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compat: initialize LC_CTYPE locale on all Python versions and platforms...
compat: initialize LC_CTYPE locale on all Python versions and platforms Previously, the LC_CTYPE locale was not initialized according to user settings on all Python versions (e.g. never on Python 2) and platforms (e.g. not on some Python < 3.8 on Windows). This broke e.g. non-ASCII filenames passed to the Subversion bindings on Python 2, resulting in error messages like "file:///tmp/a%C3%A4 does not look like a Subversion repository to libsvn version 1.14.0". The following command could be used to test this functionality. Adding it to the test suite would be pointless, as the locale is always set to "C" during test runs. @command(b'check_initial_codeset', norepo=True) def check_initial_codeset(ui): codeset1 = locale.nl_langinfo(locale.CODESET) locale.setlocale(locale.LC_ALL, '') codeset2 = locale.nl_langinfo(locale.CODESET) assert codeset1 == codeset2
Gregory Szorc - - Load All Authors

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test_data_structures.py
255 lines | 8.9 KiB | text/x-python | PythonLexer
/ contrib / python-zstandard / tests / test_data_structures.py
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import sys
import unittest
import zstandard as zstd
from .common import (
make_cffi,
TestCase,
)
@make_cffi
class TestCompressionParameters(TestCase):
def test_bounds(self):
zstd.ZstdCompressionParameters(
window_log=zstd.WINDOWLOG_MIN,
chain_log=zstd.CHAINLOG_MIN,
hash_log=zstd.HASHLOG_MIN,
search_log=zstd.SEARCHLOG_MIN,
min_match=zstd.MINMATCH_MIN + 1,
target_length=zstd.TARGETLENGTH_MIN,
strategy=zstd.STRATEGY_FAST,
)
zstd.ZstdCompressionParameters(
window_log=zstd.WINDOWLOG_MAX,
chain_log=zstd.CHAINLOG_MAX,
hash_log=zstd.HASHLOG_MAX,
search_log=zstd.SEARCHLOG_MAX,
min_match=zstd.MINMATCH_MAX - 1,
target_length=zstd.TARGETLENGTH_MAX,
strategy=zstd.STRATEGY_BTULTRA2,
)
def test_from_level(self):
p = zstd.ZstdCompressionParameters.from_level(1)
self.assertIsInstance(p, zstd.CompressionParameters)
self.assertEqual(p.window_log, 19)
p = zstd.ZstdCompressionParameters.from_level(-4)
self.assertEqual(p.window_log, 19)
def test_members(self):
p = zstd.ZstdCompressionParameters(
window_log=10,
chain_log=6,
hash_log=7,
search_log=4,
min_match=5,
target_length=8,
strategy=1,
)
self.assertEqual(p.window_log, 10)
self.assertEqual(p.chain_log, 6)
self.assertEqual(p.hash_log, 7)
self.assertEqual(p.search_log, 4)
self.assertEqual(p.min_match, 5)
self.assertEqual(p.target_length, 8)
self.assertEqual(p.compression_strategy, 1)
p = zstd.ZstdCompressionParameters(compression_level=2)
self.assertEqual(p.compression_level, 2)
p = zstd.ZstdCompressionParameters(threads=4)
self.assertEqual(p.threads, 4)
p = zstd.ZstdCompressionParameters(
threads=2, job_size=1048576, overlap_log=6
)
self.assertEqual(p.threads, 2)
self.assertEqual(p.job_size, 1048576)
self.assertEqual(p.overlap_log, 6)
self.assertEqual(p.overlap_size_log, 6)
p = zstd.ZstdCompressionParameters(compression_level=-1)
self.assertEqual(p.compression_level, -1)
p = zstd.ZstdCompressionParameters(compression_level=-2)
self.assertEqual(p.compression_level, -2)
p = zstd.ZstdCompressionParameters(force_max_window=True)
self.assertEqual(p.force_max_window, 1)
p = zstd.ZstdCompressionParameters(enable_ldm=True)
self.assertEqual(p.enable_ldm, 1)
p = zstd.ZstdCompressionParameters(ldm_hash_log=7)
self.assertEqual(p.ldm_hash_log, 7)
p = zstd.ZstdCompressionParameters(ldm_min_match=6)
self.assertEqual(p.ldm_min_match, 6)
p = zstd.ZstdCompressionParameters(ldm_bucket_size_log=7)
self.assertEqual(p.ldm_bucket_size_log, 7)
p = zstd.ZstdCompressionParameters(ldm_hash_rate_log=8)
self.assertEqual(p.ldm_hash_every_log, 8)
self.assertEqual(p.ldm_hash_rate_log, 8)
def test_estimated_compression_context_size(self):
p = zstd.ZstdCompressionParameters(
window_log=20,
chain_log=16,
hash_log=17,
search_log=1,
min_match=5,
target_length=16,
strategy=zstd.STRATEGY_DFAST,
)
# 32-bit has slightly different values from 64-bit.
self.assertAlmostEqual(
p.estimated_compression_context_size(), 1294464, delta=400
)
def test_strategy(self):
with self.assertRaisesRegex(
ValueError, "cannot specify both compression_strategy"
):
zstd.ZstdCompressionParameters(strategy=0, compression_strategy=0)
p = zstd.ZstdCompressionParameters(strategy=2)
self.assertEqual(p.compression_strategy, 2)
p = zstd.ZstdCompressionParameters(strategy=3)
self.assertEqual(p.compression_strategy, 3)
def test_ldm_hash_rate_log(self):
with self.assertRaisesRegex(
ValueError, "cannot specify both ldm_hash_rate_log"
):
zstd.ZstdCompressionParameters(
ldm_hash_rate_log=8, ldm_hash_every_log=4
)
p = zstd.ZstdCompressionParameters(ldm_hash_rate_log=8)
self.assertEqual(p.ldm_hash_every_log, 8)
p = zstd.ZstdCompressionParameters(ldm_hash_every_log=16)
self.assertEqual(p.ldm_hash_every_log, 16)
def test_overlap_log(self):
with self.assertRaisesRegex(
ValueError, "cannot specify both overlap_log"
):
zstd.ZstdCompressionParameters(overlap_log=1, overlap_size_log=9)
p = zstd.ZstdCompressionParameters(overlap_log=2)
self.assertEqual(p.overlap_log, 2)
self.assertEqual(p.overlap_size_log, 2)
p = zstd.ZstdCompressionParameters(overlap_size_log=4)
self.assertEqual(p.overlap_log, 4)
self.assertEqual(p.overlap_size_log, 4)
@make_cffi
class TestFrameParameters(TestCase):
def test_invalid_type(self):
with self.assertRaises(TypeError):
zstd.get_frame_parameters(None)
# Python 3 doesn't appear to convert unicode to Py_buffer.
if sys.version_info[0] >= 3:
with self.assertRaises(TypeError):
zstd.get_frame_parameters(u"foobarbaz")
else:
# CPython will convert unicode to Py_buffer. But CFFI won't.
if zstd.backend == "cffi":
with self.assertRaises(TypeError):
zstd.get_frame_parameters(u"foobarbaz")
else:
with self.assertRaises(zstd.ZstdError):
zstd.get_frame_parameters(u"foobarbaz")
def test_invalid_input_sizes(self):
with self.assertRaisesRegex(
zstd.ZstdError, "not enough data for frame"
):
zstd.get_frame_parameters(b"")
with self.assertRaisesRegex(
zstd.ZstdError, "not enough data for frame"
):
zstd.get_frame_parameters(zstd.FRAME_HEADER)
def test_invalid_frame(self):
with self.assertRaisesRegex(zstd.ZstdError, "Unknown frame descriptor"):
zstd.get_frame_parameters(b"foobarbaz")
def test_attributes(self):
params = zstd.get_frame_parameters(zstd.FRAME_HEADER + b"\x00\x00")
self.assertEqual(params.content_size, zstd.CONTENTSIZE_UNKNOWN)
self.assertEqual(params.window_size, 1024)
self.assertEqual(params.dict_id, 0)
self.assertFalse(params.has_checksum)
# Lowest 2 bits indicate a dictionary and length. Here, the dict id is 1 byte.
params = zstd.get_frame_parameters(zstd.FRAME_HEADER + b"\x01\x00\xff")
self.assertEqual(params.content_size, zstd.CONTENTSIZE_UNKNOWN)
self.assertEqual(params.window_size, 1024)
self.assertEqual(params.dict_id, 255)
self.assertFalse(params.has_checksum)
# Lowest 3rd bit indicates if checksum is present.
params = zstd.get_frame_parameters(zstd.FRAME_HEADER + b"\x04\x00")
self.assertEqual(params.content_size, zstd.CONTENTSIZE_UNKNOWN)
self.assertEqual(params.window_size, 1024)
self.assertEqual(params.dict_id, 0)
self.assertTrue(params.has_checksum)
# Upper 2 bits indicate content size.
params = zstd.get_frame_parameters(
zstd.FRAME_HEADER + b"\x40\x00\xff\x00"
)
self.assertEqual(params.content_size, 511)
self.assertEqual(params.window_size, 1024)
self.assertEqual(params.dict_id, 0)
self.assertFalse(params.has_checksum)
# Window descriptor is 2nd byte after frame header.
params = zstd.get_frame_parameters(zstd.FRAME_HEADER + b"\x00\x40")
self.assertEqual(params.content_size, zstd.CONTENTSIZE_UNKNOWN)
self.assertEqual(params.window_size, 262144)
self.assertEqual(params.dict_id, 0)
self.assertFalse(params.has_checksum)
# Set multiple things.
params = zstd.get_frame_parameters(
zstd.FRAME_HEADER + b"\x45\x40\x0f\x10\x00"
)
self.assertEqual(params.content_size, 272)
self.assertEqual(params.window_size, 262144)
self.assertEqual(params.dict_id, 15)
self.assertTrue(params.has_checksum)
def test_input_types(self):
v = zstd.FRAME_HEADER + b"\x00\x00"
mutable_array = bytearray(len(v))
mutable_array[:] = v
sources = [
memoryview(v),
bytearray(v),
mutable_array,
]
for source in sources:
params = zstd.get_frame_parameters(source)
self.assertEqual(params.content_size, zstd.CONTENTSIZE_UNKNOWN)
self.assertEqual(params.window_size, 1024)
self.assertEqual(params.dict_id, 0)
self.assertFalse(params.has_checksum)