1 # Copyright 2016 The Brotli Authors. All rights reserved. 2 # 3 # Distributed under MIT license. 4 # See file LICENSE for detail or copy at https://opensource.org/licenses/MIT 5 6 import subprocess 7 import unittest 8 9 from . import _test_utils 10 import brotli 11 12 BRO_ARGS = _test_utils.BRO_ARGS 13 TEST_ENV = _test_utils.TEST_ENV 14 15 16 def _get_original_name(test_data): 17 return test_data.split('.compressed')[0] 18 19 20 class TestBroDecompress(_test_utils.TestCase): 21 22 def _check_decompression(self, test_data): 23 # Verify decompression matches the original. 24 temp_uncompressed = _test_utils.get_temp_uncompressed_name(test_data) 25 original = _get_original_name(test_data) 26 self.assertFilesMatch(temp_uncompressed, original) 27 28 def _decompress_file(self, test_data): 29 temp_uncompressed = _test_utils.get_temp_uncompressed_name(test_data) 30 args = BRO_ARGS + ['-f', '-d', '-i', test_data, '-o', temp_uncompressed] 31 subprocess.check_call(args, env=TEST_ENV) 32 33 def _decompress_pipe(self, test_data): 34 temp_uncompressed = _test_utils.get_temp_uncompressed_name(test_data) 35 args = BRO_ARGS + ['-d'] 36 with open(temp_uncompressed, 'wb') as out_file: 37 with open(test_data, 'rb') as in_file: 38 subprocess.check_call( 39 args, stdin=in_file, stdout=out_file, env=TEST_ENV) 40 41 def _test_decompress_file(self, test_data): 42 self._decompress_file(test_data) 43 self._check_decompression(test_data) 44 45 def _test_decompress_pipe(self, test_data): 46 self._decompress_pipe(test_data) 47 self._check_decompression(test_data) 48 49 50 _test_utils.generate_test_methods(TestBroDecompress, for_decompression=True) 51 52 53 class TestBroCompress(_test_utils.TestCase): 54 55 VARIANTS = {'quality': (1, 6, 9, 11), 'lgwin': (10, 15, 20, 24)} 56 57 def _check_decompression(self, test_data, **kwargs): 58 # Write decompression to temp file and verify it matches the original. 59 temp_uncompressed = _test_utils.get_temp_uncompressed_name(test_data) 60 temp_compressed = _test_utils.get_temp_compressed_name(test_data) 61 original = test_data 62 args = BRO_ARGS + ['-f', '-d'] 63 args.extend(['-i', temp_compressed, '-o', temp_uncompressed]) 64 subprocess.check_call(args, env=TEST_ENV) 65 self.assertFilesMatch(temp_uncompressed, original) 66 67 def _compress_file(self, test_data, **kwargs): 68 temp_compressed = _test_utils.get_temp_compressed_name(test_data) 69 args = BRO_ARGS + ['-f'] 70 if 'quality' in kwargs: 71 args.extend(['-q', str(kwargs['quality'])]) 72 if 'lgwin' in kwargs: 73 args.extend(['--lgwin', str(kwargs['lgwin'])]) 74 args.extend(['-i', test_data, '-o', temp_compressed]) 75 subprocess.check_call(args, env=TEST_ENV) 76 77 def _compress_pipe(self, test_data, **kwargs): 78 temp_compressed = _test_utils.get_temp_compressed_name(test_data) 79 args = BRO_ARGS 80 if 'quality' in kwargs: 81 args.extend(['-q', str(kwargs['quality'])]) 82 if 'lgwin' in kwargs: 83 args.extend(['--lgwin', str(kwargs['lgwin'])]) 84 with open(temp_compressed, 'wb') as out_file: 85 with open(test_data, 'rb') as in_file: 86 subprocess.check_call( 87 args, stdin=in_file, stdout=out_file, env=TEST_ENV) 88 89 def _test_compress_file(self, test_data, **kwargs): 90 self._compress_file(test_data, **kwargs) 91 self._check_decompression(test_data) 92 93 def _test_compress_pipe(self, test_data, **kwargs): 94 self._compress_pipe(test_data, **kwargs) 95 self._check_decompression(test_data) 96 97 98 _test_utils.generate_test_methods( 99 TestBroCompress, variants=TestBroCompress.VARIANTS) 100 101 if __name__ == '__main__': 102 unittest.main() 103
