Bump Ruff to 0.12.9, update regexes for new output rendering

pyproject.toml

@@ -34,7 +34,7 @@ classifiers = [
     "Topic :: Software Development :: Libraries :: Python Modules",
 ]
 requires-python = ">=3.8"
-dependencies = ["pytest>=7", "black>=23", "ruff>=0.5.0"]
+dependencies = ["pytest>=7", "black>=23", "ruff>=0.12.9"]
 
 [project.entry-points.pytest11]
 examples = "pytest_examples"

pytest_examples/lint.py

@@ -57,9 +57,9 @@ def ruff_check(
 
         def replace_offset(m: re.Match[str]):
             line_number = int(m.group(1))
-            return f'{example.path}:{line_number + example.start_line}'
+            return f' --> {example.path}:{line_number + example.start_line}'
 
-        output = re.sub(r'^-:(\d+)', replace_offset, stdout, flags=re.M)
+        output = re.sub(r'^ --> -:(\d+)', replace_offset, stdout, flags=re.M)
         raise FormatError(f'ruff failed:\n{indent(output, "  ")}')
     elif p.returncode != 0:
         raise RuntimeError(f'Error running ruff, return code {p.returncode}:\n{stderr or stdout}')

tests/test_lint.py

@@ -24,11 +24,11 @@ def test_ruff_config():
 def test_ruff_offset():
     code = 'print(x)\n'
     example = CodeExample.create(code)
-    with pytest.raises(FormatError, match='testing.md:1:7: F821 Undefined name'):
+    with pytest.raises(FormatError, match='F821 Undefined name `x`\n   --> testing.md:1:7'):
         ruff_check(example, ExamplesConfig())
 
     example = CodeExample.create(code, start_line=10)
-    with pytest.raises(FormatError, match='testing.md:11:7: F821 Undefined name'):
+    with pytest.raises(FormatError, match='F821 Undefined name `x`\n   --> testing.md:11:7'):
         ruff_check(example, ExamplesConfig())
 
 

tests/test_run_examples.py

@@ -111,8 +111,8 @@ def test_find_run_examples(example: CodeExample, eval_example: EvalExample):
         '=== FAILURES ===\n',
         '___ test_find_run_examples[my_file.md:1-4] ___\n',
         'ruff failed:\n',
-        '  my_file.md:2:8: F401 [*] `sys` imported but unused\n',
-        '  my_file.md:3:7: F821 Undefined name `missing`\n',
+        '  F401 [*] `sys` imported but unused\n   --> my_file.md:2:8\n',
+        '  F821 Undefined name `missing`\n   --> my_file.md:3:7\n',
         '  Found 2 errors.\n',
         '  [*] 1 fixable with the `--fix` option.\n',
         '=== short test summary info ===\n',