feat(py3): Convert unicode-only modules to str

Modules that reference `unicode` but do *not* reference `str` can safely be converted to
use `str` in a way that's closest to the way it should be done under Python 3 but that
is still Python 2 compatible [per
`python-future`](https://python-future.org/compatible_idioms.html?highlight=unicode#unicode).

This change results in 4 additional tests passing under Python 3 that weren't before,
one previous test error is now a failure, and more coverage in a few modules.  Here's
the diff of the output from running all tests under Python 3 before these changes and
after.  I've elided the irrelevant changes (time stamps, object ids, etc.):

```diff
--- .tox/make-test-py3-all-old.log	2020-09-27 20:56:55.761691130 -0700
+++ .tox/make-test-py3-all-new.log	2020-09-27 20:58:16.242075678 -0700
@@ -1,6 +1,6 @@
...
@@ -4218,7 +4218,7 @@
 [ERROR]
 (#.### secs)
 allmydata.test.mutable.test_version.Version.test_download_version ... Traceback (most recent call last):
-  File "/home/rpatterson/src/work/sfu/tahoe-lafs/src/allmydata/test/mutable/test_version.py", line 274, in test_download_version
+  File "/home/rpatterson/src/work/sfu/tahoe-lafs/src/allmydata/test/mutable/test_version.py", line 279, in test_download_version
     d = self.publish_multiple()
   File "/home/rpatterson/src/work/sfu/tahoe-lafs/src/allmydata/test/mutable/util.py", line 372, in publish_multiple
     self._nodemaker = make_nodemaker(self._storage)
@@ -4438,40 +4438,26 @@
 allmydata.test.test_abbreviate.Abbreviate.test_time ... [OK]
 (#.### secs)
 allmydata.test.test_auth.AccountFileCheckerKeyTests.test_authenticated ... Traceback (most recent call last):
-  File "/home/rpatterson/src/work/sfu/tahoe-lafs/src/allmydata/test/test_auth.py", line 42, in setUp
-    abspath = abspath_expanduser_unicode(unicode(self.account_file.path))
-builtins.NameError: name 'unicode' is not defined
+Failure: twisted.cred.error.UnauthorizedLogin:
 [ERROR]
 (#.### secs)
 allmydata.test.test_auth.AccountFileCheckerKeyTests.test_missing_signature ... Traceback (most recent call last):
-  File "/home/rpatterson/src/work/sfu/tahoe-lafs/src/allmydata/test/test_auth.py", line 42, in setUp
-    abspath = abspath_expanduser_unicode(unicode(self.account_file.path))
-builtins.NameError: name 'unicode' is not defined
-[ERROR]
+  File "/home/rpatterson/src/work/sfu/tahoe-lafs/.tox/py36-coverage/lib/python3.6/site-packages/twisted/trial/_asynctest.py", line 75, in _eb
+    raise self.failureException(output)
+twisted.trial.unittest.FailTest:
+Expected: (<class 'twisted.conch.error.ValidPublicKey'>,)
+Got:
+[Failure instance: Traceback (failure with no frames): <class 'twisted.cred.error.UnauthorizedLogin'>:
+]
+[FAILURE]
 (#.### secs)
-allmydata.test.test_auth.AccountFileCheckerKeyTests.test_password_auth_user ... Traceback (most recent call last):
-  File "/home/rpatterson/src/work/sfu/tahoe-lafs/src/allmydata/test/test_auth.py", line 42, in setUp
-    abspath = abspath_expanduser_unicode(unicode(self.account_file.path))
-builtins.NameError: name 'unicode' is not defined
-[ERROR]
+allmydata.test.test_auth.AccountFileCheckerKeyTests.test_password_auth_user ... [OK]
 (#.### secs)
-allmydata.test.test_auth.AccountFileCheckerKeyTests.test_unknown_user ... Traceback (most recent call last):
-  File "/home/rpatterson/src/work/sfu/tahoe-lafs/src/allmydata/test/test_auth.py", line 42, in setUp
-    abspath = abspath_expanduser_unicode(unicode(self.account_file.path))
-builtins.NameError: name 'unicode' is not defined
-[ERROR]
+allmydata.test.test_auth.AccountFileCheckerKeyTests.test_unknown_user ... [OK]
 (#.### secs)
-allmydata.test.test_auth.AccountFileCheckerKeyTests.test_unrecognized_key ... Traceback (most recent call last):
-  File "/home/rpatterson/src/work/sfu/tahoe-lafs/src/allmydata/test/test_auth.py", line 42, in setUp
-    abspath = abspath_expanduser_unicode(unicode(self.account_file.path))
-builtins.NameError: name 'unicode' is not defined
-[ERROR]
+allmydata.test.test_auth.AccountFileCheckerKeyTests.test_unrecognized_key ... [OK]
 (#.### secs)
-allmydata.test.test_auth.AccountFileCheckerKeyTests.test_wrong_signature ... Traceback (most recent call last):
-  File "/home/rpatterson/src/work/sfu/tahoe-lafs/src/allmydata/test/test_auth.py", line 42, in setUp
-    abspath = abspath_expanduser_unicode(unicode(self.account_file.path))
-builtins.NameError: name 'unicode' is not defined
-[ERROR]
+allmydata.test.test_auth.AccountFileCheckerKeyTests.test_wrong_signature ... [OK]
 (#.### secs)
 allmydata.test.test_backupdb.BackupDB.test_basic ... [OK]
 (#.### secs)
@@ -4615,7 +4601,7 @@
 src/allmydata/crypto/util.py                            12      2      4      2    75%   13, 32, 12->13, 30->32
 src/allmydata/deep_stats.py                             83     63     26      0    18%   27-52, 56-58, 62-82, 86-91, 94, 97, 103-114, 117-121, 125-131, 135
 src/allmydata/dirnode.py                               525    420    178      0    15%   70-103, 112-116, 119-135, 140-143, 146-160, 165-173, 176-177, 180-205, 208-217, 223-229, 248-286, 293-299, 302, 310, 315, 318-324, 327-332, 336-340, 344-346, 355-406, 410, 413, 416, 419, 422, 425, 428, 431-433, 436, 439, 442, 445, 448-450, 453, 457, 459, 464, 469-472, 475-478, 481-484, 489-492, 498-501, 504-507, 510-518, 530-532, 539-555, 558-566, 570-589, 600-610, 613-620, 628-641, 646-652, 657-678, 693-714, 752-761, 765-770, 774-812, 819-820, 825, 828, 831, 836-839, 842-849, 852-853, 862-877, 880-881, 884-891, 894, 897-899
-src/allmydata/frontends/auth.py                        100     71     28      0    26%   21-22, 30-48, 51, 54-56, 59-70, 80-87, 100-110, 117-118, 121, 124-142, 147-150, 156-159
+src/allmydata/frontends/auth.py                        100     52     28      4    47%   21-22, 38, 41-44, 51, 54-56, 65-70, 80-87, 106-108, 117-118, 121, 124-142, 147-150, 156-159, 37->38, 40->41, 59->65, 101->106
 src/allmydata/frontends/ftpd.py                        255    254     84      0     1%   4-337
 src/allmydata/frontends/sftpd.py                      1211   1208    488      0     1%   4-2014
 src/allmydata/hashtree.py                              174    135     72      1    16%   59, 75-78, 106-108, 114-117, 123-126, 132-136, 142-149, 152-162, 165-169, 172, 175, 180, 183, 186, 218-232, 259-262, 295-306, 320-323, 326-331, 384-484, 58->59
@@ -4653,7 +4639,7 @@
 src/allmydata/scripts/admin.py                          51     31      2      0    38%   9-14, 17-21, 25, 28, 31-37, 40-46, 56-57, 59, 61-66, 74-78
 src/allmydata/scripts/backupdb.py                      146     91     14      1    36%   84-91, 94-96, 99, 103, 106, 111-114, 117-119, 122, 125, 128, 176-221, 231-242, 245-263, 266-272, 308-324, 327-333, 336-341, 306->308
 src/allmydata/scripts/cli.py                           259    124     46      6    46%   25-49, 69-72, 79-81, 103, 142-146, 175, 221-222, 258, 265-266, 284-285, 330-331, 338-341, 346-355, 361-362, 366-373, 388, 405, 417, 432, 449, 479-481, 484-486, 489-491, 494-496, 499-501, 504-515, 518-520, 523-525, 528-530, 533, 536-538, 541-543, 546-548, 551-553, 556-558, 561-563, 566-568, 571-573, 576-577, 60->exit, 61->exit, 174->175, 180->exit, 181->exit, 219->221
-src/allmydata/scripts/common.py                        153     74     60      4    48%   64, 82, 88, 100, 114-126, 130-152, 159-163, 168-169, 172, 177, 191-236, 240-241, 47->49, 63->64, 79->82, 87->88
+src/allmydata/scripts/common.py                        154     74     60      4    49%   69, 87, 93, 105, 119-131, 135-157, 164-168, 173-174, 177, 182, 196-241, 245-246, 52->54, 68->69, 84->87, 92->93
 src/allmydata/scripts/common_http.py                    77     58     20      0    20%   15-30, 34-36, 38, 42-83, 87, 90, 94-96, 101
 src/allmydata/scripts/create_node.py                   302    185    114      8    30%   24, 61-96, 99-111, 114-128, 136-139, 169-174, 191-194, 205-208, 224-229, 235, 242, 256-278, 289-292, 295-298, 329, 339, 347-380, 385-445, 448-450, 455-477, 223->224, 234->235, 241->242, 252->256, 288->289, 294->295, 328->329, 338->339
 src/allmydata/scripts/debug.py                         719    638    202      0     9%   14, 31-32, 35-49, 52-60, 63-142, 146-154, 157-164, 168-217, 220-304, 307-401, 407, 417, 437-465, 468-485, 488-602, 606, 609-611, 637-648, 653-656, 659, 683-689, 692-810, 813-842, 845-848, 851-865, 869, 888, 891-940, 946, 949-950, 957, 960-961, 967-972, 984-985, 999-1000, 1003-1004, 1020-1021, 1025-1031, 1046-1050
@@ -4661,10 +4647,10 @@
 src/allmydata/scripts/run_common.py                    135     18     24      6    85%   37, 41-46, 59-60, 149, 158, 192-193, 216-220, 226-227, 55->62, 135->exit, 135->exit, 148->149, 191->192, 225->226
 src/allmydata/scripts/runner.py                        138     53     42     11    56%   84-85, 91, 97-99, 104, 114, 123-132, 140, 146, 149-160, 174-181, 186, 189-190, 204-232, 248, 255, 31->36, 103->104, 113->114, 139->140, 145->146, 147->149, 185->186, 188->189, 202->204, 247->248, 254->255
 src/allmydata/scripts/slow_operation.py                 69     56     22      0    14%   15-44, 47-52, 55-61, 64-83
-src/allmydata/scripts/stats_gatherer.py                 41     25     10      0    31%   20-25, 62-86
+src/allmydata/scripts/stats_gatherer.py                 42     25     10      0    33%   25-30, 67-91
 src/allmydata/scripts/tahoe_add_alias.py               106     91     30      0    11%   20-32, 35-59, 63-98, 102-111, 115-144
 src/allmydata/scripts/tahoe_backup.py                  331    267     85      0    15%   20-35, 38-51, 54-58, 71-73, 76-152, 155-157, 160-161, 164-174, 178-209, 212-242, 246-274, 278-279, 287-311, 322-331, 336, 339, 342-351, 356, 359, 362-367, 372-374, 379, 384, 389, 398, 417-425, 428, 431-461, 469-480, 483-486, 500-504, 511-512, 525, 538-542, 545-549, 552-555, 558-561, 564, 571, 578, 586-594
-src/allmydata/scripts/tahoe_check.py                   263    235    121      0     7%   15, 20-100, 103-112, 120-129, 132-167, 170-173, 179-192, 195-256, 259-270, 277-323, 327-336, 339
+src/allmydata/scripts/tahoe_check.py                   264    235    121      0     8%   20, 25-105, 108-117, 125-134, 137-172, 175-178, 184-197, 200-261, 264-275, 282-328, 332-341, 344
 src/allmydata/scripts/tahoe_cp.py                      602    503    226      0    12%   22, 26, 30-31, 34-37, 40-41, 44-47, 50-53, 56-60, 63-70, 75-77, 80, 83, 86, 90-91, 94, 98-99, 102, 106-111, 114, 117-134, 138-142, 145-159, 162-172, 175-177, 180, 185-189, 192, 195-197, 200-203, 206, 210-214, 218-223, 230-233, 236, 239-253, 256-263, 266-297, 303, 307-309, 316, 320-323, 326-333, 336-350, 354-358, 361-397, 403-413, 416-433, 436-437, 440-454, 465-496, 504-580, 583, 589-630, 636-689, 693-698, 701-703, 706-719, 723-762, 765-775, 778-806, 810-818, 821-838, 842, 845-857, 862-863, 867
 src/allmydata/scripts/tahoe_get.py                      37     32     12      0    10%   9-45
 src/allmydata/scripts/tahoe_invite.py                   59     41      8      0    27%   27-31, 36-71, 76-101
@@ -4679,7 +4665,7 @@
 src/allmydata/scripts/tahoe_stop.py                     60     47     10      0    19%   16, 24-84
 src/allmydata/scripts/tahoe_unlink.py                   28     23      6      0    15%   12-40
 src/allmydata/scripts/tahoe_webopen.py                  27     24     12      0     8%   7-31
-src/allmydata/stats.py                                 242    156     54      3    33%   28-34, 37-40, 43-47, 50-64, 67-72, 101, 104-110, 113-125, 144-146, 154-155, 160-163, 169-174, 178-187, 191, 200-207, 210, 213-219, 222-228, 232-234, 237, 241, 246-250, 253, 256-257, 263-278, 281-285, 288-293, 299-325, 100->101, 143->144, 153->154
+src/allmydata/stats.py                                 242    156     54      3    33%   29-35, 38-41, 44-48, 51-65, 68-73, 102, 105-111, 114-126, 145-147, 155-156, 161-164, 170-175, 179-188, 192, 201-208, 211, 214-220, 223-229, 233-235, 238, 242, 247-251, 254, 257-258, 264-279, 282-286, 289-294, 300-326, 101->102, 144->145, 154->155
 src/allmydata/storage/common.py                         24      2      4      2    86%   11, 28, 10->11, 36->39
 src/allmydata/storage/crawler.py                       222    125     64      6    37%   16, 90, 111-113, 148-178, 192-193, 231, 244, 251, 275-312, 315-363, 377-384, 393, 416, 428, 445, 453, 488-492, 495-508, 13->16, 89->90, 96->99, 228->231, 248->251, 268->271
 src/allmydata/storage/expirer.py                       240    183     81      2    21%   9, 74-79, 119, 122, 125-167, 171-233, 236-253, 256-261, 264-266, 269-274, 280-284, 288-322, 388-435, 7->9, 71->74
@@ -4748,7 +4734,7 @@
 src/allmydata/windows/fixups.py                        133    133     54      0     0%   1-237
 src/allmydata/windows/registry.py                       42     42     12      0     0%   1-77
 ------------------------------------------------------------------------------------------------
-TOTAL                                                27427  20411   8234    294    22%
+TOTAL                                                27430  20392   8234    298    22%

 18 files skipped due to complete coverage.
 + '[' '!' -z 1 ']'
```

Trac: refs #3448, https://tahoe-lafs.org/trac/tahoe-lafs/ticket/3448
This commit is contained in:
Ross Patterson 2020-09-27 13:00:19 -07:00
parent 8f7cafc877
commit 362c121426
12 changed files with 76 additions and 21 deletions

View File

@ -257,3 +257,9 @@ $(foreach side,old new,.tox/make-test-py3-all-$(side).log):
sed -E 's/\([0-9]+\.[0-9]{3} secs\)/(#.### secs)/' | tee "$(@)"
.tox/make-test-py3-all.diff: .tox/make-test-py3-all-new.log
(diff -u "$(<:%-new.log=%-old.log)" "$(<)" || true) | tee "$(@)"
# Locate modules that are candidates for naively converting `unicode` -> `str`.
# List all Python source files that reference `unicode` but don't reference `str`
.tox/py3-unicode-no-str.ls:
find src -type f -iname '*.py' -exec grep -l -E '\Wunicode\W' '{}' ';' | \
xargs grep -L '\Wstr\W' | xargs ls -ld | tee "$(@)"

1
newsfragments/3448.minor Normal file
View File

@ -0,0 +1 @@
Convert modules that only reference `unicode` to use `str`.

View File

@ -2,9 +2,14 @@ from __future__ import print_function
import os, sys, urllib, textwrap
import codecs
from six.moves.configparser import NoSectionError
from os.path import join
# BBB: Python 2 compatibility
from builtins import str
from six.moves.configparser import NoSectionError
from twisted.python import usage
from allmydata.util.assertutil import precondition
from allmydata.util.encodingutil import unicode_to_url, quote_output, \
quote_local_unicode_path, argv_to_abspath
@ -188,7 +193,7 @@ def get_alias(aliases, path_unicode, default):
and default is not found in aliases, an UnknownAliasError is
raised.
"""
precondition(isinstance(path_unicode, unicode), path_unicode)
precondition(isinstance(path_unicode, str), path_unicode)
from allmydata import uri
path = path_unicode.encode('utf-8').strip(" ")

View File

@ -1,7 +1,12 @@
from __future__ import print_function
import os
# BBB: Python 2 compatibility
from builtins import str
from twisted.python import usage
from allmydata.scripts.common import NoDefaultBasedirOptions
from allmydata.scripts.create_node import write_tac
from allmydata.util.assertutil import precondition
@ -62,7 +67,7 @@ def create_stats_gatherer(config):
err = config.stderr
basedir = config['basedir']
# This should always be called with an absolute Unicode basedir.
precondition(isinstance(basedir, unicode), basedir)
precondition(isinstance(basedir, str), basedir)
if os.path.exists(basedir):
if listdir_unicode(basedir):

View File

@ -2,7 +2,12 @@ from __future__ import print_function
import urllib
import json
# BBB: Python 2 compatibility
from builtins import str
from twisted.protocols.basic import LineOnlyReceiver
from allmydata.scripts.common import get_alias, DEFAULT_ALIAS, escape_path, \
UnknownAliasError
from allmydata.scripts.common_http import do_http, format_http_error
@ -101,7 +106,7 @@ def check_location(options, where):
def check(options):
if len(options.locations) == 0:
errno = check_location(options, unicode())
errno = check_location(options, str())
if errno != 0:
return errno
return 0
@ -325,7 +330,7 @@ class DeepCheckStreamer(LineOnlyReceiver, object):
def run(self, options):
if len(options.locations) == 0:
errno = self.deepcheck_location(options, unicode())
errno = self.deepcheck_location(options, str())
if errno != 0:
return errno
return 0

View File

@ -1,13 +1,14 @@
from __future__ import print_function
from past.builtins import unicode
import json
import os
import pprint
import time
from collections import deque
# BBB: Python 2 compatibility
from builtins import str
from twisted.internet import reactor
from twisted.application import service
from twisted.application.internet import TimerService
@ -157,7 +158,7 @@ class StatsProvider(Referenceable, service.MultiService):
service.MultiService.startService(self)
def count(self, name, delta=1):
if isinstance(name, unicode):
if isinstance(name, str):
name = name.encode("utf-8")
val = self.counters.setdefault(name, 0)
self.counters[name] = val + delta
@ -178,7 +179,7 @@ class StatsProvider(Referenceable, service.MultiService):
def to_bytes(d):
result = {}
for (k, v) in d.items():
if isinstance(k, unicode):
if isinstance(k, str):
k = k.encode("utf-8")
result[k] = v
return result

View File

@ -37,6 +37,9 @@ a mean of 10kB and a max of 100MB, so filesize=min(int(1.0/random(.0002)),1e8)
import os, sys, httplib, binascii
import urllib, json, random, time, urlparse
# BBB: Python 2 compatibility
from builtins import str
if sys.argv[1] == "--stats":
statsfiles = sys.argv[2:]
# gather stats every 10 seconds, do a moving-window average of the last
@ -116,7 +119,7 @@ def listdir(nodeurl, root, remote_pathname):
assert nodetype == "dirnode"
global directories_read
directories_read += 1
children = dict( [(unicode(name),value)
children = dict( [(str(name),value)
for (name,value)
in d["children"].iteritems()] )
return children

View File

@ -1,18 +1,23 @@
from __future__ import print_function
import os, shutil, sys, urllib, time, stat, urlparse
# BBB: Python 2 compatibility
from builtins import str
from six.moves import cStringIO as StringIO
from twisted.internet import defer, reactor, protocol, error
from twisted.application import service, internet
from twisted.web import client as tw_client
from twisted.python import log, procutils
from foolscap.api import Tub, fireEventually, flushEventualQueue
from allmydata import client, introducer
from allmydata.immutable import upload
from allmydata.scripts import create_node
from allmydata.util import fileutil, pollmixin
from allmydata.util.fileutil import abspath_expanduser_unicode
from allmydata.util.encodingutil import get_filesystem_encoding
from foolscap.api import Tub, fireEventually, flushEventualQueue
from twisted.python import log, procutils
class StallableHTTPGetterDiscarder(tw_client.HTTPPageGetter, object):
full_speed_ahead = False
@ -69,7 +74,7 @@ class SystemFramework(pollmixin.PollMixin):
numnodes = 7
def __init__(self, basedir, mode):
self.basedir = basedir = abspath_expanduser_unicode(unicode(basedir))
self.basedir = basedir = abspath_expanduser_unicode(str(basedir))
if not (basedir + os.path.sep).startswith(abspath_expanduser_unicode(u".") + os.path.sep):
raise AssertionError("safety issue: basedir must be a subdir")
self.testdir = testdir = os.path.join(basedir, "test")

View File

@ -2,7 +2,10 @@
Tools aimed at the interaction between tests and Eliot.
"""
from past.builtins import unicode
# BBB: Python 2 compatibility
# Can't use `builtins.str` because it's not JSON encodable:
# `exceptions.TypeError: <class 'future.types.newstr.newstr'> is not JSON-encodeable`
from past.builtins import unicode as str
__all__ = [
"RUN_TEST",
@ -29,7 +32,7 @@ from twisted.internet.defer import (
_NAME = Field.for_types(
u"name",
[unicode],
[str],
u"The name of the test.",
)

View File

@ -1,9 +1,14 @@
from __future__ import print_function
import os
# BBB: Python 2 compatibility
from builtins import str
from six.moves import cStringIO as StringIO
from twisted.internet import defer
from twisted.trial import unittest
from allmydata import uri
from allmydata.interfaces import SDMF_VERSION, MDMF_VERSION
from allmydata.util import base32, consumer, mathutil
@ -75,7 +80,7 @@ class Version(GridTestMixin, unittest.TestCase, testutil.ShouldFailMixin, \
fso = debug.FindSharesOptions()
storage_index = base32.b2a(n.get_storage_index())
fso.si_s = storage_index
fso.nodedirs = [os.path.dirname(abspath_expanduser_unicode(unicode(storedir)))
fso.nodedirs = [os.path.dirname(abspath_expanduser_unicode(str(storedir)))
for (i,ss,storedir)
in self.iterate_servers()]
fso.stdout = StringIO()

View File

@ -1,3 +1,6 @@
# BBB: Python 2 compatibility
from builtins import str
from twisted.trial import unittest
from twisted.python import filepath
from twisted.cred import error, credentials
@ -39,7 +42,7 @@ class AccountFileCheckerKeyTests(unittest.TestCase):
def setUp(self):
self.account_file = filepath.FilePath(self.mktemp())
self.account_file.setContent(DUMMY_ACCOUNTS)
abspath = abspath_expanduser_unicode(unicode(self.account_file.path))
abspath = abspath_expanduser_unicode(str(self.account_file.path))
self.checker = auth.AccountFileChecker(None, abspath)
def test_unknown_user(self):

View File

@ -1,9 +1,22 @@
import os, json, urllib
# BBB: Python 2 compatibility
# Can't use `builtins.str` because something deep in Twisted callbacks ends up repr'ing
# a `future.types.newstr.newstr` as a *Python 3* byte string representation under
# *Python 2*:
# File "/home/rpatterson/src/work/sfu/tahoe-lafs/.tox/py27/lib/python2.7/site-packages/allmydata/util/netstring.py", line 43, in split_netstring
# assert data[position] == b","[0], position
# exceptions.AssertionError: 15
# ...
# (Pdb) pp data
# '334:12:b\'mutable-good\',90:URI:SSK-RO:...
from past.builtins import unicode as str
from future.utils import native_str
import os, json, urllib
from twisted.trial import unittest
from twisted.internet import defer
from twisted.internet.defer import inlineCallbacks, returnValue
from allmydata.immutable import upload
from allmydata.mutable.common import UnrecoverableFileError
from allmydata.mutable.publish import MutableData
@ -917,13 +930,13 @@ class DeepCheckWebBad(DeepCheckBase, unittest.TestCase):
if nodetype == "mutable":
mutable_uploadable = MutableData("mutable file contents")
d = self.g.clients[0].create_mutable_file(mutable_uploadable)
d.addCallback(lambda n: self.root.set_node(unicode(name), n))
d.addCallback(lambda n: self.root.set_node(str(name), n))
elif nodetype == "large":
large = upload.Data("Lots of data\n" * 1000 + name + "\n", None)
d = self.root.add_file(unicode(name), large)
d = self.root.add_file(str(name), large)
elif nodetype == "small":
small = upload.Data("Small enough for a LIT", None)
d = self.root.add_file(unicode(name), small)
d = self.root.add_file(str(name), small)
d.addCallback(self._stash_node, name)