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trezor-firmware/core/tests/test_trezor.io.fatfs.py
matejcik 3789a3372b core/sdcard: modify exception handling in fatfs
expose ff.c constants, raise them as arguments to FatFSError

introduce NotMounted and NoFilesystem as subclasses of FatFSError with
the appropriate error code set
2020-03-20 14:03:28 +01:00

229 lines
7.7 KiB
Python

from common import *
from trezorio import sdcard, fatfs
class TestTrezorIoFatfs(unittest.TestCase):
def setUp(self):
sdcard.power_on()
fatfs.mkfs()
fatfs.mount()
def tearDown(self):
fatfs.unmount()
sdcard.power_off()
def _filename(self, suffix=""):
return "FILE%s.TXT" % suffix
def _dirname(self, suffix=""):
return "TREZOR%s" % suffix
def test_basic(self):
# test just the stuff in setup and teardown
pass
def test_mkdir(self):
fatfs.mkdir("/%s" % self._dirname())
s = fatfs.stat("/%s" % self._dirname())
self.assertEqual(s, (0, "---d-", self._dirname()))
def test_listdir(self):
fatfs.mkdir("/%s" % self._dirname())
with fatfs.open("/%s" % self._filename(), "w") as f:
f.write(bytearray(b"test"))
with fatfs.open("/%s/%s" % (self._dirname(), self._filename("2")), "w") as f:
f.write(bytearray(b"testtest"))
l = [e for e in fatfs.listdir("/")]
self.assertEqual(
l, [(0, "---d-", self._dirname()), (4, "----a", self._filename())]
)
l = [e for e in fatfs.listdir("/%s" % self._dirname())]
self.assertEqual(l, [(8, "----a", self._filename("2"))])
def test_unlink(self):
fatfs.mkdir("/%s" % self._dirname())
with fatfs.open("/%s" % self._filename(), "w") as f:
f.write(bytearray(b"test"))
s = fatfs.stat("/%s" % self._dirname())
self.assertEqual(s, (0, "---d-", self._dirname()))
s = fatfs.stat("/%s" % self._filename())
self.assertEqual(s, (4, "----a", self._filename()))
fatfs.unlink("/%s" % self._dirname())
fatfs.unlink("/%s" % self._filename())
with self.assertRaises(fatfs.FatFSError):
fatfs.stat("/%s" % self._dirname())
with self.assertRaises(fatfs.FatFSError):
self.assertRaises(fatfs.stat("/%s" % self._filename()))
def test_rename(self):
fatfs.mkdir("/%s" % self._dirname())
with fatfs.open("/%s" % self._filename(), "w") as f:
f.write(bytearray(b"test"))
s = fatfs.stat("/%s" % self._dirname())
self.assertEqual(s, (0, "---d-", self._dirname()))
s = fatfs.stat("/%s" % self._filename())
self.assertEqual(s, (4, "----a", self._filename()))
fatfs.rename("/%s" % self._dirname(), "/%s" % self._dirname("2"))
fatfs.rename("/%s" % self._filename(), "/%s" % self._filename("2"))
with self.assertRaises(fatfs.FatFSError):
fatfs.stat("/%s" % self._dirname())
with self.assertRaises(fatfs.FatFSError):
self.assertRaises(fatfs.stat("/%s" % self._filename()))
s = fatfs.stat("/%s" % self._dirname("2"))
self.assertEqual(s, (0, "---d-", self._dirname("2")))
s = fatfs.stat("/%s" % self._filename("2"))
self.assertEqual(s, (4, "----a", self._filename("2")))
def test_open_rw(self):
with fatfs.open("/%s" % self._filename(), "w") as f:
f.write(bytearray(b"test"))
with fatfs.open("/%s" % self._filename(), "r") as f:
b = bytearray(100)
r = f.read(b)
self.assertEqual(r, 4)
self.assertEqual(bytes(b[:4]), b"test")
def test_open_a(self):
with fatfs.open("/%s" % self._filename(), "w") as f:
f.write(bytearray(b"test" * 200))
with fatfs.open("/%s" % self._filename(), "a") as f:
f.seek(800)
f.write(bytearray(b"TEST" * 200))
with fatfs.open("/%s" % self._filename(), "r") as f:
b = bytearray(2000)
r = f.read(b)
self.assertEqual(r, 1600)
self.assertEqual(bytes(b[:1600]), b"test" * 200 + b"TEST" * 200)
def test_seek(self):
with fatfs.open("/%s" % self._filename(), "w+") as f:
f.write(bytearray(b"test" * 10))
f.seek(2)
b = bytearray(8)
r = f.read(b)
self.assertEqual(r, 8)
self.assertEqual(bytes(b[:8]), b"sttestte")
def test_truncate(self):
with fatfs.open("/%s" % self._filename(), "w") as f:
f.write(bytearray(b"test" * 100))
s = fatfs.stat("/%s" % self._filename())
self.assertEqual(s, (400, "----a", self._filename()))
with fatfs.open("/%s" % self._filename(), "a") as f:
f.seek(111)
f.truncate()
s = fatfs.stat("/%s" % self._filename())
self.assertEqual(s, (111, "----a", self._filename()))
class TestTrezorIoFatfsLfn(TestTrezorIoFatfs):
def _filename(self, suffix=""):
return "reallylongfilename%s.textfile" % suffix
def _dirname(self, suffix=""):
return "reallylongdirname%s" % suffix
class TestTrezorIoFatfsMounting(unittest.TestCase):
MOUNTED_METHODS = [
("open", ("hello.txt", "w")),
("listdir", ("",)),
("mkdir", ("testdir",)),
("unlink", ("hello.txt",)),
("stat", ("testdir",)),
("rename", ("testdir", "newdir")),
("setlabel", ("label",)),
]
UNMOUNTED_METHODS = [
("mkfs", ()),
]
def setUp(self):
sdcard.power_on()
def tearDown(self):
sdcard.power_off()
def test_mount_unmount(self):
fatfs.mkfs()
self.assertFalse(fatfs.is_mounted())
fatfs.mount()
self.assertTrue(fatfs.is_mounted())
fatfs.mount()
self.assertTrue(fatfs.is_mounted())
fatfs.unmount()
self.assertFalse(fatfs.is_mounted())
def test_no_filesystem(self):
# trash FAT table
sdcard.write(0, bytes([0xFF] * sdcard.BLOCK_SIZE))
self.assertFalse(fatfs.is_mounted())
try:
fatfs.mount()
self.fail("should have raised")
except fatfs.FatFSError as e:
self.assertIsInstance(e, fatfs.NoFilesystem)
# check that the proper error code is set on the NoFilesystem subclass
self.assertEqual(e.args[0], fatfs.FR_NO_FILESYSTEM)
self.assertFalse(fatfs.is_mounted())
def test_mounted(self):
fatfs.mkfs()
fatfs.mount()
self.assertTrue(fatfs.is_mounted())
for name, call in self.MOUNTED_METHODS:
function = getattr(fatfs, name)
function(*call)
for name, call in self.UNMOUNTED_METHODS:
function = getattr(fatfs, name)
try:
function(*call)
self.fail("should have raised")
except fatfs.FatFSError as e:
self.assertEqual(e.args[0], fatfs.FR_LOCKED)
def test_unmounted(self):
fatfs.unmount()
fatfs.mkfs()
self.assertFalse(fatfs.is_mounted())
for name, call in self.UNMOUNTED_METHODS:
function = getattr(fatfs, name)
function(*call)
self.assertFalse(fatfs.is_mounted())
for name, call in self.MOUNTED_METHODS:
function = getattr(fatfs, name)
try:
function(*call)
self.fail("should have raised")
except fatfs.FatFSError as e:
self.assertIsInstance(e, fatfs.NotMounted)
# check that the proper error code is set on the NotMounted subclass
self.assertEqual(e.args[0], fatfs.FR_NOT_READY)
class TestTrezorIoFatfsAndSdcard(unittest.TestCase):
def test_sd_power(self):
sdcard.power_off()
self.assertFalse(fatfs.is_mounted())
self.assertRaises(fatfs.FatFSError, fatfs.mount)
sdcard.power_on()
self.assertFalse(fatfs.is_mounted())
fatfs.mkfs()
fatfs.mount()
self.assertTrue(fatfs.is_mounted())
sdcard.power_off()
self.assertFalse(fatfs.is_mounted())
if __name__ == "__main__":
unittest.main()