Just run unit tests normally on Python 3.

src/allmydata/test/python3_tests.py

@@ -1,37 +0,0 @@
-"""
-This module defines the subset of the full test suite which is expected to
-pass on Python 3 in a way which makes that suite discoverable by trial.
-
-This module has been ported to Python 3.
-"""
-
-from __future__ import unicode_literals
-from __future__ import absolute_import
-from __future__ import division
-from __future__ import print_function
-
-from future.utils import PY2
-if PY2:
-    from builtins import filter, map, zip, ascii, chr, hex, input, next, oct, open, pow, round, super, bytes, dict, list, object, range, str, max, min  # noqa: F401
-
-from twisted.python.reflect import (
-    namedModule,
-)
-from twisted.trial.runner import (
-    TestLoader,
-)
-from twisted.trial.unittest import (
-    TestSuite,
-)
-
-from allmydata.util._python3 import (
-    PORTED_TEST_MODULES,
-)
-
-def testSuite():
-    loader = TestLoader()
-    return TestSuite(list(
-        loader.loadModule(namedModule(module))
-        for module
-        in PORTED_TEST_MODULES
-    ))

src/allmydata/util/_python3.py

@@ -1,14 +1,8 @@
 """
 Track the port to Python 3.
 
-The two easiest ways to run the part of the test suite which is expected to
-pass on Python 3 are::
-
-    $ tox -e py36
-
-and::
-
-    $ trial allmydata.test.python3_tests
+At this point all unit tests have been ported to Python 3, so you can just run
+them normally.
 
 This module has been ported to Python 3.
 """

tox.ini

@@ -62,8 +62,7 @@ extras = test
 setenv =
        # Define TEST_SUITE in the environment as an aid to constructing the
        # correct test command below.
-       !py36: TEST_SUITE = allmydata
-       py36: TEST_SUITE = allmydata.test.python3_tests
+       TEST_SUITE = allmydata
 
 commands =
          # As an aid to debugging, dump all of the Python packages and their