test_train_dictionary.py
46 lines
| 1.1 KiB
| text/x-python
|
PythonLexer
Gregory Szorc
|
r30435 | import sys | ||
| try: | ||||
| import unittest2 as unittest | ||||
| except ImportError: | ||||
| import unittest | ||||
| import zstd | ||||
| if sys.version_info[0] >= 3: | ||||
| int_type = int | ||||
| else: | ||||
| int_type = long | ||||
| class TestTrainDictionary(unittest.TestCase): | ||||
| def test_no_args(self): | ||||
| with self.assertRaises(TypeError): | ||||
| zstd.train_dictionary() | ||||
| def test_bad_args(self): | ||||
| with self.assertRaises(TypeError): | ||||
| zstd.train_dictionary(8192, u'foo') | ||||
| with self.assertRaises(ValueError): | ||||
| zstd.train_dictionary(8192, [u'foo']) | ||||
| def test_basic(self): | ||||
| samples = [] | ||||
| for i in range(128): | ||||
| samples.append(b'foo' * 64) | ||||
| samples.append(b'bar' * 64) | ||||
| samples.append(b'foobar' * 64) | ||||
| samples.append(b'baz' * 64) | ||||
| samples.append(b'foobaz' * 64) | ||||
| samples.append(b'bazfoo' * 64) | ||||
| d = zstd.train_dictionary(8192, samples) | ||||
| self.assertLessEqual(len(d), 8192) | ||||
| dict_id = d.dict_id() | ||||
| self.assertIsInstance(dict_id, int_type) | ||||
| data = d.as_bytes() | ||||
| self.assertEqual(data[0:4], b'\x37\xa4\x30\xec') | ||||