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# test VFS functionality without any particular filesystem type
try:
import uos
uos.mount
except (ImportError, AttributeError):
print("SKIP")
raise SystemExit
class Filesystem:
def __init__(self, id):
self.id = id
def mount(self, readonly, mkfs):
print(self.id, 'mount', readonly, mkfs)
def umount(self):
print(self.id, 'umount')
def ilistdir(self, dir):
print(self.id, 'ilistdir', dir)
return iter([('a%d' % self.id, 0, 0)])
def chdir(self, dir):
print(self.id, 'chdir', dir)
def getcwd(self):
print(self.id, 'getcwd')
return 'dir%d' % self.id
def mkdir(self, path):
print(self.id, 'mkdir', path)
def remove(self, path):
print(self.id, 'remove', path)
def rename(self, old_path, new_path):
print(self.id, 'rename', old_path, new_path)
def rmdir(self, path):
print(self.id, 'rmdir', path)
def stat(self, path):
print(self.id, 'stat', path)
return (self.id,)
def statvfs(self, path):
print(self.id, 'statvfs', path)
return (self.id,)
def open(self, file, mode):
print(self.id, 'open', file, mode)
# first we umount any existing mount points the target may have
try:
uos.umount('/')
except OSError:
pass
for path in uos.listdir('/'):
uos.umount('/' + path)
# stat root dir
print(uos.stat('/'))
# statvfs root dir; verify that f_namemax has a sensible size
print(uos.statvfs('/')[9] >= 32)
# getcwd when in root dir
print(uos.getcwd())
# basic mounting and listdir
uos.mount(Filesystem(1), '/test_mnt')
print(uos.listdir())
# ilistdir
i = uos.ilistdir()
print(next(i))
try:
next(i)
except StopIteration:
print('StopIteration')
try:
next(i)
except StopIteration:
print('StopIteration')
# referencing the mount point in different ways
print(uos.listdir('test_mnt'))
print(uos.listdir('/test_mnt'))
# mounting another filesystem
uos.mount(Filesystem(2), '/test_mnt2', readonly=True)
print(uos.listdir())
print(uos.listdir('/test_mnt2'))
# mounting over an existing mount point
try:
uos.mount(Filesystem(3), '/test_mnt2')
except OSError:
print('OSError')
# mkdir of a mount point
try:
uos.mkdir('/test_mnt')
except OSError:
print('OSError')
# rename across a filesystem
try:
uos.rename('/test_mnt/a', '/test_mnt2/b')
except OSError:
print('OSError')
# delegating to mounted filesystem
uos.chdir('test_mnt')
print(uos.listdir())
print(uos.getcwd())
uos.mkdir('test_dir')
uos.remove('test_file')
uos.rename('test_file', 'test_file2')
uos.rmdir('test_dir')
print(uos.stat('test_file'))
print(uos.statvfs('/test_mnt'))
open('test_file')
open('test_file', 'wb')
# umount
uos.umount('/test_mnt')
uos.umount('/test_mnt2')
# umount a non-existent mount point
try:
uos.umount('/test_mnt')
except OSError:
print('OSError')
# root dir
uos.mount(Filesystem(3), '/')
print(uos.stat('/'))
print(uos.statvfs('/'))
print(uos.listdir())
open('test')
uos.mount(Filesystem(4), '/mnt')
print(uos.listdir())
print(uos.listdir('/mnt'))
uos.chdir('/mnt')
print(uos.listdir())
# chdir to a subdir within root-mounted vfs, and then listdir
uos.chdir('/subdir')
print(uos.listdir())
uos.chdir('/')
uos.umount('/')
print(uos.listdir('/'))
uos.umount('/mnt')
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