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# Test for VfsLittle using a RAM device
try:
import os, vfs
vfs.VfsLfs1
vfs.VfsLfs2
except (ImportError, AttributeError):
print("SKIP")
raise SystemExit
class RAMBlockDevice:
ERASE_BLOCK_SIZE = 1024
def __init__(self, blocks):
self.data = bytearray(blocks * self.ERASE_BLOCK_SIZE)
def readblocks(self, block, buf, off):
addr = block * self.ERASE_BLOCK_SIZE + off
for i in range(len(buf)):
buf[i] = self.data[addr + i]
def writeblocks(self, block, buf, off):
addr = block * self.ERASE_BLOCK_SIZE + off
for i in range(len(buf)):
self.data[addr + i] = buf[i]
def ioctl(self, op, arg):
if op == 4: # block count
return len(self.data) // self.ERASE_BLOCK_SIZE
if op == 5: # block size
return self.ERASE_BLOCK_SIZE
if op == 6: # erase block
return 0
def print_stat(st, print_size=True):
# don't print times (just check that they have the correct type)
print(st[:6], st[6] if print_size else -1, type(st[7]), type(st[8]), type(st[9]))
def test(bdev, vfs_class):
print("test", vfs_class)
# mkfs
vfs_class.mkfs(bdev)
# construction
fs = vfs_class(bdev)
# statvfs
print(fs.statvfs("/"))
# open, write close
f = fs.open("test", "w")
f.write("littlefs")
f.close()
# statvfs after creating a file
print(fs.statvfs("/"))
# ilistdir
print(list(fs.ilistdir()))
print(list(fs.ilistdir("/")))
print(list(fs.ilistdir(b"/")))
# mkdir, rmdir
fs.mkdir("testdir")
print(list(fs.ilistdir()))
print(sorted(list(fs.ilistdir("testdir"))))
fs.rmdir("testdir")
print(list(fs.ilistdir()))
fs.mkdir("testdir")
# stat a file
print_stat(fs.stat("test"))
# stat a dir (size seems to vary on LFS2 so don't print that)
print_stat(fs.stat("testdir"), False)
# read
with fs.open("test", "r") as f:
print(f.read())
# create large file
with fs.open("testbig", "w") as f:
data = "large012" * 32 * 16
print("data length:", len(data))
for i in range(4):
print("write", i)
f.write(data)
# stat after creating large file
print(fs.statvfs("/"))
# rename
fs.rename("testbig", "testbig2")
print(sorted(list(fs.ilistdir())))
fs.chdir("testdir")
fs.rename("/testbig2", "testbig2")
print(sorted(list(fs.ilistdir())))
fs.rename("testbig2", "/testbig2")
fs.chdir("/")
print(sorted(list(fs.ilistdir())))
# remove
fs.remove("testbig2")
print(sorted(list(fs.ilistdir())))
# getcwd, chdir
fs.mkdir("/testdir2")
fs.mkdir("/testdir/subdir")
print(fs.getcwd())
fs.chdir("/testdir")
print(fs.getcwd())
# create file in directory to make sure paths are relative
fs.open("test2", "w").close()
print_stat(fs.stat("test2"))
print_stat(fs.stat("/testdir/test2"))
fs.remove("test2")
# chdir back to root and remove testdir
fs.chdir("/")
print(fs.getcwd())
fs.chdir("testdir")
print(fs.getcwd())
fs.chdir("..")
print(fs.getcwd())
fs.chdir("testdir/subdir")
print(fs.getcwd())
fs.chdir("../..")
print(fs.getcwd())
fs.chdir("/./testdir2")
print(fs.getcwd())
fs.chdir("../testdir")
print(fs.getcwd())
fs.chdir("../..")
print(fs.getcwd())
fs.chdir(".//testdir")
print(fs.getcwd())
fs.chdir("subdir/./")
print(fs.getcwd())
fs.chdir("/")
print(fs.getcwd())
fs.rmdir("testdir/subdir")
fs.rmdir("testdir")
fs.rmdir("testdir2")
bdev = RAMBlockDevice(30)
test(bdev, vfs.VfsLfs1)
test(bdev, vfs.VfsLfs2)
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