fix lint

Author: karpetrosyan

hishel/beta/_core/_headers.py

@@ -218,7 +218,7 @@ def http_unquote(raw: str) -> tuple[int, str]:
     if not raw or raw[0] != '"':
         return -1, ""
 
-    buf = []
+    buf: list[str] = []
     i = 1  # Start after opening quote
 
     while i < len(raw):
@@ -359,7 +359,7 @@ class CacheControl:
         - List[str]: directive present with specific field names
     """
 
-    def __init__(self):
+    def __init__(self) -> None:
         # Common directives
         self.max_age: Optional[int] = None
         self.no_store: bool = False
@@ -590,7 +590,7 @@ def handle_directive_without_value(cc: CacheControl, token: str) -> None:
         cc.extensions.append(token)
 
 
-def parse_cache_control(value: str) -> CacheControl:
+def parse_cache_control(value: str | None) -> CacheControl:
     """
     Parse a Cache-Control header from either a request or response.
 
@@ -631,4 +631,6 @@ def parse_cache_control(value: str) -> CacheControl:
         >>> cc.stale_while_revalidate
         86400
     """
+    if value is None:
+        return CacheControl()
     return parse(value)

tests/beta/_core/test_headers.py

@@ -169,12 +169,14 @@ def test_no_cache_with_multiple_fields(self):
     def test_no_cache_field_canonicalization(self):
         """Field names should be canonicalized to Title-Case."""
         cc = parse_cache_control('no-cache="set-cookie, authorization"')
+        assert isinstance(cc.no_cache, list)
         assert "Set-Cookie" in cc.no_cache
         assert "Authorization" in cc.no_cache
 
     def test_no_cache_with_whitespace(self):
         """no-cache with whitespace around field names."""
         cc = parse_cache_control('no-cache=" Set-Cookie , Authorization "')
+        assert isinstance(cc.no_cache, list)
         assert "Set-Cookie" in cc.no_cache
         assert "Authorization" in cc.no_cache
 
@@ -203,6 +205,7 @@ def test_private_with_multiple_fields(self):
     def test_private_field_canonicalization(self):
         """Field names should be canonicalized."""
         cc = parse_cache_control('private="x-custom-header"')
+        assert isinstance(cc.private, list)
         assert "X-Custom-Header" in cc.private
 
 
@@ -308,6 +311,7 @@ class TestQuotedValues:
     def test_quoted_field_names(self):
         """Quoted field names in no-cache."""
         cc = parse_cache_control('no-cache="Set-Cookie"')
+        assert isinstance(cc.no_cache, list)
         assert "Set-Cookie" in cc.no_cache
 
     def test_quoted_extension_value(self):