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|
import binascii
import hashlib
import os
import shutil
import pytest
import multivolumefile as MV
BLOCKSIZE = 8192
testdata_path = os.path.join(os.path.dirname(__file__), "data")
os.umask(0o022)
def test_read_check_sha1():
target = os.path.join(testdata_path, "archive.7z")
mv = MV.open(target, mode="rb")
sha = hashlib.sha256()
data = mv.read(BLOCKSIZE)
while len(data) > 0:
sha.update(data)
data = mv.read(BLOCKSIZE)
mv.close()
assert sha.digest() == binascii.unhexlify(
"e0cfeb8010d105d0e2d56d2f94d2b786ead352cef5bca579cb7689d08b3614d1"
)
def test_read_seek():
target = os.path.join(testdata_path, "archive.7z")
mv = MV.open(target, mode="rb")
assert mv.isatty() is False
assert mv.seekable()
mv.seek(40000)
pos = mv.tell()
assert pos == 40000
mv.seek(-1000, os.SEEK_CUR)
pos = mv.tell()
assert pos == 39000
mv.seek(-2337, os.SEEK_END)
pos = mv.tell()
assert pos == 50000
mv.close()
assert mv.readable() is False
mv.flush()
def test_read_context():
target = os.path.join(testdata_path, "archive.7z")
with MV.open(target, mode="rb") as mv:
assert mv.readable()
mv.seek(24900)
data = mv.read(200)
assert len(data) == 100
data = mv.read(200)
assert len(data) == 200
def test_readinto():
target = os.path.join(testdata_path, "archive.7z")
b = bytearray(200)
with MV.open(target, mode="rb") as mv:
mv.seek(24900)
size = mv.readinto(b)
assert size == 100
def test_read_boundary():
target = os.path.join(testdata_path, "archive.7z")
with MV.open(target, mode="rb") as mv:
mv.seek(24999)
b = mv.read(200)
assert len(b) == 1
def test_readinto_boundary():
target = os.path.join(testdata_path, "archive.7z")
b = bytearray(200)
with MV.open(target, mode="rb") as mv:
mv.seek(25000)
size = mv.readinto(b)
assert size == 200
sha = hashlib.sha256(b)
assert (
sha.digest()
== b"6\xbc\x92\n\xa53tY\x97\xaa`!\xf3\xa7\xaa\xc3\\V\xac\xc1p\x97\xb0\xf5M\xc0)\x12\x0eD$\x9a"
)
def test_readline():
target = os.path.join(testdata_path, "archive.7z")
with pytest.raises(NotImplementedError):
with MV.open(target, mode="rb") as mv:
mv.readline()
def test_readlines():
target = os.path.join(testdata_path, "archive.7z")
with pytest.raises(NotImplementedError):
with MV.open(target, mode="rb") as mv:
mv.readlines()
def test_readall():
target = os.path.join(testdata_path, "archive.7z")
with MV.open(target, mode="rb") as mv:
b = mv.readall()
sha = hashlib.sha256(b)
assert sha.digest() == binascii.unhexlify(
"e0cfeb8010d105d0e2d56d2f94d2b786ead352cef5bca579cb7689d08b3614d1"
)
def test_write(tmp_path):
target = tmp_path.joinpath("target.7z")
with MV.open(target, mode="wb", volume=10240) as volume:
assert volume.writable()
with open(os.path.join(testdata_path, "archive.7z.001"), "rb") as r:
data = r.read(BLOCKSIZE)
while len(data) > 0:
volume.write(data)
data = r.read(BLOCKSIZE)
with open(os.path.join(testdata_path, "archive.7z.002"), "rb") as r:
data = r.read(BLOCKSIZE)
while len(data) > 0:
volume.write(data)
data = r.read(BLOCKSIZE)
assert volume.seekable()
volume.seek(0)
volume.seek(51000)
volume.flush()
created = tmp_path.joinpath("target.7z.0001")
assert created.exists()
assert created.stat().st_size == 10240
def test_write_default_volume(tmp_path):
target = tmp_path.joinpath("target.7z").as_posix()
with MV.open(target, mode="wb") as volume:
with open(os.path.join(testdata_path, "archive.7z.001"), "rb") as r:
data = r.read(BLOCKSIZE)
while len(data) > 0:
volume.write(data)
data = r.read(BLOCKSIZE)
with open(os.path.join(testdata_path, "archive.7z.002"), "rb") as r:
data = r.read(BLOCKSIZE)
while len(data) > 0:
volume.write(data)
data = r.read(BLOCKSIZE)
assert volume.seekable()
volume.seek(0)
volume.seek(51000)
volume.flush()
created = tmp_path.joinpath("target.7z.0001")
assert created.exists()
assert created.stat().st_size == 52337
def test_write_posixpath(tmp_path):
target = tmp_path.joinpath("target.7z").as_posix()
with MV.open(target, mode="wb", volume=10240) as volume:
assert volume.writable()
with open(os.path.join(testdata_path, "archive.7z.001"), "rb") as r:
data = r.read(BLOCKSIZE)
while len(data) > 0:
volume.write(data)
data = r.read(BLOCKSIZE)
with open(os.path.join(testdata_path, "archive.7z.002"), "rb") as r:
data = r.read(BLOCKSIZE)
while len(data) > 0:
volume.write(data)
data = r.read(BLOCKSIZE)
assert volume.seekable()
volume.seek(0)
volume.seek(51000)
volume.flush()
created = tmp_path.joinpath("target.7z.0001")
assert created.exists()
assert created.stat().st_size == 10240
def test_write_boundary(tmp_path):
target = tmp_path.joinpath("target.7z")
with MV.open(target, mode="wb", volume=10240) as volume:
assert volume.writable()
with open(os.path.join(testdata_path, "archive.7z.001"), "rb") as r:
data = r.read(10000)
volume.write(data)
data = r.read(250)
volume.write(data)
volume.flush()
created = tmp_path.joinpath("target.7z.0002")
assert created.exists()
assert created.stat().st_size == 10
def test_write_exist(tmp_path):
target = tmp_path.joinpath("target.7z")
target_volume = tmp_path.joinpath("target.7z.0001")
shutil.copyfile(os.path.join(testdata_path, "archive.7z.001"), target_volume)
#
with MV.open(target, mode="wb", volume=10240) as volume:
assert volume.writable()
with open(os.path.join(testdata_path, "archive.7z.001"), "rb") as r:
data = r.read(10000)
volume.write(data)
volume.flush()
created = tmp_path.joinpath("target.7z.0001")
assert created.stat().st_size == 10000
def test_exclusive_write(tmp_path):
target = tmp_path.joinpath("target.7z")
with MV.open(target, mode="xb", volume=10240) as volume:
assert volume.writable()
with open(os.path.join(testdata_path, "archive.7z.001"), "rb") as r:
data = r.read(BLOCKSIZE)
while len(data) > 0:
volume.write(data)
data = r.read(BLOCKSIZE)
with open(os.path.join(testdata_path, "archive.7z.002"), "rb") as r:
data = r.read(BLOCKSIZE)
while len(data) > 0:
volume.write(data)
data = r.read(BLOCKSIZE)
assert volume.seekable()
volume.seek(0)
volume.seek(51000)
volume.flush()
created = tmp_path.joinpath("target.7z.0001")
assert created.exists()
assert created.stat().st_size == 10240
def test_exclusive_write_exist(tmp_path):
target = tmp_path.joinpath("target.7z")
target_volume = tmp_path.joinpath("target.7z.0001")
shutil.copyfile(os.path.join(testdata_path, "archive.7z.001"), target_volume)
with pytest.raises(FileExistsError):
MV.open(target, "x")
def test_write_append1(tmp_path):
target_volume = tmp_path.joinpath("target.7z.0001")
with target_volume.open(mode="wb") as target:
with open(os.path.join(testdata_path, "archive.7z.001"), "rb") as src:
target.write(src.read(1000))
#
target = tmp_path.joinpath("target.7z")
with MV.open(target, mode="ab", volume=10240) as volume:
assert volume.seekable() is False
with open(os.path.join(testdata_path, "archive.7z.001"), "rb") as src:
src.seek(1000)
volume.write(src.read(24000))
with open(os.path.join(testdata_path, "archive.7z.002"), "rb") as r:
data = r.read(BLOCKSIZE)
while len(data) > 0:
volume.write(data)
data = r.read(BLOCKSIZE)
volume.flush()
#
existed = tmp_path.joinpath("target.7z.0001")
assert existed.exists()
assert existed.stat().st_size == 10240
created2 = tmp_path.joinpath("target.7z.0002")
assert created2.exists()
assert created2.stat().st_size == 10240
created6 = tmp_path.joinpath("target.7z.0006")
assert created6.exists()
assert created6.stat().st_size == 1137
def test_write_append2(tmp_path):
target = tmp_path.joinpath("target.7z")
target_volume = tmp_path.joinpath("target.7z.0001")
shutil.copyfile(os.path.join(testdata_path, "archive.7z.001"), target_volume)
#
with MV.open(target, mode="ab", volume=10240) as volume:
with open(os.path.join(testdata_path, "archive.7z.002"), "rb") as r:
data = r.read(BLOCKSIZE)
while len(data) > 0:
volume.write(data)
data = r.read(BLOCKSIZE)
volume.flush()
#
existed = tmp_path.joinpath("target.7z.0001")
assert existed.exists()
assert existed.stat().st_size == 25000
created2 = tmp_path.joinpath("target.7z.0002")
assert created2.exists()
assert created2.stat().st_size == 10240
created4 = tmp_path.joinpath("target.7z.0004")
assert created4.exists()
assert created4.stat().st_size == 6857 # 52337 - 25000 - 10240 * 2
def test_read_double_close():
target = os.path.join(testdata_path, "archive.7z")
mv = MV.open(target, mode="rb")
assert not mv.closed
mv.close()
assert mv.closed
mv.close()
def test_read_fileno():
target = os.path.join(testdata_path, "archive.7z")
mv = MV.open(target, mode="rb")
with pytest.raises(RuntimeError):
mv.fileno()
mv.close()
def test_write_short_digits(tmp_path):
target = tmp_path.joinpath("target.7z")
with MV.MultiVolume(
target, mode="wb", volume=10240, ext_digits=3, ext_start=0
) as volume:
assert volume.writable()
with open(os.path.join(testdata_path, "archive.7z.001"), "rb") as r:
data = r.read(10000)
volume.write(data)
data = r.read(250)
volume.write(data)
volume.flush()
created = tmp_path.joinpath("target.7z.001")
assert created.exists()
assert created.stat().st_size == 10
def test_write_hex_digits(tmp_path):
target = tmp_path.joinpath("target.7z")
with MV.MultiVolume(
target, mode="wb", volume=800, hex=True, ext_digits=3, ext_start=0
) as volume:
assert volume.writable()
with open(os.path.join(testdata_path, "archive.7z.001"), "rb") as r:
for _ in range(5):
data = r.read(2000)
volume.write(data)
data = r.read(250)
volume.write(data)
volume.flush()
created = tmp_path.joinpath("target.7z.00c")
assert created.exists()
assert created.stat().st_size == 650
def test_unsupported_open_mode(tmp_path):
target = tmp_path.joinpath("target.7z")
with pytest.raises(NotImplementedError):
with MV.MultiVolume(target, mode="qb", volume=800):
pass
def test_stat():
target = os.path.join(testdata_path, "archive.7z")
first_target = os.path.join(testdata_path, "archive.7z.001")
with MV.open(target, mode="rb") as mv:
st = mv.stat()
assert st.st_size == 52337
assert st.st_mtime == os.stat(first_target).st_mtime
assert st.st_mtime_ns == os.stat(first_target).st_mtime_ns
assert st.st_dev == os.stat(first_target).st_dev
assert st.st_ino == 0
|
