# 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

import brotli

from . import _test_utils


class TestCompress(_test_utils.TestCase):

  VARIANTS = {'quality': (1, 6, 9, 11), 'lgwin': (10, 15, 20, 24)}

  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 _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)


_test_utils.generate_test_methods(TestCompress, variants=TestCompress.VARIANTS)

if __name__ == '__main__':
  unittest.main()