def format(self, name):
thisDrive = Drive(name)
thisDrive.format()
thisDrive.write_block(0, "+" + "-" * 127 + ("f:" + " " * 9 + "0000:" + "000 " * 12) * 6)
global availableBlocksList
availableBlocksList = ['+'] + ['-' for x in range(127)]
global availableBlockIndices
availableBlockIndices = list(range(1, 128))
self.currentDrive = thisDrive
self.rootDirectory = Directory(self.currentDrive, None, 0, None, None) #drive, fileNum, parentBlockNum, parent, name
self.blocksAvailability = thisDrive.read_block(0)[:127]
def test_long_volume_name(self):
blocks = 100
drive_name = 'driveH.txt'
disk = Drive.format(drive_name, blocks)
name = b'long volume name' * 100
volume = Volume.format(disk, name)
self.assertEqual(name, volume.name())
self.assertEqual(blocks, volume.size())
self.assertEqual(99, volume.root_index())
volume.unmount()
def test_long_volume_name(self):
blocks = 10
drive_name = 'driveB.txt'
drive = Drive.format(drive_name, blocks)
name = b'long volume name' * 10
volume = Volume.format(drive, name)
self.assertEqual(3, volume.volume_data_blocks())
self.assertEqual(name, volume.name())
self.assertEqual(blocks, volume.size())
self.assertEqual(b'xxx------x', volume.bitmap())
self.assertEqual(9, volume.root_index())
volume.unmount()
def test_file_reads(self):
volume = Volume.format(Drive.format('driveE.txt', 8), b'file read volume')
file = volume.open(b'fileA')
data = b'A different fileA'
file.write(0, data)
with self.assertRaises(IOError):
file.read(30, 1)
with self.assertRaises(IOError):
file.read(0, 50)
self.assertEqual(data, file.read(0, len(data)))
self.assertEqual(b'if', file.read(3, 2))
file.write(file.size(), b'Aaargh' * 10)
self.assertEqual(b'arghAaarghAaargh', file.read(61, 16))
volume.unmount()
def test_file_reads(self):
volume = Volume.format(Drive.format("driveK.txt", 100), b'file read volume')
file = volume.open(b'fileA')
data = b'A different fileA' * 10
file.write(0, data)
with self.assertRaises(IOError):
file.read(300, 1)
with self.assertRaises(IOError):
file.read(0, 500)
self.assertEqual(data, file.read(0, len(data)))
self.assertEqual(b'if', file.read(71, 2))
file.write(file.size(), b'Aaargh' * 100)
self.assertEqual(b'AaarghAaargh', file.read(500, 12))
volume.unmount()
def test_reconnect_drive_with_files(self):
drive_name = 'driveF.txt'
volume = Volume.format(Drive.format(drive_name, 12), b'reconnect with files volume')
filenames = [b'file1', b'file2', b'file3', b'file4']
files = [volume.open(name) for name in filenames]
for i, file in enumerate(files):
file.write(0, bytes(str(i).encode()) * 64)
files[0].write(files[0].size(), b'a')
volume.unmount()
volume = Volume.mount(drive_name)
file4 = volume.open(b'file4')
self.assertEqual(b'3333', file4.read(0, 4))
file1 = volume.open(b'file1')
self.assertEqual(65, file1.size())
self.assertEqual(b'0a', file1.read(63, 2))
volume.unmount()
def test_simple_file_creation(self):
# the Volume didn't call format in the original
volume = Volume.format(Drive.format('driveD.txt', 8), b'file creation volume')
with self.assertRaises(ValueError):
volume.open(b'fileA\n')
file = volume.open(b'fileA')
self.assertEqual(0, file.size())
data = b'Hello from fileA'
file.write(0, data)
self.assertEqual(len(data), file.size())
file.write(file.size(), data)
self.assertEqual(2 * len(data), file.size())
file = volume.open(b'fileB')
data = b'Welcome to fileB'
file.write(50, data)
self.assertEqual(50 + len(data), file.size())
volume.unmount()
def test_new_volume(self):
blocks = 10
drive_name = 'driveA.txt'
drive = Drive.format(drive_name, blocks)
with self.assertRaises(ValueError):
Volume.format(drive, b'')
with self.assertRaises(ValueError):
Volume.format(drive, b'Volume\nA')
with self.assertRaises(ValueError):
Volume.format(drive, b'a' * blocks * Drive.BLK_SIZE)
name = b'new volume test'
volume = Volume.format(drive, name)
self.assertEqual(1, volume.volume_data_blocks())
self.assertEqual(name, volume.name())
self.assertEqual(blocks, volume.size())
self.assertEqual(b'x--------x', volume.bitmap())
self.assertEqual(9, volume.root_index())
volume.unmount()
def test_simple_file_creation(self):
volume = Volume.format(Drive.format('driveJ.txt', 100), b'file creation volume')
with self.assertRaises(ValueError):
volume.open(b'dir/fileA') # incase we ever implement subdirectories
with self.assertRaises(ValueError):
volume.open(b'fileA\n')
file = volume.open(b'fileA')
self.assertEqual(0, file.size())
data = b'Hello from fileA' * 10
file.write(0, data)
self.assertEqual(len(data), file.size())
file.write(file.size(), data)
self.assertEqual(2 * len(data), file.size())
file = volume.open(b'fileB')
data = b'Welcome to fileB'
file.write(500, data)
self.assertEqual(500 + len(data), file.size())
volume.unmount()
def test_reconnect_disk_with_files(self):
drive_name = 'driveL.txt'
volume = Volume.format(Drive.format(drive_name, 500), b'reconnect with files volume')
files = []
for i in range(100):
name = 'file{:02}'.format(i).encode()
files.append(volume.open(name))
for i,file in enumerate(files):
file.write(0, str(i).encode() * 64)
files[99].write(files[99].size(), b'a')
volume.unmount()
volume = None
volume = Volume.mount(drive_name)
file4 = volume.open(b'file04')
self.assertEqual(b'4444', file4.read(0, 4))
file99 = volume.open(b'file99')
self.assertEqual(129, file99.size())
self.assertEqual(b'9a', file99.read(file99.size() - 2, 2))
volume.unmount()
def test_reconnect_drive(self):
blocks = 10
drive_name = 'driveC.txt'
drive = Drive.format(drive_name, blocks)
drive.disconnect()
with self.assertRaises(IOError):
Drive.reconnect('badname')
drive = Drive.reconnect(drive_name)
self.assertEqual(blocks * Drive.BLK_SIZE, drive.num_bytes())
name = b'reconnect volume'
volume = Volume.format(drive, name)
volume.unmount()
with self.assertRaises(IOError):
Volume.mount('driveZ')
volume = Volume.mount(drive_name)
self.assertEqual(1, volume.volume_data_blocks())
self.assertEqual(name, volume.name())
self.assertEqual(blocks, volume.size())
self.assertEqual(b'x--------x', volume.bitmap())
self.assertEqual(9, volume.root_index())
volume.unmount()
