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# Test that errno's propagate correctly through btree module.
try:
import btree, io, errno
io.IOBase
except (ImportError, AttributeError):
print("SKIP")
raise SystemExit
class Device(io.IOBase):
def __init__(self, read_ret=0, ioctl_ret=0):
self.read_ret = read_ret
self.ioctl_ret = ioctl_ret
def readinto(self, buf):
print("read", len(buf))
return self.read_ret
def ioctl(self, cmd, arg):
print("ioctl", cmd)
return self.ioctl_ret
# Invalid pagesize; errno comes from btree library
try:
import btree, io, errno
db = btree.open(Device(), pagesize=511)
except OSError as er:
print("OSError", er.errno == errno.EINVAL)
# Valid pagesize, device returns error on read; errno comes from Device.readinto
try:
import btree, io, errno
db = btree.open(Device(-1000), pagesize=512)
except OSError as er:
print(repr(er))
# Valid pagesize, device returns error on seek; errno comes from Device.ioctl
try:
import btree, io, errno
db = btree.open(Device(0, -1001), pagesize=512)
except OSError as er:
print(repr(er))
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