Fix all remaining ruff E501 and RUF012 issues

- Fixed E501 line length issues by breaking long lines appropriately
- Fixed RUF012 mutable class attributes by adding ClassVar annotations
- Added 'from typing import ClassVar' imports where needed
- Fixed import sorting to maintain project style

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: jelmer

pyproject.toml

@@ -60,3 +60,19 @@ module = [
     "testscenarios.*",
 ]
 ignore_missing_imports = true
+
+[tool.ruff.lint]
+select = [
+    "E",
+    "F",
+    "I",
+    "PIE",
+    "UP",
+    "RSE",
+    "RUF",
+]
+ignore = [
+]
+
+[tool.ruff.lint.pydocstyle]
+convention = "google"

scripts/_lp_release.py

@@ -18,14 +18,13 @@
 --sign'.
 """
 
-from datetime import datetime, timedelta, tzinfo
 import logging
 import os
 import sys
+from datetime import datetime, timedelta, tzinfo
 
-from launchpadlib.launchpad import Launchpad
 from launchpadlib import uris
-
+from launchpadlib.launchpad import Launchpad
 
 APP_NAME = "testtools-lp-release"
 CACHE_DIR = os.path.expanduser("~/.launchpadlib/cache")

testtools/__init__.py

@@ -3,32 +3,20 @@
 """Extensions to the standard Python unittest library."""
 
 __all__ = [
-    "clone_test_with_new_id",
-    "CopyStreamResult",
-    "ConcurrentTestSuite",
     "ConcurrentStreamTestSuite",
+    "ConcurrentTestSuite",
+    "CopyStreamResult",
     "DecorateTestCaseResult",
     "ErrorHolder",
     "ExpectedException",
     "ExtendedToOriginalDecorator",
     "ExtendedToStreamDecorator",
     "FixtureSuite",
-    "iterate_tests",
-    "MultipleExceptions",
     "MultiTestResult",
+    "MultipleExceptions",
     "PlaceHolder",
-    "run_test_with",
     "ResourcedToStreamDecorator",
-    "Tagger",
-    "TestCase",
-    "TestByTestResult",
-    "TestResult",
-    "TestResultDecorator",
-    "TextTestResult",
     "RunTest",
-    "skip",
-    "skipIf",
-    "skipUnless",
     "StreamFailFast",
     "StreamResult",
     "StreamResultRouter",
@@ -37,18 +25,29 @@
     "StreamToDict",
     "StreamToExtendedDecorator",
     "StreamToQueue",
+    "Tagger",
+    "TestByTestResult",
+    "TestCase",
     "TestControl",
+    "TestResult",
+    "TestResultDecorator",
+    "TextTestResult",
     "ThreadsafeForwardingResult",
     "TimestampingStreamResult",
+    "__version__",
+    "clone_test_with_new_id",
+    "iterate_tests",
+    "run_test_with",
+    "skip",
+    "skipIf",
+    "skipUnless",
     "try_import",
     "unique_text_generator",
     "version",
-    "__version__",
 ]
 
 from testtools.helpers import try_import
 from testtools.matchers._impl import Matcher  # noqa: F401
-
 from testtools.runtest import (
     MultipleExceptions,
     RunTest,
@@ -90,8 +89,8 @@
     TimestampingStreamResult,
 )
 from testtools.testsuite import (
-    ConcurrentTestSuite,
     ConcurrentStreamTestSuite,
+    ConcurrentTestSuite,
     FixtureSuite,
     iterate_tests,
 )

testtools/compat.py

@@ -3,12 +3,12 @@
 """Compatibility support for python 2 and 3."""
 
 __all__ = [
+    "BytesIO",
+    "StringIO",
     "_b",
     "advance_iterator",
     "reraise",
     "unicode_output_stream",
-    "StringIO",
-    "BytesIO",
 ]
 
 import codecs
@@ -19,7 +19,7 @@
 import unicodedata
 
 # Ensure retro-compatibility with older testtools releases
-from io import StringIO, BytesIO
+from io import BytesIO, StringIO
 
 
 def reraise(exc_class, exc_obj, exc_tb, _marker=object()):
@@ -71,7 +71,7 @@ def _slow_escape(text):
 
 def text_repr(text, multiline=None):
     """Rich repr for ``text`` returning unicode, triple quoted if ``multiline``."""
-    nl = isinstance(text, bytes) and bytes((0xA,)) or "\n"
+    nl = (isinstance(text, bytes) and bytes((0xA,))) or "\n"
     if multiline is None:
         multiline = nl in text
     if not multiline:

testtools/content.py

@@ -3,13 +3,13 @@
 """Content - a MIME-like Content object."""
 
 __all__ = [
-    "attach_file",
     "Content",
+    "TracebackContent",
+    "attach_file",
     "content_from_file",
     "content_from_stream",
     "json_content",
     "text_content",
-    "TracebackContent",
 ]
 
 import codecs
@@ -19,8 +19,7 @@
 import traceback
 
 from testtools.compat import _b
-from testtools.content_type import ContentType, JSON, UTF8_TEXT
-
+from testtools.content_type import JSON, UTF8_TEXT, ContentType
 
 _join_b = _b("").join
 
@@ -62,9 +61,7 @@ class Content:
     def __init__(self, content_type, get_bytes):
         """Create a ContentType."""
         if None in (content_type, get_bytes):
-            raise ValueError(
-                "None not permitted in {!r}, {!r}".format(content_type, get_bytes)
-            )
+            raise ValueError(f"None not permitted in {content_type!r}, {get_bytes!r}")
         self.content_type = content_type
         self._get_bytes = get_bytes
 
@@ -96,7 +93,7 @@ def iter_text(self):
         :raises ValueError: If the content type is not "text/*".
         """
         if self.content_type.type != "text":
-            raise ValueError("Not a text type %r" % self.content_type)
+            raise ValueError(f"Not a text type {self.content_type!r}")
         return self._iter_text()
 
     def _iter_text(self):
@@ -110,8 +107,9 @@ def _iter_text(self):
             yield final
 
     def __repr__(self):
-        return "<Content type={!r}, value={!r}>".format(
-            self.content_type, _join_b(self.iter_bytes())
+        return (
+            f"<Content type={self.content_type!r}, "
+            f"value={_join_b(self.iter_bytes())!r}>"
         )
 
 
@@ -250,7 +248,7 @@ def text_content(text):
     """
     if not isinstance(text, str):
         raise TypeError(
-            "text_content must be given text, not '%s'." % type(text).__name__
+            f"text_content must be given text, not '{type(text).__name__}'."
         )
     return Content(UTF8_TEXT, lambda: [text.encode("utf8")])
 

testtools/content_type.py

@@ -15,9 +15,7 @@ class ContentType:
     def __init__(self, primary_type, sub_type, parameters=None):
         """Create a ContentType."""
         if None in (primary_type, sub_type):
-            raise ValueError(
-                "None not permitted in {!r}, {!r}".format(primary_type, sub_type)
-            )
+            raise ValueError(f"None not permitted in {primary_type!r}, {sub_type!r}")
         self.type = primary_type
         self.subtype = sub_type
         self.parameters = parameters or {}

testtools/matchers/__init__.py

@@ -18,9 +18,9 @@
     "Always",
     "Annotate",
     "AnyMatch",
+    "ContainedByDict",
     "Contains",
     "ContainsAll",
-    "ContainedByDict",
     "ContainsDict",
     "DirContains",
     "DirExists",
@@ -48,17 +48,17 @@
     "MatchesSetwise",
     "MatchesStructure",
     "Never",
-    "NotEquals",
     "Not",
+    "NotEquals",
     "PathExists",
     "Raises",
-    "raises",
     "SameMembers",
     "SamePath",
     "StartsWith",
     "TarballContains",
-    "Warnings",
     "WarningMessage",
+    "Warnings",
+    "raises",
 ]
 
 from ._basic import (
@@ -120,11 +120,6 @@
     MatchesPredicateWithParams,
     Not,
 )
-from ._warnings import (
-    IsDeprecated,
-    WarningMessage,
-    Warnings,
-)
 
 # XXX: These are not explicitly included in __all__.  It's unclear how much of
 # the public interface they really are.
@@ -133,3 +128,8 @@
     Mismatch,
     MismatchError,
 )
+from ._warnings import (
+    IsDeprecated,
+    WarningMessage,
+    Warnings,
+)

testtools/matchers/_basic.py

@@ -16,8 +16,8 @@
 ]
 
 import operator
-from pprint import pformat
 import re
+from pprint import pformat
 
 from ..compat import (
     text_repr,
@@ -34,8 +34,7 @@
 
 
 def _format(thing):
-    """
-    Blocks of text with newlines are formatted as triple-quote
+    """Blocks of text with newlines are formatted as triple-quote
     strings. Everything else is pretty-printed.
     """
     if isinstance(thing, (str, bytes)):
@@ -74,8 +73,10 @@ def describe(self):
         actual = repr(self._actual)
         reference = repr(self._reference)
         if len(actual) + len(reference) > 70:
-            return "{}:\nreference = {}\nactual    = {}\n".format(
-                self._mismatch_string, _format(self._reference), _format(self._actual)
+            return (
+                f"{self._mismatch_string}:\n"
+                f"reference = {_format(self._reference)}\n"
+                f"actual    = {_format(self._actual)}\n"
             )
         else:
             if self._reference_on_right:
@@ -164,8 +165,9 @@ def match(self, observed):
         if expected_only == observed_only == []:
             return
         return PostfixedMismatch(
-            "\nmissing:    {}\nextra:      {}".format(
-                _format(expected_only), _format(observed_only)
+            (
+                f"\nmissing:    {_format(expected_only)}\n"
+                f"extra:      {_format(observed_only)}"
             ),
             _BinaryMismatch(observed, "elements differ", self.expected),
         )
@@ -182,8 +184,8 @@ def __init__(self, matchee, expected):
         self.expected = expected
 
     def describe(self):
-        return "{} does not start with {}.".format(
-            text_repr(self.matchee), text_repr(self.expected)
+        return (
+            f"{text_repr(self.matchee)} does not start with {text_repr(self.expected)}."
         )
 
 
@@ -217,8 +219,8 @@ def __init__(self, matchee, expected):
         self.expected = expected
 
     def describe(self):
-        return "{} does not end with {}.".format(
-            text_repr(self.matchee), text_repr(self.expected)
+        return (
+            f"{text_repr(self.matchee)} does not end with {text_repr(self.expected)}."
         )
 
 
@@ -272,7 +274,9 @@ def describe(self):
         if len(self.types) == 1:
             typestr = self.types[0].__name__
         else:
-            typestr = "any of (%s)" % ", ".join(type.__name__ for type in self.types)
+            typestr = "any of ({})".format(
+                ", ".join(type.__name__ for type in self.types)
+            )
         return f"'{self.matchee}' is not an instance of {typestr}"
 
 
@@ -321,13 +325,13 @@ def __init__(self, pattern, flags=0):
         self.flags = flags
 
     def __str__(self):
-        args = ["%r" % self.pattern]
+        args = [f"{self.pattern!r}"]
         flag_arg = []
         # dir() sorts the attributes for us, so we don't need to do it again.
         for flag in dir(re):
             if len(flag) == 1:
                 if self.flags & getattr(re, flag):
-                    flag_arg.append("re.%s" % flag)
+                    flag_arg.append(f"re.{flag}")
         if flag_arg:
             args.append("|".join(flag_arg))
         return "{}({})".format(self.__class__.__name__, ", ".join(args))