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"""
This script tests utility functions.
"""
import errno
import os
import os.path
import pathlib
import shutil
import tempfile
import unittest
from functools import (
partial)
from typing import (
Iterable, # Replaced by `collections.abc.Iterable` in 3.9.
Optional, # Replaced by `X | None` in 3.10.
Tuple) # Replaced by `tuple` in 3.9.
from pathspec.patterns.gitwildmatch import (
GitWildMatchPattern)
from pathspec.util import (
RecursionError,
check_match_file,
iter_tree_entries,
iter_tree_files,
match_file,
normalize_file)
from tests.util import (
make_dirs,
make_files,
make_links,
mkfile,
ospath)
class CheckMatchFileTest(unittest.TestCase):
"""
The :class:`CheckMatchFileTest` class tests the :meth:`.check_match_file`
function.
"""
def test_01_single_1_include(self):
"""
Test checking a single file that is included.
"""
patterns = list(enumerate(map(GitWildMatchPattern, [
"*.txt",
"!test/",
])))
include_index = check_match_file(patterns, "include.txt")
self.assertEqual(include_index, (True, 0))
def test_01_single_2_exclude(self):
"""
Test checking a single file that is excluded.
"""
patterns = list(enumerate(map(GitWildMatchPattern, [
"*.txt",
"!test/",
])))
include_index = check_match_file(patterns, "test/exclude.txt")
self.assertEqual(include_index, (False, 1))
def test_01_single_3_unmatch(self):
"""
Test checking a single file that is ignored.
"""
patterns = list(enumerate(map(GitWildMatchPattern, [
"*.txt",
"!test/",
])))
include_index = check_match_file(patterns, "unmatch.bin")
self.assertEqual(include_index, (None, None))
def test_02_many(self):
"""
Test matching files individually.
"""
patterns = list(enumerate(map(GitWildMatchPattern, [
'*.txt',
'!b.txt',
])))
files = {
'X/a.txt',
'X/b.txt',
'X/Z/c.txt',
'Y/a.txt',
'Y/b.txt',
'Y/Z/c.txt',
}
includes = {
__file
for __file in files
if check_match_file(patterns, __file)[0]
}
self.assertEqual(includes, {
'X/a.txt',
'X/Z/c.txt',
'Y/a.txt',
'Y/Z/c.txt',
})
class IterTreeTest(unittest.TestCase):
"""
The :class:`IterTreeTest` class tests :meth:`.iter_tree_entries` and
:meth:`.iter_tree_files` functions.
"""
def make_dirs(self, dirs: Iterable[str]) -> None:
"""
Create the specified directories.
"""
make_dirs(self.temp_dir, dirs)
def make_files(self, files: Iterable[str]) -> None:
"""
Create the specified files.
"""
make_files(self.temp_dir, files)
def make_links(self, links: Iterable[Tuple[str, str]]) -> None:
"""
Create the specified links.
"""
make_links(self.temp_dir, links)
def require_symlink(self) -> None:
"""
Skips the test if `os.symlink` is not supported.
"""
if self.no_symlink:
raise unittest.SkipTest("`os.symlink` is not supported.")
def setUp(self) -> None:
"""
Called before each test.
"""
self.temp_dir = pathlib.Path(tempfile.mkdtemp())
def tearDown(self) -> None:
"""
Called after each test.
"""
shutil.rmtree(self.temp_dir)
def test_01_files(self):
"""
Tests to make sure all files are found.
"""
self.make_dirs([
'Empty',
'Dir',
'Dir/Inner',
])
self.make_files([
'a',
'b',
'Dir/c',
'Dir/d',
'Dir/Inner/e',
'Dir/Inner/f',
])
results = set(iter_tree_files(self.temp_dir))
self.assertEqual(results, set(map(ospath, [
'a',
'b',
'Dir/c',
'Dir/d',
'Dir/Inner/e',
'Dir/Inner/f',
])))
def test_02_link_1_check_1_symlink(self):
"""
Tests whether links can be created.
"""
# NOTE: Windows Vista and greater supports `os.symlink` for Python
# 3.2+.
no_symlink: Optional[bool] = None
try:
file = self.temp_dir / 'file'
link = self.temp_dir / 'link'
mkfile(file)
try:
os.symlink(file, link)
except (AttributeError, NotImplementedError, OSError):
no_symlink = True
else:
no_symlink = False
finally:
self.__class__.no_symlink = no_symlink
def test_02_link_2_links(self):
"""
Tests to make sure links to directories and files work.
"""
self.require_symlink()
self.make_dirs([
'Dir',
])
self.make_files([
'a',
'b',
'Dir/c',
'Dir/d',
])
self.make_links([
('ax', 'a'),
('bx', 'b'),
('Dir/cx', 'Dir/c'),
('Dir/dx', 'Dir/d'),
('DirX', 'Dir'),
])
results = set(iter_tree_files(self.temp_dir))
self.assertEqual(results, set(map(ospath, [
'a',
'ax',
'b',
'bx',
'Dir/c',
'Dir/cx',
'Dir/d',
'Dir/dx',
'DirX/c',
'DirX/cx',
'DirX/d',
'DirX/dx',
])))
def test_02_link_3_sideways_links(self):
"""
Tests to make sure the same directory can be encountered multiple
times via links.
"""
self.require_symlink()
self.make_dirs([
'Dir',
'Dir/Target',
])
self.make_files([
'Dir/Target/file',
])
self.make_links([
('Ax', 'Dir'),
('Bx', 'Dir'),
('Cx', 'Dir/Target'),
('Dx', 'Dir/Target'),
('Dir/Ex', 'Dir/Target'),
('Dir/Fx', 'Dir/Target'),
])
results = set(iter_tree_files(self.temp_dir))
self.assertEqual(results, set(map(ospath, [
'Ax/Ex/file',
'Ax/Fx/file',
'Ax/Target/file',
'Bx/Ex/file',
'Bx/Fx/file',
'Bx/Target/file',
'Cx/file',
'Dx/file',
'Dir/Ex/file',
'Dir/Fx/file',
'Dir/Target/file',
])))
def test_02_link_4_recursive_links(self):
"""
Tests detection of recursive links.
"""
self.require_symlink()
self.make_dirs([
'Dir',
])
self.make_files([
'Dir/file',
])
self.make_links([
('Dir/Self', 'Dir'),
])
with self.assertRaises(RecursionError) as context:
set(iter_tree_files(self.temp_dir))
self.assertEqual(context.exception.first_path, 'Dir')
self.assertEqual(context.exception.second_path, ospath('Dir/Self'))
def test_02_link_5_recursive_circular_links(self):
"""
Tests detection of recursion through circular links.
"""
self.require_symlink()
self.make_dirs([
'A',
'B',
'C',
])
self.make_files([
'A/d',
'B/e',
'C/f',
])
self.make_links([
('A/Bx', 'B'),
('B/Cx', 'C'),
('C/Ax', 'A'),
])
with self.assertRaises(RecursionError) as context:
set(iter_tree_files(self.temp_dir))
self.assertIn(context.exception.first_path, ('A', 'B', 'C'))
self.assertEqual(context.exception.second_path, {
'A': ospath('A/Bx/Cx/Ax'),
'B': ospath('B/Cx/Ax/Bx'),
'C': ospath('C/Ax/Bx/Cx'),
}[context.exception.first_path])
def test_02_link_6_detect_broken_links(self):
"""
Tests that broken links are detected.
"""
def reraise(e):
raise e
self.require_symlink()
self.make_links([
('A', 'DOES_NOT_EXIST'),
])
with self.assertRaises(OSError) as context:
set(iter_tree_files(self.temp_dir, on_error=reraise))
self.assertEqual(context.exception.errno, errno.ENOENT)
def test_02_link_7_ignore_broken_links(self):
"""
Tests that broken links are ignored.
"""
self.require_symlink()
self.make_links([
('A', 'DOES_NOT_EXIST'),
])
results = set(iter_tree_files(self.temp_dir))
self.assertEqual(results, set())
def test_02_link_8_no_follow_links(self):
"""
Tests to make sure directory links can be ignored.
"""
self.require_symlink()
self.make_dirs([
'Dir',
])
self.make_files([
'A',
'B',
'Dir/C',
'Dir/D',
])
self.make_links([
('Ax', 'A'),
('Bx', 'B'),
('Dir/Cx', 'Dir/C'),
('Dir/Dx', 'Dir/D'),
('DirX', 'Dir'),
])
results = set(iter_tree_files(self.temp_dir, follow_links=False))
self.assertEqual(results, set(map(ospath, [
'A',
'Ax',
'B',
'Bx',
'Dir/C',
'Dir/Cx',
'Dir/D',
'Dir/Dx',
'DirX',
])))
def test_03_entries(self):
"""
Tests to make sure all files are found.
"""
self.make_dirs([
'Empty',
'Dir',
'Dir/Inner',
])
self.make_files([
'a',
'b',
'Dir/c',
'Dir/d',
'Dir/Inner/e',
'Dir/Inner/f',
])
results = {entry.path for entry in iter_tree_entries(self.temp_dir)}
self.assertEqual(results, set(map(ospath, [
'a',
'b',
'Dir',
'Dir/c',
'Dir/d',
'Dir/Inner',
'Dir/Inner/e',
'Dir/Inner/f',
'Empty',
])))
class MatchFileTest(unittest.TestCase):
"""
The :class:`MatchFileTest` class tests the :meth:`.match_file`
function.
"""
def test_01_single_1_include(self):
"""
Test checking a single file that is included.
"""
patterns = list(map(GitWildMatchPattern, [
"*.txt",
"!test/",
]))
include = match_file(patterns, "include.txt")
self.assertIs(include, True)
def test_01_single_2_exclude(self):
"""
Test checking a single file that is excluded.
"""
patterns = list(map(GitWildMatchPattern, [
"*.txt",
"!test/",
]))
include = match_file(patterns, "test/exclude.txt")
self.assertIs(include, False)
def test_01_single_3_unmatch(self):
"""
Test checking a single file that is ignored.
"""
patterns = list(map(GitWildMatchPattern, [
"*.txt",
"!test/",
]))
include = match_file(patterns, "unmatch.bin")
self.assertIs(include, False)
def test_02_many(self):
"""
Test matching files individually.
"""
patterns = list(map(GitWildMatchPattern, [
'*.txt',
'!b.txt',
]))
files = {
'X/a.txt',
'X/b.txt',
'X/Z/c.txt',
'Y/a.txt',
'Y/b.txt',
'Y/Z/c.txt',
}
includes = set(filter(partial(match_file, patterns), files))
self.assertEqual(includes, {
'X/a.txt',
'X/Z/c.txt',
'Y/a.txt',
'Y/Z/c.txt',
})
class NormalizeFileTest(unittest.TestCase):
"""
The :class:`NormalizeFileTest` class tests the :meth:`.normalize_file`
function.
"""
def test_01_purepath(self):
"""
Tests normalizing a :class:`pathlib.PurePath` as argument.
"""
first_spec = normalize_file(pathlib.PurePath('a.txt'))
second_spec = normalize_file('a.txt')
self.assertEqual(first_spec, second_spec)
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