tests/extmod: Add tests for verifying FAT and littlefs mtime values.

Verifies mtime timestamps on files match the value returned by time.time().

Also update vfs_fat_ramdisk.py so it doesn't check FAT timestamp of the
root, because that may change across runs/ports.

Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George 2020-08-31 15:01:10 +10:00
parent a909c21587
commit 0e6ef40359
6 changed files with 88 additions and 3 deletions

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@ -0,0 +1,74 @@
# Test for VfsFat using a RAM device, mtime feature
try:
import utime, uos
utime.time
utime.sleep
uos.VfsFat
except (ImportError, AttributeError):
print("SKIP")
raise SystemExit
class RAMBlockDevice:
ERASE_BLOCK_SIZE = 512
def __init__(self, blocks):
self.data = bytearray(blocks * self.ERASE_BLOCK_SIZE)
def readblocks(self, block, buf):
addr = block * self.ERASE_BLOCK_SIZE
for i in range(len(buf)):
buf[i] = self.data[addr + i]
def writeblocks(self, block, buf):
addr = block * self.ERASE_BLOCK_SIZE
for i in range(len(buf)):
self.data[addr + i] = buf[i]
def ioctl(self, op, arg):
if op == 4: # block count
return len(self.data) // self.ERASE_BLOCK_SIZE
if op == 5: # block size
return self.ERASE_BLOCK_SIZE
def test(bdev, vfs_class):
print("test", vfs_class)
# Initial format of block device.
vfs_class.mkfs(bdev)
# construction
vfs = vfs_class(bdev)
# Create an empty file, should have a timestamp.
current_time = int(utime.time())
vfs.open("test1", "wt").close()
# Wait 2 seconds so mtime will increase (FAT has 2 second resolution).
utime.sleep(2)
# Create another empty file, should have a timestamp.
vfs.open("test2", "wt").close()
# Stat the files and check mtime is non-zero.
stat1 = vfs.stat("test1")
stat2 = vfs.stat("test2")
print(stat1[8] != 0, stat2[8] != 0)
# Check that test1 has mtime which matches time.time() at point of creation.
# TODO this currently fails on the unix port because FAT stores timestamps
# in localtime and stat() is UTC based.
# print(current_time - 1 <= stat1[8] <= current_time + 1)
# Check that test1 is older than test2.
print(stat1[8] < stat2[8])
# Unmount.
vfs.umount()
bdev = RAMBlockDevice(50)
test(bdev, uos.VfsFat)

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@ -0,0 +1,3 @@
test <class 'VfsFat'>
True True
True

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@ -63,7 +63,7 @@ with vfs.open("foo_file.txt", "w") as f:
f.write("hello!")
print(list(vfs.ilistdir()))
print("stat root:", vfs.stat("/"))
print("stat root:", vfs.stat("/")[:-3]) # timestamps differ across runs
print("stat file:", vfs.stat("foo_file.txt")[:-3]) # timestamps differ across runs
print(b"FOO_FILETXT" in bdev.data)

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@ -4,7 +4,7 @@ statvfs: (512, 512, 16, 16, 16, 0, 0, 0, 0, 255)
getcwd: /
True
[('foo_file.txt', 32768, 0, 6)]
stat root: (16384, 0, 0, 0, 0, 0, 0, 0, 0, 0)
stat root: (16384, 0, 0, 0, 0, 0, 0)
stat file: (32768, 0, 0, 0, 0, 0, 6)
True
True

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@ -3,6 +3,7 @@
try:
import utime, uos
utime.time
utime.sleep
uos.VfsLfs2
except (ImportError, AttributeError):
@ -46,6 +47,7 @@ def test(bdev, vfs_class):
vfs = vfs_class(bdev, mtime=True)
# Create an empty file, should have a timestamp.
current_time = int(utime.time())
vfs.open("test1", "wt").close()
# Wait 1 second so mtime will increase by at least 1.
@ -54,10 +56,15 @@ def test(bdev, vfs_class):
# Create another empty file, should have a timestamp.
vfs.open("test2", "wt").close()
# Stat the files and check that test1 is older than test2.
# Stat the files and check mtime is non-zero.
stat1 = vfs.stat("test1")
stat2 = vfs.stat("test2")
print(stat1[8] != 0, stat2[8] != 0)
# Check that test1 has mtime which matches time.time() at point of creation.
print(current_time <= stat1[8] <= current_time + 1)
# Check that test1 is older than test2.
print(stat1[8] < stat2[8])
# Wait 1 second so mtime will increase by at least 1.

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@ -4,6 +4,7 @@ True True
True
True
True
True
mtime=False
True
True