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# coding: utf-8
from __future__ import division, unicode_literals
import io
import zipfile
import contextlib
import tempfile
import shutil
import string
try:
import pathlib
except ImportError:
import pathlib2 as pathlib
if not hasattr(contextlib, 'ExitStack'):
import contextlib2
contextlib.ExitStack = contextlib2.ExitStack
try:
import unittest
unittest.TestCase.subTest
except AttributeError:
import unittest2 as unittest
import jaraco.itertools
import func_timeout
import zipp
__metaclass__ = type
consume = tuple
def add_dirs(zf):
"""
Given a writable zip file zf, inject directory entries for
any directories implied by the presence of children.
"""
for name in zipp.CompleteDirs._implied_dirs(zf.namelist()):
zf.writestr(name, b"")
return zf
def build_alpharep_fixture():
"""
Create a zip file with this structure:
.
├── a.txt
├── b
│ ├── c.txt
│ ├── d
│ │ └── e.txt
│ └── f.txt
└── g
└── h
└── i.txt
This fixture has the following key characteristics:
- a file at the root (a)
- a file two levels deep (b/d/e)
- multiple files in a directory (b/c, b/f)
- a directory containing only a directory (g/h)
"alpha" because it uses alphabet
"rep" because it's a representative example
"""
data = io.BytesIO()
zf = zipfile.ZipFile(data, "w")
zf.writestr("a.txt", b"content of a")
zf.writestr("b/c.txt", b"content of c")
zf.writestr("b/d/e.txt", b"content of e")
zf.writestr("b/f.txt", b"content of f")
zf.writestr("g/h/i.txt", b"content of i")
zf.filename = "alpharep.zip"
return zf
@contextlib.contextmanager
def temp_dir():
tmpdir = tempfile.mkdtemp()
try:
yield pathlib.Path(tmpdir)
finally:
shutil.rmtree(tmpdir)
class TestPath(unittest.TestCase):
def setUp(self):
self.fixtures = contextlib.ExitStack()
self.addCleanup(self.fixtures.close)
def zipfile_alpharep(self):
with self.subTest():
yield build_alpharep_fixture()
with self.subTest():
yield add_dirs(build_alpharep_fixture())
def zipfile_ondisk(self):
tmpdir = pathlib.Path(self.fixtures.enter_context(temp_dir()))
for alpharep in self.zipfile_alpharep():
buffer = alpharep.fp
alpharep.close()
path = tmpdir / alpharep.filename
with path.open("wb") as strm:
strm.write(buffer.getvalue())
yield path
def test_iterdir_and_types(self):
for alpharep in self.zipfile_alpharep():
root = zipp.Path(alpharep)
assert root.is_dir()
a, b, g = root.iterdir()
assert a.is_file()
assert b.is_dir()
assert g.is_dir()
c, f, d = b.iterdir()
assert c.is_file() and f.is_file()
e, = d.iterdir()
assert e.is_file()
h, = g.iterdir()
i, = h.iterdir()
assert i.is_file()
def test_open(self):
for alpharep in self.zipfile_alpharep():
root = zipp.Path(alpharep)
a, b, g = root.iterdir()
with a.open() as strm:
data = strm.read()
assert data == "content of a"
def test_read(self):
for alpharep in self.zipfile_alpharep():
root = zipp.Path(alpharep)
a, b, g = root.iterdir()
assert a.read_text() == "content of a"
assert a.read_bytes() == b"content of a"
def test_joinpath(self):
for alpharep in self.zipfile_alpharep():
root = zipp.Path(alpharep)
a = root.joinpath("a")
assert a.is_file()
e = root.joinpath("b").joinpath("d").joinpath("e.txt")
assert e.read_text() == "content of e"
def test_traverse_truediv(self):
for alpharep in self.zipfile_alpharep():
root = zipp.Path(alpharep)
a = root / "a"
assert a.is_file()
e = root / "b" / "d" / "e.txt"
assert e.read_text() == "content of e"
def test_traverse_simplediv(self):
"""
Disable the __future__.division when testing traversal.
"""
for alpharep in self.zipfile_alpharep():
code = compile(
source="zipp.Path(alpharep) / 'a'",
filename="(test)",
mode="eval",
dont_inherit=True,
)
eval(code)
def test_pathlike_construction(self):
"""
zipp.Path should be constructable from a path-like object
"""
for zipfile_ondisk in self.zipfile_ondisk():
pathlike = pathlib.Path(str(zipfile_ondisk))
zipp.Path(pathlike)
def test_traverse_pathlike(self):
for alpharep in self.zipfile_alpharep():
root = zipp.Path(alpharep)
root / pathlib.Path("a")
def test_parent(self):
for alpharep in self.zipfile_alpharep():
root = zipp.Path(alpharep)
assert (root / 'a').parent.at == ''
assert (root / 'a' / 'b').parent.at == 'a/'
def test_dir_parent(self):
for alpharep in self.zipfile_alpharep():
root = zipp.Path(alpharep)
assert (root / 'b').parent.at == ''
assert (root / 'b/').parent.at == ''
def test_missing_dir_parent(self):
for alpharep in self.zipfile_alpharep():
root = zipp.Path(alpharep)
assert (root / 'missing dir/').parent.at == ''
def test_mutability(self):
"""
If the underlying zipfile is changed, the Path object should
reflect that change.
"""
for alpharep in self.zipfile_alpharep():
root = zipp.Path(alpharep)
a, b, g = root.iterdir()
alpharep.writestr('foo.txt', b'foo')
alpharep.writestr('bar/baz.txt', b'baz')
assert any(
child.name == 'foo.txt'
for child in root.iterdir())
assert (root / 'foo.txt').read_text() == 'foo'
baz, = (root / 'bar').iterdir()
assert baz.read_text() == 'baz'
HUGE_ZIPFILE_NUM_ENTRIES = 2 ** 13
def huge_zipfile(self):
"""Create a read-only zipfile with a huge number of entries entries."""
strm = io.BytesIO()
zf = zipfile.ZipFile(strm, "w")
for entry in map(str, range(self.HUGE_ZIPFILE_NUM_ENTRIES)):
zf.writestr(entry, entry)
zf.mode = 'r'
return zf
def test_joinpath_constant_time(self):
"""
Ensure joinpath on items in zipfile is linear time.
"""
root = zipp.Path(self.huge_zipfile())
entries = jaraco.itertools.Counter(root.iterdir())
for entry in entries:
entry.joinpath('suffix')
# Check the file iterated all items
assert entries.count == self.HUGE_ZIPFILE_NUM_ENTRIES
@func_timeout.func_set_timeout(3)
def test_implied_dirs_performance(self):
data = ['/'.join(string.ascii_lowercase + str(n)) for n in range(10000)]
zipp.CompleteDirs._implied_dirs(data)
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