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# test importing of invalid .mpy files
try:
import sys, io, vfs
io.IOBase
except (ImportError, AttributeError):
print("SKIP")
raise SystemExit
class UserFile(io.IOBase):
def __init__(self, data):
self.data = memoryview(data)
self.pos = 0
def readinto(self, buf):
n = min(len(buf), len(self.data) - self.pos)
buf[:n] = self.data[self.pos : self.pos + n]
self.pos += n
return n
def ioctl(self, req, arg):
return 0
class UserFS:
def __init__(self, files):
self.files = files
def mount(self, readonly, mksfs):
pass
def umount(self):
pass
def stat(self, path):
if path in self.files:
return (32768, 0, 0, 0, 0, 0, 0, 0, 0, 0)
raise OSError
def open(self, path, mode):
return UserFile(self.files[path])
# these are the test .mpy files
user_files = {
"/mod0.mpy": b"", # empty file
"/mod1.mpy": b"M", # too short header
"/mod2.mpy": b"M\x00\x00\x00", # bad version
}
# create and mount a user filesystem
vfs.mount(UserFS(user_files), "/userfs")
sys.path.append("/userfs")
# import .mpy files from the user filesystem
for i in range(len(user_files)):
mod = "mod%u" % i
try:
__import__(mod)
except ValueError as er:
print(mod, "ValueError", er)
# unmount and undo path addition
vfs.umount("/userfs")
sys.path.pop()
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