test: ensure every Renovate preset is validated

.cicd/hooks/check-json-in-config.py

@@ -0,0 +1,36 @@
+#!/usr/bin/env python3
+import sys
+import pathlib
+
+ROOT = pathlib.Path(__file__).resolve().parent.parent.parent
+CONFIG_FILE = ROOT / ".pre-commit-config.yaml"
+
+
+def main(argv: list[str]) -> int:
+    if not CONFIG_FILE.exists():
+        print(".pre-commit-config.yaml not found in repo root")
+        return 1
+
+    config_text = CONFIG_FILE.read_text()
+
+    missing = []
+    for file_arg in argv:
+        path = pathlib.Path(file_arg)
+
+        # only care about JSONs in repo root
+        if path.suffix == ".json" and path.parent.resolve() == ROOT:
+            print(f"Checking {path.name}...", flush=True)
+            if path.name not in config_text:
+                missing.append(path.name)
+
+    if missing:
+        print("\nThese JSON files are missing from .pre-commit-config.yaml:")
+        for m in missing:
+            print(f"   - {m}")
+        return 1
+
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main(sys.argv[1:]))

.pre-commit-config.yaml

@@ -3,6 +3,13 @@
 # See https://pre-commit.com/hooks.html for more hooks
 
 repos:
+  - repo: local
+    hooks:
+      - id: check-json-in-config
+        name: Check Renovate presets are listed in pre-commit-config.yaml
+        entry: .cicd/hooks/check-json-in-config.py
+        language: python
+        types: [json]
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v6.0.0
     hooks:
@@ -31,6 +38,7 @@ repos:
                (^|/).?renovate(?:rc)?(?:\.json5?)?$|
                default.json|
                copier.json|
+               groupManager.json|
                pre-commit.json|
                monthly.json|
                weekly.json|