))
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self.assertTrue(self.decompressor.is_finished())
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def _test_decompress(self, test_data):
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self._decompress(test_data)
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self._check_decompression(test_data)
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def test_garbage_appended(self):
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with self.assertRaises(brotli.error):
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self.decompressor.process(brotli.compress(b'a') + b'a')
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def test_already_finished(self):
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self.decompressor.process(brotli.compress(b'a'))
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with self.assertRaises(brotli.error):
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self.decompressor.process(b'a')
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_test_utils.generate_test_methods(TestDecompressor, for_decompression=True)
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if __name__ == '__main__':
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unittest.main()
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