List all the fixable rules in CLI via --list-rules (#3737)

.github/workflows/tox.yml

@@ -71,7 +71,7 @@ jobs:
       WSLENV: FORCE_COLOR:PYTEST_REQPASS:TOXENV:GITHUB_STEP_SUMMARY
       # Number of expected test passes, safety measure for accidental skip of
       # tests. Update value if you add/remove tests.
-      PYTEST_REQPASS: 826
+      PYTEST_REQPASS: 827
     steps:
       - name: Activate WSL1
         if: "contains(matrix.shell, 'wsl')"

src/ansiblelint/generate_docs.py

@@ -9,7 +9,7 @@
 
 from ansiblelint.config import PROFILES
 from ansiblelint.constants import RULE_DOC_URL
-from ansiblelint.rules import RulesCollection
+from ansiblelint.rules import RulesCollection, TransformMixin
 
 DOC_HEADER = """
 # Default Rules
@@ -27,6 +27,8 @@ def rules_as_str(rules: RulesCollection) -> RenderableType:
     """Return rules as string."""
     table = Table(show_header=False, header_style="title", box=box.SIMPLE)
     for rule in rules.alphabetical():
+        if issubclass(rule.__class__, TransformMixin):
+            rule.tags.insert(0, "autofix")
         tag = f"[dim] ({', '.join(rule.tags)})[/dim]" if rule.tags else ""
         table.add_row(
             f"[link={RULE_DOC_URL}{rule.id}/]{rule.id}[/link]",

test/test_list_rules.py

@@ -18,6 +18,13 @@ def test_list_rules_includes_opt_in_rules(project_path: Path) -> None:
     assert ("opt-in" in result_list_rules.stdout) is True
 
 
+def test_list_rules_includes_autofix() -> None:
+    """Checks that listing rules also includes the autofix label for applicable rules."""
+    result_list_rules = run_ansible_lint("--list-rules")
+
+    assert ("autofix" in result_list_rules.stdout) is True
+
+
 @pytest.mark.parametrize(
     ("result", "returncode", "format_string"),
     (