Replace flake8, bugbear, isort, and pyupgrade with ruff (#568)

.github/dependabot.yml

@@ -5,4 +5,3 @@ updates:
     directory: "/"
     schedule:
       interval: "weekly"
-

.github/workflows/build.yaml

@@ -6,6 +6,13 @@ on:
   schedule:
     - cron: '0 4 * * 1'
 jobs:
+  ruff:  # https://beta.ruff.rs
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - run: pip install --user ruff
+    - run: ruff --format=github .
+
   # this job ensures that tests can run from the packaged version, which means
   # that nose2 is correctly packaging and distributing its tests
   test-sdist:
@@ -27,6 +34,7 @@ jobs:
           nose2 -v --pretty-assert
 
   test:
+    needs: ruff
     strategy:
       fail-fast: false
       matrix:

.pre-commit-config.yaml

@@ -3,36 +3,36 @@ repos:
   rev: v4.4.0
   hooks:
     - id: check-merge-conflict
+    - id: check-toml
+    - id: check-yaml
+    - id: end-of-file-fixer
     - id: trailing-whitespace
 - repo: https://github.com/python-jsonschema/check-jsonschema
   rev: 0.22.0
   hooks:
     - id: check-github-workflows
     - id: check-dependabot
     - id: check-readthedocs
-- repo: https://github.com/asottile/pyupgrade
-  rev: v3.3.1
-  hooks:
-    - id: pyupgrade
-      args: ["--py36-plus"]
 - repo: https://github.com/psf/black
   rev: 23.3.0
   hooks:
   - id: black
     language_version: python3
-- repo: https://github.com/PyCQA/flake8
-  rev: 6.0.0
-  hooks:
-  - id: flake8
-    language_version: python3
-    additional_dependencies: ['flake8-bugbear==22.7.1']
-- repo: https://github.com/PyCQA/isort
-  rev: 5.12.0
-  hooks:
-  - id: isort
-    language_version: python3
-    types: [python]
 - repo: https://github.com/codespell-project/codespell
   rev: v2.2.4
   hooks:
     - id: codespell
+      additional_dependencies:
+        - tomli
+- repo: https://github.com/charliermarsh/ruff-pre-commit
+  rev: v0.0.261
+  hooks:
+    - id: ruff
+- repo: https://github.com/abravalheri/validate-pyproject
+  rev: v0.12.2
+  hooks:
+    - id: validate-pyproject
+- repo: https://github.com/tox-dev/pyproject-fmt
+  rev: 0.9.2
+  hooks:
+    - id: pyproject-fmt

contributing.rst

@@ -42,8 +42,8 @@ You can also use ``make test`` and ``make lint`` for these.
 Linting
 +++++++
 
-nose2 uses `black`_, `isort`_, and `flake8`_ to enforce linting and code
-style rules, and `pre-commit`_ to run these tools.
+nose2 uses `black`_ and `ruff`_ to enforce code formatting and linting and
+`pre-commit`_ to run these tools.
 
 For the best development experience, we recommend setting up integrations with
 your editor and git.
@@ -59,9 +59,8 @@ have ``pre-commit`` installed and run:
     If you need to bypass pre-commit hooks after setting this up, you can commit
     with ``--no-verify``
 
-.. _github: https://github.com/nose-devs/nose2
-.. _tox: http://pypi.python.org/pypi/tox
 .. _black: https://black.readthedocs.io/
-.. _isort: https://pycqa.github.io/isort/
-.. _flake8: https://flake8.pycqa.org/
+.. _github: https://github.com/nose-devs/nose2
 .. _pre-commit: https://pre-commit.com/
+.. _ruff: https://beta.ruff.rs/docs/
+.. _tox: http://pypi.python.org/pypi/tox

docs/decorators.rst

@@ -8,4 +8,4 @@ Setup & Teardown
 ================
 
 .. autofunction :: nose2.tools.decorators.with_setup
-.. autofunction :: nose2.tools.decorators.with_teardown
+.. autofunction :: nose2.tools.decorators.with_teardown

docs/index.rst

@@ -2,4 +2,3 @@
 
 .. include :: ../README.rst
 .. include :: contents.rst.inc
-

docs/plugins/collect.rst

@@ -3,4 +3,3 @@ Collecting tests without running them
 =====================================
 
 .. autoplugin :: nose2.plugins.collect.CollectOnly
-

docs/plugins/doctests.rst

@@ -3,5 +3,3 @@ Loader: Doctests
 ================
 
 .. autoplugin :: nose2.plugins.doctests.DocTestLoader
-
-

docs/plugins/functions.rst

@@ -3,4 +3,3 @@ Loader: Test Functions
 ======================
 
 .. autoplugin :: nose2.plugins.loader.functions.Functions
-

docs/plugins/junitxml.rst

@@ -88,4 +88,3 @@ The XML test report for nose2's sample scenario with tests in a package looks li
   </failure>
     </testcase>
   </testsuite>
-

docs/plugins/outcomes.rst

@@ -3,4 +3,3 @@ Mapping exceptions to test outcomes
 ===================================
 
 .. autoplugin :: nose2.plugins.outcomes.Outcomes
-

docs/plugins/testid.rst

@@ -3,4 +3,3 @@ Using Test IDs
 ==============
 
 .. autoplugin :: nose2.plugins.testid.TestId
-

nose2/plugins/junitxml.py

@@ -346,10 +346,10 @@ def _iso_timestamp(self):
     ]
 
 ILLEGAL_REGEX_STR = (
-    "[" + "".join([f"{chr(l)}-{chr(h)}" for (l, h) in ILLEGAL_RANGES]) + "]"
+    "[" + "".join([f"{chr(lo)}-{chr(hi)}" for (lo, hi) in ILLEGAL_RANGES]) + "]"
 )
 RESTRICTED_REGEX_STR = (
-    "[" + "".join([f"{chr(l)}-{chr(h)}" for (l, h) in RESTRICTED_RANGES]) + "]"
+    "[" + "".join([f"{chr(lo)}-{chr(hi)}" for (lo, hi) in RESTRICTED_RANGES]) + "]"
 )
 
 _ILLEGAL_REGEX = re.compile(ILLEGAL_REGEX_STR, re.U)

nose2/plugins/layers.py

@@ -147,7 +147,7 @@ def add_layer_to_tree(cls, tree, layer):
             raise exceptions.LoadTestsFailure(err.format(layer))
         for parent in parents:
             if parent not in tree and parent is not object:
-                raise MissingParentLayer()
+                raise MissingParentLayer
         # if we reached that point, then all the parents are in the tree
         # if there are multiple parents, we first try to get the closest
         # to the current layer.

nose2/plugins/mp.py

@@ -343,7 +343,7 @@ def procserver(session_export, conn):
         # XXX If there a need to protect the loop? try/except?
         rlog.debug("Execute test %s (%s)", testid, test)
         executor(test, event.result)
-        events = [e for e in ssn.hooks.flush()]
+        events = list(ssn.hooks.flush())
         try:
             conn.send((testid, events))
             rlog.debug("Log for %s returned", testid)

nose2/session.py

@@ -90,7 +90,7 @@ def __init__(self):
         self.testResult = None
         self.testLoader = None
         self.logLevel = logging.WARN
-        self.configCache = dict()
+        self.configCache = {}
 
     def get(self, section):
         """Get a config section.

nose2/sphinxext.py

@@ -119,8 +119,8 @@ def add_config(self, rst, config, plugin):
             info = config.vars[var]
             rst.append(".. rst:configvar :: %s" % var, AD)
             rst.append("  ", AD)
-            rst.append("  :Default: %(default)s" % info, AD)
-            rst.append("  :Type: %(type)s" % info, AD)
+            rst.append("  :Default: {default}".format(**info), AD)
+            rst.append("  :Type: {type}".format(**info), AD)
             rst.append("", AD)
 
         self.headline(rst, "Sample configuration", "-")

nose2/tests/functional/support/scenario/pretty_asserts/ignore_passing/test_prettyassert_ignore_passing.py

@@ -6,7 +6,7 @@ def test_failing_assert(self):
         x = True
         y = False
         # fmt: off
-        # flake8: noqa
+        # ruff: noqa
         assert x; assert y
         # fmt: on
 

nose2/tests/unit/test_junitxml.py

@@ -90,7 +90,7 @@ def test_fail(self):
                 assert False
 
             def test_err(self):
-                1 / 0
+                1 / 0  # noqa: B018 useless expression
 
             def test_skip(self):
                 self.skipTest("skip")

nose2/tests/unit/test_layers_plugin.py

@@ -424,7 +424,7 @@ def test(self):
             self.plugin.startTestRun(event)
 
     def names(self, suite):
-        return [n for n in self.iternames(suite)]
+        return list(self.iternames(suite))
 
     def iternames(self, suite):
         for t in suite:
@@ -434,7 +434,7 @@ def iternames(self, suite):
                 test_method = t._testMethodName
                 yield f"{test_method} ({test_module}.{test_class})"
             else:
-                yield [n for n in self.iternames(t)]
+                yield list(self.iternames(t))
 
     def _listset(self, lst):
         n = set()

nose2/tests/unit/test_testid_plugin.py

@@ -50,8 +50,8 @@ def test___init__(self):
             self.assertEqual(
                 val,
                 exp_val,
-                "Attribute %s should have value "
-                "'%s', but has value %s" % (name, exp_val, val),
+                "Attribute {} should have value "
+                "'{}', but has value {}".format(name, exp_val, val),
             )
 
     def test_start_test(self):

pyproject.toml

@@ -0,0 +1,80 @@
+[tool.ruff]
+select = [
+  "B",       # flake8-bugbear
+  "C4",      # flake8-comprehensions
+  "C90",     # McCabe cyclomatic complexity
+  "E",       # pycodestyle
+  "EXE",     # flake8-executable
+  "F",       # Pyflakes
+  "I",       # isort
+  "ICN",     # flake8-import-conventions
+  "INT",     # flake8-gettext
+  "PLE",     # Pylint errors
+  "PLR091",  # Pylint Refactor just for max-args, max-branches, etc.
+  "PYI",     # flake8-pyi
+  "RSE",     # flake8-raise
+  "RUF",     # Ruff-specific rules
+  "TCH",     # flake8-type-checking
+  "TID",     # flake8-tidy-imports
+  "UP",      # pyupgrade
+  "W",       # pycodestyle
+  "YTT",     # flake8-2020
+  # "A",     # flake8-builtins
+  # "ANN",   # flake8-annotations
+  # "ARG",   # flake8-unused-arguments
+  # "BLE",   # flake8-blind-except
+  # "COM",   # flake8-commas
+  # "D",     # pydocstyle
+  # "DJ",    # flake8-django
+  # "DTZ",   # flake8-datetimez
+  # "EM",    # flake8-errmsg
+  # "ERA",   # eradicate
+  # "FBT",   # flake8-boolean-trap
+  # "G",     # flake8-logging-format
+  # "INP",   # flake8-no-pep420
+  # "ISC",   # flake8-implicit-str-concat
+  # "N",     # pep8-naming
+  # "NPY",   # NumPy-specific rules
+  # "PD",    # pandas-vet
+  # "PGH",   # pygrep-hooks
+  # "PIE",   # flake8-pie
+  # "PT",    # flake8-pytest-style
+  # "PTH",   # flake8-use-pathlib
+  # "Q",     # flake8-quotes
+  # "RET",   # flake8-return
+  # "S",     # flake8-bandit
+  # "SIM",   # flake8-simplify
+  # "SLF",   # flake8-self
+  # "T10",   # flake8-debugger
+  # "T20",   # flake8-print
+  # "TRY",   # tryceratops
+]
+ignore = [
+  "B904",
+  "RUF005",
+  "RUF100"
+]
+target-version = "py37"
+
+[tool.ruff.isort]
+known-third-party = [
+  "coverage",
+  "mock",
+  "six",
+]
+
+[tool.ruff.mccabe]
+max-complexity = 15
+
+[tool.ruff.pylint]
+max-args = 9
+max-branches = 15
+max-statements = 66
+
+[tool.ruff.per-file-ignores]
+"nose2/tests/*" = ["B011"]
+# FIXME: resolving these could change behavior -- do it in a separate
+#        cleanup and note it in the changelog
+"nose2/plugins/loader/*.py" = ["B004"]
+"nose2/plugins/mp.py" = ["UP031"]
+"nose2/tests/functional/support/such/test_regression_same_havings.py" = ["EXE001"]