def test_update_and_read(self):
with temporaryPath() as srcPath, \
directio.DirectFile(srcPath, "w") as f:
f.write(self.DATA[:BLOCK_SIZE])
with directio.DirectFile(srcPath, "r+") as f:
f.seek(BLOCK_SIZE)
f.write(self.DATA[BLOCK_SIZE:])
with io.open(srcPath, "rb") as f:
self.assertEquals(f.read(), self.DATA)
def test_small_writes(self):
with temporaryPath() as srcPath, \
directio.DirectFile(srcPath, "w") as f:
f.write(self.DATA[:BLOCK_SIZE])
f.write(self.DATA[BLOCK_SIZE:])
with io.open(srcPath, "rb") as f:
self.assertEquals(f.read(), self.DATA)
def _putMetadata(cls, metaId, meta):
vgname, offs = metaId
data = cls.formatMetadata(meta)
data += "\0" * (sc.METADATA_SIZE - len(data))
metavol = lvm.lvPath(vgname, sd.METADATA)
with directio.DirectFile(metavol, "r+") as f:
f.seek(offs * sc.METADATA_SIZE)
f.write(data)
def _putMetadata(cls, metaId, meta):
vgname, offs = metaId
data = cls.formatMetadata(meta)
data += "\0" * (sc.METADATA_SIZE - len(data))
sd = sdCache.produce_manifest(vgname)
metavol = sd.metadata_volume_path()
with directio.DirectFile(metavol, "r+") as f:
f.seek(offs * sc.METADATA_SIZE)
f.write(data)
def test_read_all(self):
with temporaryPath(data=self.DATA) as srcPath, \
directio.DirectFile(srcPath, "r") as direct_file, \
io.open(srcPath, "rb") as buffered_file:
self.assertEquals(direct_file.read(), buffered_file.read())
def test_write_unaligned(self):
with temporaryPath(data=self.DATA) as srcPath, \
directio.DirectFile(srcPath, "r+") as f:
self.assertRaises(ValueError, f.write, "x" * 511)
with io.open(srcPath, "rb") as f:
self.assertEqual(f.read(), self.DATA)
def test_write(self):
with temporaryPath() as srcPath, \
directio.DirectFile(srcPath, "w") as f:
f.write(self.DATA)
with io.open(srcPath, "rb") as f:
self.assertEquals(f.read(), self.DATA)
def test_seek_and_read(self, offset):
with temporaryPath(data=self.DATA) as srcPath, \
directio.DirectFile(srcPath, "r") as f:
f.seek(offset)
self.assertEquals(f.read(), self.DATA[offset:])
def test_read(self, size):
with temporaryPath(data=self.DATA) as srcPath, \
directio.DirectFile(srcPath, "r") as f:
self.assertEquals(f.read(size), self.DATA[:size])
