def test_relative_cmd(self):
# When given the relative path with a directory part to an executable
# that exists, it should be returned.
base_dir, tail_dir = os.path.split(self.dir)
relpath = os.path.join(tail_dir, self.file)
with change_cwd(path=base_dir):
rv = which(relpath, path=self.temp_dir)
self.assertEqual(rv, relpath)
# But it shouldn't be searched in PATH directories (issue #16957).
with change_cwd(path=self.dir):
rv = which(relpath, path=base_dir)
self.assertIsNone(rv)
def test_non_matching_mode(self):
# Set the file read-only and ask for writeable files.
os.chmod(self.temp_file.name, stat.S_IREAD)
if os.access(self.temp_file.name, os.W_OK):
self.skipTest("can't set the file read-only")
rv = which(self.file, path=self.dir, mode=os.W_OK)
self.assertIsNone(rv)
def test_cwd(self):
# Issue #16957
base_dir = os.path.dirname(self.dir)
with change_cwd(path=self.dir):
rv = which(self.file, path=base_dir)
if sys.platform == "win32":
# Windows: current directory implicitly on PATH
self.assertEqual(rv, os.path.join(os.curdir, self.file))
else:
# Other platforms: shouldn't match in the current directory.
self.assertIsNone(rv)
def test_empty_path_no_PATH(self):
with EnvironmentVarGuard() as env:
env.pop("PATH", None)
rv = which(self.file)
self.assertIsNone(rv)
def test_empty_path(self):
with change_cwd(path=self.dir):
with EnvironmentVarGuard() as env:
env["PATH"] = self.dir
rv = which(self.file, path="")
self.assertIsNone(rv)
def test_environ_path(self):
with EnvironmentVarGuard() as env:
env["PATH"] = self.dir
rv = which(self.file)
self.assertEqual(rv, self.temp_file.name)
def test_pathext_checking(self):
# Ask for the file without the ".exe" extension, then ensure that
# it gets found properly with the extension.
rv = which(self.file[:-4], path=self.dir)
self.assertEqual(rv, self.temp_file.name[:-4] + ".EXE")
def test_nonexistent_file(self):
# Return None when no matching executable file is found on the path.
rv = which("foo.exe", path=self.dir)
self.assertIsNone(rv)
def test_relative_path(self):
base_dir, tail_dir = os.path.split(self.dir)
with change_cwd(path=base_dir):
rv = which(self.file, path=tail_dir)
self.assertEqual(rv, os.path.join(tail_dir, self.file))
def test_absolute_cmd(self):
# When given the fully qualified path to an executable that exists,
# it should be returned.
rv = which(self.temp_file.name, path=self.temp_dir)
self.assertEqual(rv, self.temp_file.name)
def test_basic(self):
# Given an EXE in a directory, it should be returned.
rv = which(self.file, path=self.dir)
self.assertEqual(rv, self.temp_file.name)