Use latest Python version by default in tests (#6448)

## Summary

Use the same Python version by default for all tests (our
latest-supported version).

## Test Plan

`cargo test`

---------

Co-authored-by: Zanie <[email protected]>

Author: charliermarsh

crates/ruff/src/rules/flake8_bugbear/mod.rs

@@ -11,7 +11,6 @@ mod tests {
 
     use crate::assert_messages;
     use crate::registry::Rule;
-    use crate::settings::types::PythonVersion;
     use crate::settings::Settings;
     use crate::test::test_path;
 
@@ -65,8 +64,7 @@ mod tests {
         let snapshot = "B905.py";
         let diagnostics = test_path(
             Path::new("flake8_bugbear").join(snapshot).as_path(),
-            &Settings::for_rule(Rule::ZipWithoutExplicitStrict)
-                .with_target_version(PythonVersion::latest()),
+            &Settings::for_rule(Rule::ZipWithoutExplicitStrict),
         )?;
         assert_messages!(snapshot, diagnostics);
         Ok(())
@@ -84,7 +82,7 @@ mod tests {
                         "fastapi.Query".to_string(),
                     ],
                 },
-                ..Settings::for_rules(vec![Rule::FunctionCallInDefaultArgument])
+                ..Settings::for_rule(Rule::FunctionCallInDefaultArgument)
             },
         )?;
         assert_messages!(snapshot, diagnostics);

crates/ruff/src/rules/flake8_pyi/snapshots/ruff__rules__flake8_pyi__tests__PYI050_PYI050.py.snap

@@ -1,4 +1,25 @@
 ---
 source: crates/ruff/src/rules/flake8_pyi/mod.rs
 ---
+PYI050.py:13:24: PYI050 Prefer `typing.Never` over `NoReturn` for argument annotations
+   |
+13 | def foo_no_return(arg: NoReturn):
+   |                        ^^^^^^^^ PYI050
+14 |     ...
+   |
+
+PYI050.py:23:44: PYI050 Prefer `typing.Never` over `NoReturn` for argument annotations
+   |
+23 | def foo_no_return_kwarg(arg: int, *, arg2: NoReturn):
+   |                                            ^^^^^^^^ PYI050
+24 |     ...
+   |
+
+PYI050.py:27:47: PYI050 Prefer `typing.Never` over `NoReturn` for argument annotations
+   |
+27 | def foo_no_return_pos_only(arg: int, /, arg2: NoReturn):
+   |                                               ^^^^^^^^ PYI050
+28 |     ...
+   |
+
 

crates/ruff/src/rules/flake8_pyi/snapshots/ruff__rules__flake8_pyi__tests__PYI050_PYI050.pyi.snap

@@ -1,7 +1,7 @@
 ---
 source: crates/ruff/src/rules/flake8_pyi/mod.rs
 ---
-PYI050.pyi:6:24: PYI050 Prefer `typing_extensions.Never` over `NoReturn` for argument annotations
+PYI050.pyi:6:24: PYI050 Prefer `typing.Never` over `NoReturn` for argument annotations
   |
 4 | def foo(arg): ...
 5 | def foo_int(arg: int): ...
@@ -11,7 +11,7 @@ PYI050.pyi:6:24: PYI050 Prefer `typing_extensions.Never` over `NoReturn` for arg
 8 |     arg: typing_extensions.NoReturn,
   |
 
-PYI050.pyi:10:44: PYI050 Prefer `typing_extensions.Never` over `NoReturn` for argument annotations
+PYI050.pyi:10:44: PYI050 Prefer `typing.Never` over `NoReturn` for argument annotations
    |
  8 |     arg: typing_extensions.NoReturn,
  9 | ): ...  # Error: PYI050
@@ -21,7 +21,7 @@ PYI050.pyi:10:44: PYI050 Prefer `typing_extensions.Never` over `NoReturn` for ar
 12 | def foo_never(arg: Never): ...
    |
 
-PYI050.pyi:11:47: PYI050 Prefer `typing_extensions.Never` over `NoReturn` for argument annotations
+PYI050.pyi:11:47: PYI050 Prefer `typing.Never` over `NoReturn` for argument annotations
    |
  9 | ): ...  # Error: PYI050
 10 | def foo_no_return_kwarg(arg: int, *, arg2: NoReturn): ...  # Error: PYI050

crates/ruff/src/rules/flake8_use_pathlib/mod.rs

@@ -12,7 +12,6 @@ mod tests {
     use crate::assert_messages;
     use crate::registry::Rule;
     use crate::settings;
-    use crate::settings::types::PythonVersion;
     use crate::test::test_path;
 
     #[test_case(Path::new("full_name.py"))]
@@ -49,8 +48,7 @@ mod tests {
                 Rule::OsPathSamefile,
                 Rule::OsPathSplitext,
                 Rule::BuiltinOpen,
-            ])
-            .with_target_version(PythonVersion::latest()),
+            ]),
         )?;
         assert_messages!(snapshot, diagnostics);
         Ok(())
@@ -69,7 +67,7 @@ mod tests {
         let snapshot = format!("{}_{}", rule_code.noqa_code(), path.to_string_lossy());
         let diagnostics = test_path(
             Path::new("flake8_use_pathlib").join(path).as_path(),
-            &settings::Settings::for_rule(rule_code).with_target_version(PythonVersion::latest()),
+            &settings::Settings::for_rule(rule_code),
         )?;
         assert_messages!(snapshot, diagnostics);
         Ok(())

crates/ruff/src/rules/isort/snapshots/ruff__rules__isort__tests__if_elif_else.py.snap

@@ -14,9 +14,8 @@ if_elif_else.py:6:1: I001 [*] Import block is un-sorted or un-formatted
 3 3 | elif "setuptools" in sys.modules:
 4 4 |     from setuptools.command.sdist import sdist as _sdist
 5 5 | else:
-6   |-    from setuptools.command.sdist import sdist as _sdist
-7 6 |     from distutils.command.sdist import sdist as _sdist
-  7 |+
-  8 |+    from setuptools.command.sdist import sdist as _sdist
+  6 |+    from distutils.command.sdist import sdist as _sdist
+6 7 |     from setuptools.command.sdist import sdist as _sdist
+7   |-    from distutils.command.sdist import sdist as _sdist
 
 

crates/ruff/src/rules/perflint/mod.rs

@@ -10,6 +10,7 @@ mod tests {
 
     use crate::assert_messages;
     use crate::registry::Rule;
+    use crate::settings::types::PythonVersion;
     use crate::settings::Settings;
     use crate::test::test_path;
 
@@ -22,7 +23,7 @@ mod tests {
         let snapshot = format!("{}_{}", rule_code.noqa_code(), path.to_string_lossy());
         let diagnostics = test_path(
             Path::new("perflint").join(path).as_path(),
-            &Settings::for_rule(rule_code),
+            &Settings::for_rule(rule_code).with_target_version(PythonVersion::Py310),
         )?;
         assert_messages!(snapshot, diagnostics);
         Ok(())

crates/ruff/src/rules/pylint/mod.rs

@@ -130,7 +130,7 @@ mod tests {
         let snapshot = format!("{}_{}", rule_code.noqa_code(), path.to_string_lossy());
         let diagnostics = test_path(
             Path::new("pylint").join(path).as_path(),
-            &Settings::for_rule(rule_code).with_target_version(PythonVersion::latest()),
+            &Settings::for_rule(rule_code),
         )?;
         assert_messages!(snapshot, diagnostics);
         Ok(())

crates/ruff/src/rules/pyupgrade/mod.rs

@@ -77,11 +77,12 @@ mod tests {
     #[test_case(Rule::UselessObjectInheritance, Path::new("UP004.py"))]
     #[test_case(Rule::YieldInForLoop, Path::new("UP028_0.py"))]
     #[test_case(Rule::YieldInForLoop, Path::new("UP028_1.py"))]
+    #[test_case(Rule::NonPEP695TypeAlias, Path::new("UP040.py"))]
     fn rules(rule_code: Rule, path: &Path) -> Result<()> {
         let snapshot = path.to_string_lossy().to_string();
         let diagnostics = test_path(
             Path::new("pyupgrade").join(path).as_path(),
-            &settings::Settings::for_rule(rule_code).with_target_version(PythonVersion::latest()),
+            &settings::Settings::for_rule(rule_code),
         )?;
         assert_messages!(snapshot, diagnostics);
         Ok(())
@@ -100,19 +101,6 @@ mod tests {
         Ok(())
     }
 
-    #[test]
-    fn non_pep695_type_alias_py312() -> Result<()> {
-        let diagnostics = test_path(
-            Path::new("pyupgrade/UP040.py"),
-            &settings::Settings {
-                target_version: PythonVersion::Py312,
-                ..settings::Settings::for_rule(Rule::NonPEP695TypeAlias)
-            },
-        )?;
-        assert_messages!(diagnostics);
-        Ok(())
-    }
-
     #[test]
     fn future_annotations_keep_runtime_typing_p37() -> Result<()> {
         let diagnostics = test_path(

crates/ruff/src/rules/pyupgrade/snapshots/ruff__rules__pyupgrade__tests__non_pep695_type_alias_py312.snap renamed to crates/ruff/src/rules/pyupgrade/snapshots/ruff__rules__pyupgrade__tests__UP040.py.snap

@@ -44,7 +44,7 @@ mod tests {
         let snapshot = format!("{}_{}", rule_code.noqa_code(), path.to_string_lossy());
         let diagnostics = test_path(
             Path::new("ruff").join(path).as_path(),
-            &settings::Settings::for_rule(rule_code).with_target_version(PythonVersion::latest()),
+            &settings::Settings::for_rule(rule_code),
         )?;
         assert_messages!(snapshot, diagnostics);
         Ok(())

crates/ruff/src/rules/ruff/mod.rs

@@ -298,13 +298,15 @@ impl Settings {
     pub fn for_rule(rule_code: Rule) -> Self {
         Self {
             rules: RuleTable::from_iter([rule_code]),
+            target_version: PythonVersion::latest(),
             ..Self::default()
         }
     }
 
     pub fn for_rules(rules: impl IntoIterator<Item = Rule>) -> Self {
         Self {
             rules: RuleTable::from_iter(rules),
+            target_version: PythonVersion::latest(),
             ..Self::default()
         }
     }

crates/ruff/src/settings/mod.rs

@@ -53,6 +53,7 @@ impl From<PythonVersion> for Pep440Version {
 }
 
 impl PythonVersion {
+    /// Return the latest supported Python version.
     pub const fn latest() -> Self {
         Self::Py312
     }