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https://github.com/licsber/micropython.git
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5ef0d2ab14
This conditional import was only used to get the tests working on the unix coverage build, which has now switched to use VFS by default so the uos module alone has the required functionality.
138 lines
3.1 KiB
Python
138 lines
3.1 KiB
Python
try:
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import uerrno
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import uos
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except ImportError:
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print("SKIP")
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raise SystemExit
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try:
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uos.VfsFat
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except AttributeError:
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print("SKIP")
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raise SystemExit
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class RAMFS:
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SEC_SIZE = 512
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def __init__(self, blocks):
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self.data = bytearray(blocks * self.SEC_SIZE)
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def readblocks(self, n, buf):
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#print("readblocks(%s, %x(%d))" % (n, id(buf), len(buf)))
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for i in range(len(buf)):
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buf[i] = self.data[n * self.SEC_SIZE + i]
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def writeblocks(self, n, buf):
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#print("writeblocks(%s, %x)" % (n, id(buf)))
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for i in range(len(buf)):
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self.data[n * self.SEC_SIZE + i] = buf[i]
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def ioctl(self, op, arg):
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#print("ioctl(%d, %r)" % (op, arg))
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if op == 4: # BP_IOCTL_SEC_COUNT
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return len(self.data) // self.SEC_SIZE
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if op == 5: # BP_IOCTL_SEC_SIZE
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return self.SEC_SIZE
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try:
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bdev = RAMFS(50)
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except MemoryError:
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print("SKIP")
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raise SystemExit
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uos.VfsFat.mkfs(bdev)
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vfs = uos.VfsFat(bdev)
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uos.mount(vfs, '/ramdisk')
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uos.chdir('/ramdisk')
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# file IO
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f = open("foo_file.txt", "w")
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print(str(f)[:17], str(f)[-1:])
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f.write("hello!")
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f.flush()
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f.close()
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f.close() # allowed
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try:
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f.write("world!")
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except OSError as e:
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print(e.args[0] == uerrno.EINVAL)
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try:
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f.read()
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except OSError as e:
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print(e.args[0] == uerrno.EINVAL)
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try:
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f.flush()
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except OSError as e:
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print(e.args[0] == uerrno.EINVAL)
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try:
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open("foo_file.txt", "x")
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except OSError as e:
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print(e.args[0] == uerrno.EEXIST)
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with open("foo_file.txt", "a") as f:
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f.write("world!")
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with open("foo_file.txt") as f2:
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print(f2.read())
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print(f2.tell())
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f2.seek(0, 0) # SEEK_SET
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print(f2.read(1))
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f2.seek(0, 1) # SEEK_CUR
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print(f2.read(1))
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f2.seek(2, 1) # SEEK_CUR
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print(f2.read(1))
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f2.seek(-2, 2) # SEEK_END
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print(f2.read(1))
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# using constructor of FileIO type to open a file
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# no longer working with new VFS sub-system
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#FileIO = type(f)
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#with FileIO("/ramdisk/foo_file.txt") as f:
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# print(f.read())
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# dirs
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vfs.mkdir("foo_dir")
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try:
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vfs.rmdir("foo_file.txt")
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except OSError as e:
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print(e.args[0] == 20) # uerrno.ENOTDIR
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vfs.remove("foo_file.txt")
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print(list(vfs.ilistdir()))
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# Here we test that opening a file with the heap locked fails correctly. This
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# is a special case because file objects use a finaliser and allocating with a
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# finaliser is a different path to normal allocation. It would be better to
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# test this in the core tests but there are no core objects that use finaliser.
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import micropython
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micropython.heap_lock()
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try:
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vfs.open('x', 'r')
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except MemoryError:
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print('MemoryError')
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micropython.heap_unlock()
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# Here we test that the finaliser is actually called during a garbage collection.
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import gc
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N = 4
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for i in range(N):
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n = 'x%d' % i
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f = vfs.open(n, 'w')
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f.write(n)
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f = None # release f without closing
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[0, 1, 2, 3] # use up Python stack so f is really gone
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gc.collect() # should finalise all N files by closing them
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for i in range(N):
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with vfs.open('x%d' % i, 'r') as f:
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print(f.read())
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