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# 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 functools
import unittest
import brotli
from . import _test_utils
# Do not inherit from TestCase here to ensure that test methods
# are not run automatically and instead are run as part of a specific
# configuration below.
class _TestCompressor(object):
CHUNK_SIZE = 2048
def tearDown(self):
self.compressor = None
# super().tearDown() # Requires Py3+
def _check_decompression(self, test_data):
# 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()))
self.assert_files_match(temp_uncompressed, original)
def _test_single_process(self, test_data):
# Write single-shot compression to temp file.
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(self.compressor.process(in_file.read()))
out_file.write(self.compressor.finish())
self._check_decompression(test_data)
def _test_multiple_process(self, test_data):
# Write chunked compression to temp file.
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:
read_chunk = functools.partial(in_file.read, self.CHUNK_SIZE)
for data in iter(read_chunk, b''):
out_file.write(self.compressor.process(data))
out_file.write(self.compressor.finish())
self._check_decompression(test_data)
def _test_multiple_process_and_flush(self, test_data):
# Write chunked and flushed compression to temp file.
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:
read_chunk = functools.partial(in_file.read, self.CHUNK_SIZE)
for data in iter(read_chunk, b''):
out_file.write(self.compressor.process(data))
out_file.write(self.compressor.flush())
out_file.write(self.compressor.finish())
self._check_decompression(test_data)
_test_utils.generate_test_methods(_TestCompressor)
class TestCompressorQuality1(_TestCompressor, _test_utils.TestCase):
def setUp(self):
# super().setUp() # Requires Py3+
self.compressor = brotli.Compressor(quality=1)
class TestCompressorQuality6(_TestCompressor, _test_utils.TestCase):
def setUp(self):
# super().setUp() # Requires Py3+
self.compressor = brotli.Compressor(quality=6)
class TestCompressorQuality9(_TestCompressor, _test_utils.TestCase):
def setUp(self):
# super().setUp() # Requires Py3+
self.compressor = brotli.Compressor(quality=9)
class TestCompressorQuality11(_TestCompressor, _test_utils.TestCase):
def setUp(self):
# super().setUp() # Requires Py3+
self.compressor = brotli.Compressor(quality=11)
if __name__ == '__main__':
unittest.main()
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