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 __enter__(self) -> None:
try:
if self.counter <= 0:
self.counter = 0
sdcard.power_on()
if self.mounted:
fatfs.mount()
self.counter += 1
except Exception:
self._deinit_instance()
raise
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 OSError as e:
self.assertEqual(e.args[0], 19) # ENODEV
self.assertFalse(fatfs.is_mounted())
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())
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 setUp(self):
sdcard.power_on()
fatfs.mkfs()
fatfs.mount()