Use black to format hassfest generated files (#78794)

script/hassfest/ssdp.py

@@ -1,10 +1,12 @@
 """Generate ssdp file."""
 from __future__ import annotations
 
-from collections import OrderedDict, defaultdict
-import json
+from collections import defaultdict
+
+import black
 
 from .model import Config, Integration
+from .serializer import to_string
 
 BASE = """
 \"\"\"Automatically generated by hassfest.
@@ -12,15 +14,13 @@ BASE = """
 To update, run python3 -m script.hassfest
 \"\"\"
 
-# fmt: off
-
 SSDP = {}
 """.strip()
 
 
 def sort_dict(value):
     """Sort a dictionary."""
-    return OrderedDict((key, value[key]) for key in sorted(value))
+    return {key: value[key] for key in sorted(value)}
 
 
 def generate_and_validate(integrations: dict[str, Integration]):
@@ -42,7 +42,7 @@ def generate_and_validate(integrations: dict[str, Integration]):
         for matcher in ssdp:
             data[domain].append(sort_dict(matcher))
 
-    return BASE.format(json.dumps(data, indent=4))
+    return black.format_str(BASE.format(to_string(data)), mode=black.Mode())
 
 
 def validate(integrations: dict[str, Integration], config: Config):
@@ -54,7 +54,7 @@ def validate(integrations: dict[str, Integration], config: Config):
         return
 
     with open(str(ssdp_path)) as fp:
-        if fp.read().strip() != content:
+        if fp.read() != content:
             config.add_error(
                 "ssdp",
                 "File ssdp.py is not up to date. Run python3 -m script.hassfest",
@@ -67,4 +67,4 @@ def generate(integrations: dict[str, Integration], config: Config):
     """Generate ssdp file."""
     ssdp_path = config.root / "homeassistant/generated/ssdp.py"
     with open(str(ssdp_path), "w") as fp:
-        fp.write(f"{config.cache['ssdp']}\n")
+        fp.write(f"{config.cache['ssdp']}")