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Convert all of the asynchronous functions to use async and await

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Jean-Paul Calderone 2022-11-30 09:30:37 -05:00
parent 1acf8604ef
commit a11eeaf240
1 changed files with 228 additions and 318 deletions
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340
src/allmydata/test/mutable/test_version.py
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@ -5,8 +5,8 @@ of data for an object.
from io import StringIO from io import StringIO
import os import os
from typing import Optional
from twisted.internet import defer
from ..common import AsyncTestCase from ..common import AsyncTestCase
from testtools.matchers import ( from testtools.matchers import (
Equals, Equals,
@ -40,49 +40,38 @@ class Version(GridTestMixin, AsyncTestCase, testutil.ShouldFailMixin, \
self.small_data = b"test data" * 10 # 90 B; SDMF self.small_data = b"test data" * 10 # 90 B; SDMF
def do_upload_mdmf(self, data=None): async def do_upload_mdmf(self, data: Optional[bytes] = None) -> MutableFileNode:
if data is None: if data is None:
data = self.data data = self.data
d = self.nm.create_mutable_file(MutableData(data), n = await self.nm.create_mutable_file(MutableData(data),
version=MDMF_VERSION) version=MDMF_VERSION)
def _then(n):
self.assertThat(n, IsInstance(MutableFileNode)) self.assertThat(n, IsInstance(MutableFileNode))
self.assertThat(n._protocol_version, Equals(MDMF_VERSION)) self.assertThat(n._protocol_version, Equals(MDMF_VERSION))
self.mdmf_node = n self.mdmf_node = n
return n return n
d.addCallback(_then)
return d
def do_upload_sdmf(self, data=None): async def do_upload_sdmf(self, data: Optional[bytes] = None) -> MutableFileNode:
if data is None: if data is None:
data = self.small_data data = self.small_data
d = self.nm.create_mutable_file(MutableData(data)) n = await self.nm.create_mutable_file(MutableData(data))
def _then(n):
self.assertThat(n, IsInstance(MutableFileNode)) self.assertThat(n, IsInstance(MutableFileNode))
self.assertThat(n._protocol_version, Equals(SDMF_VERSION)) self.assertThat(n._protocol_version, Equals(SDMF_VERSION))
self.sdmf_node = n self.sdmf_node = n
return n return n
d.addCallback(_then)
return d
def do_upload_empty_sdmf(self): async def do_upload_empty_sdmf(self) -> MutableFileNode:
d = self.nm.create_mutable_file(MutableData(b"")) n = await self.nm.create_mutable_file(MutableData(b""))
def _then(n):
self.assertThat(n, IsInstance(MutableFileNode)) self.assertThat(n, IsInstance(MutableFileNode))
self.sdmf_zero_length_node = n self.sdmf_zero_length_node = n
self.assertThat(n._protocol_version, Equals(SDMF_VERSION)) self.assertThat(n._protocol_version, Equals(SDMF_VERSION))
return n return n
d.addCallback(_then)
return d
def do_upload(self): async def do_upload(self) -> MutableFileNode:
d = self.do_upload_mdmf() await self.do_upload_mdmf()
d.addCallback(lambda ign: self.do_upload_sdmf()) return await self.do_upload_sdmf()
return d
def test_debug(self): async def test_debug(self) -> None:
d = self.do_upload_mdmf() n = await self.do_upload_mdmf()
def _debug(n):
fso = debug.FindSharesOptions() fso = debug.FindSharesOptions()
storage_index = base32.b2a(n.get_storage_index()) storage_index = base32.b2a(n.get_storage_index())
fso.si_s = str(storage_index, "utf-8") # command-line options are unicode on Python 3 fso.si_s = str(storage_index, "utf-8") # command-line options are unicode on Python 3
@ -132,165 +121,123 @@ class Version(GridTestMixin, AsyncTestCase, testutil.ShouldFailMixin, \
# encryption salts and is not constant. fields[5] is the # encryption salts and is not constant. fields[5] is the
# remaining time on the longest lease, which is timing dependent. # remaining time on the longest lease, which is timing dependent.
# The rest of the line is the quoted pathname to the share. # The rest of the line is the quoted pathname to the share.
d.addCallback(_debug)
return d
def test_get_sequence_number(self): async def test_get_sequence_number(self) -> None:
d = self.do_upload() await self.do_upload()
d.addCallback(lambda ign: self.mdmf_node.get_best_readable_version()) bv = await self.mdmf_node.get_best_readable_version()
d.addCallback(lambda bv: self.assertThat(bv.get_sequence_number(), Equals(1))
self.assertThat(bv.get_sequence_number(), Equals(1))) bv = await self.sdmf_node.get_best_readable_version()
d.addCallback(lambda ignored: self.assertThat(bv.get_sequence_number(), Equals(1))
self.sdmf_node.get_best_readable_version())
d.addCallback(lambda bv:
self.assertThat(bv.get_sequence_number(), Equals(1)))
# Now update. The sequence number in both cases should be 1 in # Now update. The sequence number in both cases should be 1 in
# both cases. # both cases.
def _do_update(ignored):
new_data = MutableData(b"foo bar baz" * 100000) new_data = MutableData(b"foo bar baz" * 100000)
new_small_data = MutableData(b"foo bar baz" * 10) new_small_data = MutableData(b"foo bar baz" * 10)
d1 = self.mdmf_node.overwrite(new_data) d1 = self.mdmf_node.overwrite(new_data)
d2 = self.sdmf_node.overwrite(new_small_data) d2 = self.sdmf_node.overwrite(new_small_data)
dl = gatherResults([d1, d2]) await gatherResults([d1, d2])
return dl bv = await self.mdmf_node.get_best_readable_version()
d.addCallback(_do_update) self.assertThat(bv.get_sequence_number(), Equals(2))
d.addCallback(lambda ignored: bv = await self.sdmf_node.get_best_readable_version()
self.mdmf_node.get_best_readable_version()) self.assertThat(bv.get_sequence_number(), Equals(2))
d.addCallback(lambda bv:
self.assertThat(bv.get_sequence_number(), Equals(2)))
d.addCallback(lambda ignored:
self.sdmf_node.get_best_readable_version())
d.addCallback(lambda bv:
self.assertThat(bv.get_sequence_number(), Equals(2)))
return d
async def test_cap_after_upload(self) -> None:
def test_cap_after_upload(self):
# If we create a new mutable file and upload things to it, and # If we create a new mutable file and upload things to it, and
# it's an MDMF file, we should get an MDMF cap back from that # it's an MDMF file, we should get an MDMF cap back from that
# file and should be able to use that. # file and should be able to use that.
# That's essentially what MDMF node is, so just check that. # That's essentially what MDMF node is, so just check that.
d = self.do_upload_mdmf() await self.do_upload_mdmf()
def _then(ign):
mdmf_uri = self.mdmf_node.get_uri() mdmf_uri = self.mdmf_node.get_uri()
cap = uri.from_string(mdmf_uri) cap = uri.from_string(mdmf_uri)
self.assertTrue(isinstance(cap, uri.WriteableMDMFFileURI)) self.assertTrue(isinstance(cap, uri.WriteableMDMFFileURI))
readonly_mdmf_uri = self.mdmf_node.get_readonly_uri() readonly_mdmf_uri = self.mdmf_node.get_readonly_uri()
cap = uri.from_string(readonly_mdmf_uri) cap = uri.from_string(readonly_mdmf_uri)
self.assertTrue(isinstance(cap, uri.ReadonlyMDMFFileURI)) self.assertTrue(isinstance(cap, uri.ReadonlyMDMFFileURI))
d.addCallback(_then)
return d
def test_mutable_version(self): async def test_mutable_version(self) -> None:
# assert that getting parameters from the IMutableVersion object # assert that getting parameters from the IMutableVersion object
# gives us the same data as getting them from the filenode itself # gives us the same data as getting them from the filenode itself
d = self.do_upload() await self.do_upload()
d.addCallback(lambda ign: self.mdmf_node.get_best_mutable_version()) bv = await self.mdmf_node.get_best_mutable_version()
def _check_mdmf(bv):
n = self.mdmf_node n = self.mdmf_node
self.assertThat(bv.get_writekey(), Equals(n.get_writekey())) self.assertThat(bv.get_writekey(), Equals(n.get_writekey()))
self.assertThat(bv.get_storage_index(), Equals(n.get_storage_index())) self.assertThat(bv.get_storage_index(), Equals(n.get_storage_index()))
self.assertFalse(bv.is_readonly()) self.assertFalse(bv.is_readonly())
d.addCallback(_check_mdmf)
d.addCallback(lambda ign: self.sdmf_node.get_best_mutable_version()) bv = await self.sdmf_node.get_best_mutable_version()
def _check_sdmf(bv):
n = self.sdmf_node n = self.sdmf_node
self.assertThat(bv.get_writekey(), Equals(n.get_writekey())) self.assertThat(bv.get_writekey(), Equals(n.get_writekey()))
self.assertThat(bv.get_storage_index(), Equals(n.get_storage_index())) self.assertThat(bv.get_storage_index(), Equals(n.get_storage_index()))
self.assertFalse(bv.is_readonly()) self.assertFalse(bv.is_readonly())
d.addCallback(_check_sdmf)
return d
def test_get_readonly_version(self): async def test_get_readonly_version(self) -> None:
d = self.do_upload() await self.do_upload()
d.addCallback(lambda ign: self.mdmf_node.get_best_readable_version()) bv = await self.mdmf_node.get_best_readable_version()
d.addCallback(lambda bv: self.assertTrue(bv.is_readonly())) self.assertTrue(bv.is_readonly())
# Attempting to get a mutable version of a mutable file from a # Attempting to get a mutable version of a mutable file from a
# filenode initialized with a readcap should return a readonly # filenode initialized with a readcap should return a readonly
# version of that same node. # version of that same node.
d.addCallback(lambda ign: self.mdmf_node.get_readonly()) ro = self.mdmf_node.get_readonly()
d.addCallback(lambda ro: ro.get_best_mutable_version()) v = await ro.get_best_mutable_version()
d.addCallback(lambda v: self.assertTrue(v.is_readonly())) self.assertTrue(v.is_readonly())
d.addCallback(lambda ign: self.sdmf_node.get_best_readable_version()) bv = await self.sdmf_node.get_best_readable_version()
d.addCallback(lambda bv: self.assertTrue(bv.is_readonly())) self.assertTrue(bv.is_readonly())
d.addCallback(lambda ign: self.sdmf_node.get_readonly()) ro = self.sdmf_node.get_readonly()
d.addCallback(lambda ro: ro.get_best_mutable_version()) v = await ro.get_best_mutable_version()
d.addCallback(lambda v: self.assertTrue(v.is_readonly())) self.assertTrue(v.is_readonly())
return d
def test_toplevel_overwrite(self): async def test_toplevel_overwrite(self) -> None:
new_data = MutableData(b"foo bar baz" * 100000) new_data = MutableData(b"foo bar baz" * 100000)
new_small_data = MutableData(b"foo bar baz" * 10) new_small_data = MutableData(b"foo bar baz" * 10)
d = self.do_upload() await self.do_upload()
d.addCallback(lambda ign: self.mdmf_node.overwrite(new_data)) await self.mdmf_node.overwrite(new_data)
d.addCallback(lambda ignored: data = await self.mdmf_node.download_best_version()
self.mdmf_node.download_best_version()) self.assertThat(data, Equals(b"foo bar baz" * 100000))
d.addCallback(lambda data: await self.sdmf_node.overwrite(new_small_data)
self.assertThat(data, Equals(b"foo bar baz" * 100000))) data = await self.sdmf_node.download_best_version()
d.addCallback(lambda ignored: self.assertThat(data, Equals(b"foo bar baz" * 10))
self.sdmf_node.overwrite(new_small_data))
d.addCallback(lambda ignored:
self.sdmf_node.download_best_version())
d.addCallback(lambda data:
self.assertThat(data, Equals(b"foo bar baz" * 10)))
return d
def test_toplevel_modify(self): async def test_toplevel_modify(self) -> None:
d = self.do_upload() await self.do_upload()
def modifier(old_contents, servermap, first_time): def modifier(old_contents, servermap, first_time):
return old_contents + b"modified" return old_contents + b"modified"
d.addCallback(lambda ign: self.mdmf_node.modify(modifier)) await self.mdmf_node.modify(modifier)
d.addCallback(lambda ignored: data = await self.mdmf_node.download_best_version()
self.mdmf_node.download_best_version()) self.assertThat(data, Contains(b"modified"))
d.addCallback(lambda data: await self.sdmf_node.modify(modifier)
self.assertThat(data, Contains(b"modified"))) data = await self.sdmf_node.download_best_version()
d.addCallback(lambda ignored: self.assertThat(data, Contains(b"modified"))
self.sdmf_node.modify(modifier))
d.addCallback(lambda ignored:
self.sdmf_node.download_best_version())
d.addCallback(lambda data:
self.assertThat(data, Contains(b"modified")))
return d
def test_version_modify(self): async def test_version_modify(self) -> None:
# TODO: When we can publish multiple versions, alter this test # TODO: When we can publish multiple versions, alter this test
# to modify a version other than the best usable version, then # to modify a version other than the best usable version, then
# test to see that the best recoverable version is that. # test to see that the best recoverable version is that.
d = self.do_upload() await self.do_upload()
def modifier(old_contents, servermap, first_time): def modifier(old_contents, servermap, first_time):
return old_contents + b"modified" return old_contents + b"modified"
d.addCallback(lambda ign: self.mdmf_node.modify(modifier)) await self.mdmf_node.modify(modifier)
d.addCallback(lambda ignored: data = await self.mdmf_node.download_best_version()
self.mdmf_node.download_best_version()) self.assertThat(data, Contains(b"modified"))
d.addCallback(lambda data: await self.sdmf_node.modify(modifier)
self.assertThat(data, Contains(b"modified"))) data = await self.sdmf_node.download_best_version()
d.addCallback(lambda ignored: self.assertThat(data, Contains(b"modified"))
self.sdmf_node.modify(modifier))
d.addCallback(lambda ignored:
self.sdmf_node.download_best_version())
d.addCallback(lambda data:
self.assertThat(data, Contains(b"modified")))
return d
def test_download_version(self): async def test_download_version(self) -> None:
d = self.publish_multiple() await self.publish_multiple()
# We want to have two recoverable versions on the grid. # We want to have two recoverable versions on the grid.
d.addCallback(lambda res:
self._set_versions({0:0,2:0,4:0,6:0,8:0, self._set_versions({0:0,2:0,4:0,6:0,8:0,
1:1,3:1,5:1,7:1,9:1})) 1:1,3:1,5:1,7:1,9:1})
# Now try to download each version. We should get the plaintext # Now try to download each version. We should get the plaintext
# associated with that version. # associated with that version.
d.addCallback(lambda ignored: smap = await self._fn.get_servermap(mode=MODE_READ)
self._fn.get_servermap(mode=MODE_READ))
def _got_servermap(smap):
versions = smap.recoverable_versions() versions = smap.recoverable_versions()
assert len(versions) == 2 assert len(versions) == 2
@ -303,60 +250,42 @@ class Version(GridTestMixin, AsyncTestCase, testutil.ShouldFailMixin, \
self.version1_index = self.version1_seqnum - 1 self.version1_index = self.version1_seqnum - 1
self.version2_index = self.version2_seqnum - 1 self.version2_index = self.version2_seqnum - 1
d.addCallback(_got_servermap) results = await self._fn.download_version(self.servermap, self.version1)
d.addCallback(lambda ignored:
self._fn.download_version(self.servermap, self.version1))
d.addCallback(lambda results:
self.assertThat(self.CONTENTS[self.version1_index], self.assertThat(self.CONTENTS[self.version1_index],
Equals(results))) Equals(results))
d.addCallback(lambda ignored: results = await self._fn.download_version(self.servermap, self.version2)
self._fn.download_version(self.servermap, self.version2))
d.addCallback(lambda results:
self.assertThat(self.CONTENTS[self.version2_index], self.assertThat(self.CONTENTS[self.version2_index],
Equals(results))) Equals(results))
return d
def test_download_nonexistent_version(self): async def test_download_nonexistent_version(self) -> None:
d = self.do_upload_mdmf() await self.do_upload_mdmf()
d.addCallback(lambda ign: self.mdmf_node.get_servermap(mode=MODE_WRITE)) servermap = await self.mdmf_node.get_servermap(mode=MODE_WRITE)
def _set_servermap(servermap): await self.shouldFail(UnrecoverableFileError, "nonexistent version",
self.servermap = servermap
d.addCallback(_set_servermap)
d.addCallback(lambda ignored:
self.shouldFail(UnrecoverableFileError, "nonexistent version",
None, None,
self.mdmf_node.download_version, self.servermap, self.mdmf_node.download_version, servermap,
"not a version")) "not a version")
return d
def _test_partial_read(self, node, expected, modes, step): async def _test_partial_read(self, node, expected, modes, step) -> None:
d = node.get_best_readable_version() version = await node.get_best_readable_version()
for (name, offset, length) in modes: for (name, offset, length) in modes:
d.addCallback(self._do_partial_read, name, expected, offset, length) version = await self._do_partial_read(version, name, expected, offset, length)
# then read the whole thing, but only a few bytes at a time, and see # then read the whole thing, but only a few bytes at a time, and see
# that the results are what we expect. # that the results are what we expect.
def _read_data(version):
c = consumer.MemoryConsumer() c = consumer.MemoryConsumer()
d2 = defer.succeed(None)
for i in range(0, len(expected), step): for i in range(0, len(expected), step):
d2.addCallback(lambda ignored, i=i: version.read(c, i, step)) await version.read(c, i, step)
d2.addCallback(lambda ignored: self.assertThat(expected, Equals(b"".join(c.chunks)))
self.assertThat(expected, Equals(b"".join(c.chunks))))
return d2
d.addCallback(_read_data)
return d
def _do_partial_read(self, version, name, expected, offset, length): async def _do_partial_read(self, version, name, expected, offset, length) -> None:
c = consumer.MemoryConsumer() c = consumer.MemoryConsumer()
d = version.read(c, offset, length) await version.read(c, offset, length)
if length is None: if length is None:
expected_range = expected[offset:] expected_range = expected[offset:]
else: else:
expected_range = expected[offset:offset+length] expected_range = expected[offset:offset+length]
d.addCallback(lambda ignored: b"".join(c.chunks)) results = b"".join(c.chunks)
def _check(results):
if results != expected_range: if results != expected_range:
print("read([%d]+%s) got %d bytes, not %d" % \ print("read([%d]+%s) got %d bytes, not %d" % \
(offset, length, len(results), len(expected_range))) (offset, length, len(results), len(expected_range)))
@ -364,19 +293,16 @@ class Version(GridTestMixin, AsyncTestCase, testutil.ShouldFailMixin, \
print("exp: %s ... %s" % (expected_range[:20], expected_range[-20:])) print("exp: %s ... %s" % (expected_range[:20], expected_range[-20:]))
self.fail("results[%s] != expected_range" % name) self.fail("results[%s] != expected_range" % name)
return version # daisy-chained to next call return version # daisy-chained to next call
d.addCallback(_check)
return d
def test_partial_read_mdmf_0(self): async def test_partial_read_mdmf_0(self) -> None:
data = b"" data = b""
d = self.do_upload_mdmf(data=data) result = await self.do_upload_mdmf(data=data)
modes = [("all1", 0,0), modes = [("all1", 0,0),
("all2", 0,None), ("all2", 0,None),
] ]
d.addCallback(self._test_partial_read, data, modes, 1) await self._test_partial_read(result, data, modes, 1)
return d
def test_partial_read_mdmf_large(self): async def test_partial_read_mdmf_large(self) -> None:
segment_boundary = mathutil.next_multiple(128 * 1024, 3) segment_boundary = mathutil.next_multiple(128 * 1024, 3)
modes = [("start_on_segment_boundary", segment_boundary, 50), modes = [("start_on_segment_boundary", segment_boundary, 50),
("ending_one_byte_after_segment_boundary", segment_boundary-50, 51), ("ending_one_byte_after_segment_boundary", segment_boundary-50, 51),
@ -386,20 +312,18 @@ class Version(GridTestMixin, AsyncTestCase, testutil.ShouldFailMixin, \
("complete_file1", 0, len(self.data)), ("complete_file1", 0, len(self.data)),
("complete_file2", 0, None), ("complete_file2", 0, None),
] ]
d = self.do_upload_mdmf() result = await self.do_upload_mdmf()
d.addCallback(self._test_partial_read, self.data, modes, 10000) await self._test_partial_read(result, self.data, modes, 10000)
return d
def test_partial_read_sdmf_0(self): async def test_partial_read_sdmf_0(self) -> None:
data = b"" data = b""
modes = [("all1", 0,0), modes = [("all1", 0,0),
("all2", 0,None), ("all2", 0,None),
] ]
d = self.do_upload_sdmf(data=data) result = await self.do_upload_sdmf(data=data)
d.addCallback(self._test_partial_read, data, modes, 1) await self._test_partial_read(result, data, modes, 1)
return d
def test_partial_read_sdmf_2(self): async def test_partial_read_sdmf_2(self) -> None:
data = b"hi" data = b"hi"
modes = [("one_byte", 0, 1), modes = [("one_byte", 0, 1),
("last_byte", 1, 1), ("last_byte", 1, 1),
@ -407,11 +331,10 @@ class Version(GridTestMixin, AsyncTestCase, testutil.ShouldFailMixin, \
("complete_file", 0, 2), ("complete_file", 0, 2),
("complete_file2", 0, None), ("complete_file2", 0, None),
] ]
d = self.do_upload_sdmf(data=data) result = await self.do_upload_sdmf(data=data)
d.addCallback(self._test_partial_read, data, modes, 1) await self._test_partial_read(result, data, modes, 1)
return d
def test_partial_read_sdmf_90(self): async def test_partial_read_sdmf_90(self) -> None:
modes = [("start_at_middle", 50, 40), modes = [("start_at_middle", 50, 40),
("start_at_middle2", 50, None), ("start_at_middle2", 50, None),
("zero_length_at_start", 0, 0), ("zero_length_at_start", 0, 0),
@ -420,11 +343,10 @@ class Version(GridTestMixin, AsyncTestCase, testutil.ShouldFailMixin, \
("complete_file1", 0, None), ("complete_file1", 0, None),
("complete_file2", 0, 90), ("complete_file2", 0, 90),
] ]
d = self.do_upload_sdmf() result = await self.do_upload_sdmf()
d.addCallback(self._test_partial_read, self.small_data, modes, 10) await self._test_partial_read(result, self.small_data, modes, 10)
return d
def test_partial_read_sdmf_100(self): async def test_partial_read_sdmf_100(self) -> None:
data = b"test data "*10 data = b"test data "*10
modes = [("start_at_middle", 50, 50), modes = [("start_at_middle", 50, 50),
("start_at_middle2", 50, None), ("start_at_middle2", 50, None),
@ -433,42 +355,30 @@ class Version(GridTestMixin, AsyncTestCase, testutil.ShouldFailMixin, \
("complete_file1", 0, 100), ("complete_file1", 0, 100),
("complete_file2", 0, None), ("complete_file2", 0, None),
] ]
d = self.do_upload_sdmf(data=data) result = await self.do_upload_sdmf(data=data)
d.addCallback(self._test_partial_read, data, modes, 10) await self._test_partial_read(result, data, modes, 10)
return d
async def _test_read_and_download(self, node, expected) -> None:
def _test_read_and_download(self, node, expected): version = await node.get_best_readable_version()
d = node.get_best_readable_version()
def _read_data(version):
c = consumer.MemoryConsumer() c = consumer.MemoryConsumer()
await version.read(c)
self.assertThat(expected, Equals(b"".join(c.chunks)))
c2 = consumer.MemoryConsumer() c2 = consumer.MemoryConsumer()
d2 = defer.succeed(None) await version.read(c2, offset=0, size=len(expected))
d2.addCallback(lambda ignored: version.read(c)) self.assertThat(expected, Equals(b"".join(c2.chunks)))
d2.addCallback(lambda ignored:
self.assertThat(expected, Equals(b"".join(c.chunks))))
d2.addCallback(lambda ignored: version.read(c2, offset=0, data = await node.download_best_version()
size=len(expected))) self.assertThat(expected, Equals(data))
d2.addCallback(lambda ignored:
self.assertThat(expected, Equals(b"".join(c2.chunks))))
return d2
d.addCallback(_read_data)
d.addCallback(lambda ignored: node.download_best_version())
d.addCallback(lambda data: self.assertThat(expected, Equals(data)))
return d
def test_read_and_download_mdmf(self): async def test_read_and_download_mdmf(self) -> None:
d = self.do_upload_mdmf() result = await self.do_upload_mdmf()
d.addCallback(self._test_read_and_download, self.data) await self._test_read_and_download(result, self.data)
return d
def test_read_and_download_sdmf(self): async def test_read_and_download_sdmf(self) -> None:
d = self.do_upload_sdmf() result = await self.do_upload_sdmf()
d.addCallback(self._test_read_and_download, self.small_data) await self._test_read_and_download(result, self.small_data)
return d
def test_read_and_download_sdmf_zero_length(self): async def test_read_and_download_sdmf_zero_length(self) -> None:
d = self.do_upload_empty_sdmf() result = await self.do_upload_empty_sdmf()
d.addCallback(self._test_read_and_download, b"") await self._test_read_and_download(result, b"")
return d