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trezor-firmware/core/tests/test_trezor.io.fatfs.py

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from common import *
from trezorio import sdcard, fatfs
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class TestTrezorIoFatfs(unittest.TestCase):
def setUp(self):
sdcard.power_on()
fatfs.mkfs()
fatfs.mount()
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def tearDown(self):
fatfs.unmount()
sdcard.power_off()
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def _filename(self, suffix=""):
return f"FILE{suffix}.TXT"
def _dirname(self, suffix=""):
return f"TREZOR{suffix}"
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def test_basic(self):
# test just the stuff in setup and teardown
pass
def test_mkdir(self):
fatfs.mkdir(f"/{self._dirname()}")
s = fatfs.stat(f"/{self._dirname()}")
self.assertEqual(s, (0, "---d-", self._dirname()))
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def test_listdir(self):
fatfs.mkdir(f"/{self._dirname()}")
with fatfs.open(f"{self._filename()}", "w") as f:
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f.write(bytearray(b"test"))
with fatfs.open(f"/{self._dirname()}/{self._filename('2')}", "w") as f:
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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(f"/{self._dirname()}")]
self.assertEqual(l, [(8, "----a", self._filename("2"))])
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def test_unlink(self):
fatfs.mkdir(f"/{self._dirname()}")
with fatfs.open(f"/{self._filename()}", "w") as f:
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f.write(bytearray(b"test"))
s = fatfs.stat(f"/{self._dirname()}")
self.assertEqual(s, (0, "---d-", self._dirname()))
s = fatfs.stat(f"/{self._filename()}")
self.assertEqual(s, (4, "----a", self._filename()))
fatfs.unlink(f"/{self._dirname()}")
fatfs.unlink(f"/{self._filename()}")
with self.assertRaises(fatfs.FatFSError):
fatfs.stat(f"/{self._dirname()}")
with self.assertRaises(fatfs.FatFSError):
self.assertRaises(fatfs.stat(f"/{self._filename()}"))
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def test_rename(self):
fatfs.mkdir(f"/{self._dirname()}")
with fatfs.open(f"/{self._filename()}", "w") as f:
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f.write(bytearray(b"test"))
s = fatfs.stat(f"/{self._dirname()}")
self.assertEqual(s, (0, "---d-", self._dirname()))
s = fatfs.stat(f"/{self._filename()}")
self.assertEqual(s, (4, "----a", self._filename()))
fatfs.rename(f"/{self._dirname()}", f"/{self._dirname('2')}")
fatfs.rename(f"/{self._filename()}", f"/{self._filename('2')}")
with self.assertRaises(fatfs.FatFSError):
fatfs.stat(f"/{self._dirname()}")
with self.assertRaises(fatfs.FatFSError):
self.assertRaises(fatfs.stat(f"/{self._filename()}"))
s = fatfs.stat(f"/{self._dirname('2')}")
self.assertEqual(s, (0, "---d-", self._dirname("2")))
s = fatfs.stat(f"/{self._filename('2')}")
self.assertEqual(s, (4, "----a", self._filename("2")))
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def test_open_rw(self):
with fatfs.open(f"/{self._filename()}", "w") as f:
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f.write(bytearray(b"test"))
with fatfs.open(f"/{self._filename()}", "r") as f:
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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(f"/{self._filename()}", "w") as f:
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f.write(bytearray(b"test" * 200))
with fatfs.open(f"{self._filename()}", "a") as f:
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f.seek(800)
f.write(bytearray(b"TEST" * 200))
with fatfs.open(f"/{self._filename()}", "r") as f:
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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(f"/{self._filename()}", "w+") as f:
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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(f"/{self._filename()}", "w") as f:
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f.write(bytearray(b"test" * 100))
s = fatfs.stat(f"/{self._filename()}")
self.assertEqual(s, (400, "----a", self._filename()))
with fatfs.open(f"/{self._filename()}", "a") as f:
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f.seek(111)
f.truncate()
s = fatfs.stat(f"/{self._filename()}")
self.assertEqual(s, (111, "----a", self._filename()))
class TestTrezorIoFatfsLfn(TestTrezorIoFatfs):
def _filename(self, suffix=""):
return f"reallylongfilename{suffix}.textfile"
def _dirname(self, suffix=""):
return f"reallylongdirname{suffix}"
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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())
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if __name__ == "__main__":
unittest.main()