Only run tests under Python 3, fix random bitrot

.pre-commit-config.yaml

@@ -1,8 +1,7 @@
 repos:
 -   repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v1.2.3
+    rev: v2.2.3
     hooks:
-    -   id: autopep8-wrapper
     -   id: check-added-large-files
     -   id: check-docstring-first
     -   id: check-executables-have-shebangs
@@ -16,15 +15,28 @@ repos:
     -   id: name-tests-test
     -   id: requirements-txt-fixer
     -   id: trailing-whitespace
+    -   id: fix-encoding-pragma
+        args: ['--remove']
+-   repo: https://github.com/pre-commit/mirrors-autopep8
+    rev: v1.4.4
+    hooks:
+    -   id: autopep8
 -   repo: https://github.com/asottile/reorder_python_imports
-    rev: v1.0.1
+    rev: v1.6.0
     hooks:
     -   id: reorder-python-imports
+        args: ['--py3-plus']
 -   repo: https://github.com/Lucas-C/pre-commit-hooks
-    rev: v1.1.5
+    rev: v1.1.6
     hooks:
     -   id: remove-tabs
 -   repo: https://github.com/asottile/pyupgrade
-    rev: v1.11.3
+    rev: v1.21.0
     hooks:
     -   id: pyupgrade
+        args: ['--py3-plus']
+-   repo: https://github.com/asottile/add-trailing-comma
+    rev: v1.4.1
+    hooks:
+    -   id: add-trailing-comma
+        args: ['--py36-plus']

.travis.yml

@@ -4,16 +4,15 @@ services:
 
 matrix:
     include:
-        - env: ITEST_TARGET=itest_trusty
         - env: ITEST_TARGET=itest_xenial
         - env: ITEST_TARGET=itest_bionic
-        - env: ITEST_TARGET=itest_stretch
+        - env: ITEST_TARGET=itest_buster
         - env: ITEST_TARGET=itest_tox
         - os: linux-ppc64le
-          env: ITEST_TARGET=itest_stretch
+          env: ITEST_TARGET=itest_buster
     allow_failures:
         - os: linux-ppc64le
-          env: ITEST_TARGET=itest_stretch
+          env: ITEST_TARGET=itest_buster
 
 
 script:

Dockerfile

@@ -1,4 +1,4 @@
-FROM debian:stretch
+FROM debian:buster
 
 LABEL maintainer="Chris Kuehl <ckuehl@yelp.com>"
 

Makefile

@@ -69,18 +69,17 @@ test:
 install-hooks:
 	tox -e pre-commit -- install -f --install-hooks
 
-ITEST_TARGETS = itest_trusty itest_xenial itest_bionic itest_stretch
+ITEST_TARGETS = itest_xenial itest_bionic itest_buster
 
 .PHONY: itest $(ITEST_TARGETS)
 itest: $(ITEST_TARGETS)
 
-itest_trusty: _itest-ubuntu-trusty
 itest_xenial: _itest-ubuntu-xenial
 itest_bionic: _itest-ubuntu-bionic
-itest_stretch: _itest-debian-stretch
+itest_buster: _itest-debian-buster
 
 itest_tox:
-	$(DOCKER_RUN_TEST) ubuntu:bionic /mnt/ci/docker-tox-test
+	$(DOCKER_RUN_TEST) debian:buster /mnt/ci/docker-tox-test
 
 _itest-%: _itest_deb-% _itest_python-%
 	@true

ci/docker

@@ -7,10 +7,10 @@ apt-get update
 apt-get install -y --no-install-recommends \
     build-essential \
     procps \
-    python \
-    python-dev \
-    python-pip \
-    python-setuptools
+    python3 \
+    python3-dev \
+    python3-pip \
+    python3-setuptools
 
 cp -r /mnt/ /test
 cd /test

ci/docker-deb-test

@@ -4,7 +4,7 @@ set -o pipefail
 . /mnt/ci/docker
 
 dpkg -i dist/*.deb
-pip install -r requirements-dev.txt
-py.test tests/
+pip3 install -r requirements-dev.txt
+pytest tests/
 
 exec dumb-init /mnt/tests/test-zombies

ci/docker-python-test

@@ -3,10 +3,10 @@ set -o pipefail
 
 . /mnt/ci/docker
 
-python setup.py clean
-python setup.py sdist
-pip install -vv dist/*.tar.gz
-pip install -r requirements-dev.txt
-py.test tests/
+python3 setup.py clean
+python3 setup.py sdist
+pip3 install -vv dist/*.tar.gz
+pip3 install -r requirements-dev.txt
+pytest tests/
 
-exec dumb-init /mnt/tests/test-zombies \
+exec dumb-init /mnt/tests/test-zombies

ci/docker-tox-test

@@ -6,8 +6,7 @@ set -o pipefail
 apt-get update
 apt-get install -y --no-install-recommends \
     git \
-    python2.7-dev \
-    python3.6-dev \
+    python3.7-dev \
     tox
 
 tox

debian/control

@@ -2,16 +2,14 @@ Source: dumb-init
 Section: utils
 Priority: extra
 Maintainer: Chris Kuehl <ckuehl@yelp.com>
-Uploaders: Kent Wills <rkwills@yelp.com>
 Build-Depends:
  debhelper (>= 9),
  help2man,
  musl-tools,
 ## Tests:
  procps,
- python,
- python-mock,
- python-pytest,
+ python3,
+ python3-pytest,
 Standards-Version: 3.9.7
 Homepage: https://github.com/Yelp/dumb-init
 Vcs-Browser: https://github.com/Yelp/dumb-init

debian/rules

@@ -31,4 +31,4 @@ override_dh_builddeb:
 override_dh_auto_test:
 	find . -name '*.pyc' -delete
 	find . -name '__pycache__' -delete
-	PATH=.:$$PATH timeout --signal=KILL 60 py.test -vv tests/
+	PATH=.:$$PATH timeout --signal=KILL 60 pytest-3 -vv tests/

requirements-dev.txt

@@ -1,4 +1,3 @@
-mock
 pre-commit>=0.5.0
 pytest
 pytest-timeout

setup.py

@@ -58,7 +58,8 @@ class install_cexe(Command):
         # this initializes attributes based on other commands' attributes
         self.set_undefined_options('build', ('build_scripts', 'build_dir'))
         self.set_undefined_options(
-            'install', ('install_scripts', 'install_dir'))
+            'install', ('install_scripts', 'install_dir'),
+        )
 
     def run(self):
 

testing/__init__.py

@@ -21,7 +21,7 @@ SUSPEND_SIGNALS = frozenset([
 NORMAL_SIGNALS = frozenset(
     set(range(1, 32)) -
     {signal.SIGKILL, signal.SIGSTOP, signal.SIGCHLD} -
-    SUSPEND_SIGNALS
+    SUSPEND_SIGNALS,
 )
 
 
@@ -57,7 +57,7 @@ def child_pids(pid):
             ppid = int(m.group(1))
             if ppid == pid:
                 children.add(int(p.basename))
-        except IOError:
+        except OSError:
             # Happens when the process exits after listing it, or between
             # opening stat and reading it.
             pass

testing/print_signals.py

@@ -13,7 +13,7 @@ import time
 
 
 CATCHABLE_SIGNALS = frozenset(
-    set(range(1, 32)) - {signal.SIGKILL, signal.SIGSTOP, signal.SIGCHLD}
+    set(range(1, 32)) - {signal.SIGKILL, signal.SIGSTOP, signal.SIGCHLD},
 )
 
 

tests/child_processes_test.py

@@ -17,7 +17,7 @@ def spawn_and_kill_pipeline():
     proc = Popen((
         'dumb-init',
         'sh', '-c',
-        "yes 'oh, hi' | tail & yes error | tail >&2"
+        "yes 'oh, hi' | tail & yes error | tail >&2",
     ))
 
     def assert_living_pids():
@@ -129,12 +129,14 @@ def test_processes_dont_receive_term_on_exit_if_no_setsid():
     os.kill(child_pid, signal.SIGKILL)
 
 
-@pytest.mark.parametrize('args', [
+@pytest.mark.parametrize(
+    'args', [
         ('/doesnotexist',),
         ('--', '/doesnotexist'),
         ('-c', '/doesnotexist'),
         ('--single-child', '--', '/doesnotexist'),
-])
+    ],
+)
 @pytest.mark.usefixtures('both_debug_modes', 'both_setsid_modes')
 def test_fails_nonzero_with_bad_exec(args):
     """If dumb-init can't exec as requested, it should exit nonzero."""

tests/cli_test.py

@@ -120,7 +120,8 @@ def test_verbose_and_single_child(flag1, flag2):
     )
 
 
-@pytest.mark.parametrize('extra_args', [
+@pytest.mark.parametrize(
+    'extra_args', [
         ('-r',),
         ('-r', ''),
         ('-r', 'herp'),
@@ -131,7 +132,8 @@ def test_verbose_and_single_child(flag1, flag2):
         ('-r', '15:12', '-r'),
         ('-r', '15:12', '-r', '0'),
         ('-r', '15:12', '-r', '1:32'),
-])
+    ],
+)
 @pytest.mark.usefixtures('both_debug_modes', 'both_setsid_modes')
 def test_rewrite_errors(extra_args):
     proc = Popen(

tests/conftest.py

@@ -1,6 +1,6 @@
 import os
+from unittest import mock
 
-import mock
 import pytest
 
 

tests/exit_status_test.py

@@ -16,12 +16,14 @@ def test_exit_status_regular_exit(exit_status):
     assert proc.returncode == exit_status
 
 
-@pytest.mark.parametrize('signal', [
+@pytest.mark.parametrize(
+    'signal', [
         signal.SIGTERM,
         signal.SIGHUP,
         signal.SIGQUIT,
         signal.SIGKILL,
-])
+    ],
+)
 @pytest.mark.usefixtures('both_debug_modes', 'both_setsid_modes')
 def test_exit_status_terminated_by_signal(signal):
     """dumb-init should exit with status 128 + signal when the child process is
@@ -29,8 +31,10 @@ def test_exit_status_terminated_by_signal(signal):
     """
     # We use Python because sh is "dash" on Debian and "bash" on others.
     # https://github.com/Yelp/dumb-init/issues/115
-    proc = Popen(('dumb-init', sys.executable, '-c', 'import os; os.kill(os.getpid(), {})'.format(
+    proc = Popen((
+        'dumb-init', sys.executable, '-c', 'import os; os.kill(os.getpid(), {})'.format(
             signal,
-    )))
+        ),
+    ))
     proc.wait()
     assert proc.returncode == 128 + signal

tests/proxies_signals_test.py

@@ -24,7 +24,8 @@ def _rewrite_map_to_args(rewrite_map):
     )
 
 
-@pytest.mark.parametrize('rewrite_map,sequence,expected', [
+@pytest.mark.parametrize(
+    'rewrite_map,sequence,expected', [
         (
             {},
             [signal.SIGTERM, signal.SIGQUIT, signal.SIGCONT, signal.SIGINT],
@@ -53,7 +54,8 @@ def _rewrite_map_to_args(rewrite_map):
             [1, 31],
             [31, 1],
         ),
-])
+    ],
+)
 @pytest.mark.usefixtures('both_debug_modes', 'both_setsid_modes')
 def test_proxies_signals_with_rewrite(rewrite_map, sequence, expected):
     """Ensure dumb-init can rewrite signals."""

tox.ini

@@ -1,20 +1,21 @@
 [tox]
-envlist = py27,py36,gcov
+envlist = py37,gcov
 
 [testenv]
 deps = -r{toxinidir}/requirements-dev.txt
 commands =
-    python -m pytest
+    pytest
 
 [testenv:gcov]
 skip_install = True
+basepython = /usr/bin/python3.7
 commands =
     {toxinidir}/ci/gcov-build {envbindir}
     {[testenv]commands}
     {toxinidir}/ci/gcov-report
 
 [testenv:pre-commit]
-basepython = /usr/bin/python3.6
+basepython = /usr/bin/python3.7
 commands = pre-commit {posargs:run --all-files}
 
 [flake8]