Remove the default argument to all uses of getlist in Sanic in case none are found. Previously it defaulted to returning None. Instead return an empty list which is sensible and avoids ambiguity with return types.

Co-authored-by: Adam Hopkins <adam@amhopkins.com>

sanic/cookies/request.py

@@ -149,13 +149,11 @@ class CookieRequestParameters(RequestParameters):
         except KeyError:
             return super().get(name, default)
 
-    def getlist(
-        self, name: str, default: Optional[Any] = None
-    ) -> Optional[Any]:
+    def getlist(self, name: str) -> list[Any]:
         try:
             return self._get_prefixed_cookie(name)
         except KeyError:
-            return super().getlist(name, default)
+            return super().getlist(name)
 
     def _get_prefixed_cookie(self, name: str) -> Any:
         getitem = super().__getitem__

sanic/request/parameters.py

@@ -19,15 +19,14 @@ class RequestParameters(dict):
         return super().get(name, [default])[0]
 
     def getlist(
-        self, name: str, default: Optional[Any] = None
-    ) -> Optional[Any]:
+        self, name: str
+    ) -> list[Any]:
         """Return the entire list
 
         Args:
             name (str): The name of the parameter
-            default (Optional[Any], optional): The default value. Defaults to None.
 
         Returns:
-            Optional[Any]: The entire list
+            list[Any]: The entire list of values or [] if not found
         """  # noqa: E501
-        return super().get(name, default)
+        return super().get(name) or []

tests/test_cookies.py

@@ -445,10 +445,10 @@ def test_cookie_accessors(app: Sanic):
                     "four": request.cookies.get("four", "fallback"),
                 },
                 "getlist": {
-                    "one": request.cookies.getlist("one", ["fallback"]),
-                    "two": request.cookies.getlist("two", ["fallback"]),
-                    "three": request.cookies.getlist("three", ["fallback"]),
-                    "four": request.cookies.getlist("four", ["fallback"]),
+                    "one": request.cookies.getlist("one"),
+                    "two": request.cookies.getlist("two"),
+                    "three": request.cookies.getlist("three"),
+                    "four": request.cookies.getlist("four"),
                 },
                 "getattr": {
                     "one": request.cookies.one,
@@ -484,7 +484,7 @@ def test_cookie_accessors(app: Sanic):
             "one": ["1"],
             "two": ["2"],
             "three": ["3"],
-            "four": ["fallback"],
+            "four": [],
         },
         "getattr": {
             "one": "1",

tests/test_response.py

@@ -20,6 +20,7 @@ from pytest import LogCaptureFixture
 
 from sanic import Request, Sanic
 from sanic.compat import Header
+from sanic.constants import DEFAULT_HTTP_CONTENT_TYPE
 from sanic.cookies import CookieJar
 from sanic.response import (
     HTTPResponse,
@@ -545,7 +546,7 @@ def test_raw_response(app):
         return raw(b"raw_response")
 
     request, response = app.test_client.get("/test")
-    assert response.content_type == "application/octet-stream"
+    assert response.content_type == DEFAULT_HTTP_CONTENT_TYPE
     assert response.body == b"raw_response"
 
 

tests/test_routes.py

@@ -502,7 +502,7 @@ def test_dynamic_route_int(app):
 
     request, response = app.test_client.get("/folder/12345")
     assert response.text == "OK"
-    assert type(results[0]) is int
+    assert isinstance(results[0], int)
 
     request, response = app.test_client.get("/folder/asdf")
     assert response.status == 404
@@ -518,7 +518,7 @@ def test_dynamic_route_number(app):
 
     request, response = app.test_client.get("/weight/12345")
     assert response.text == "OK"
-    assert type(results[0]) is float
+    assert isinstance(results[0], float)
 
     request, response = app.test_client.get("/weight/1234.56")
     assert response.status == 200
@@ -567,7 +567,7 @@ def test_dynamic_route_uuid(app):
     url = "/quirky/123e4567-e89b-12d3-a456-426655440000"
     request, response = app.test_client.get(url)
     assert response.text == "OK"
-    assert type(results[0]) is uuid.UUID
+    assert isinstance(results[0], uuid.UUID)
 
     generated_uuid = uuid.uuid4()
     request, response = app.test_client.get(f"/quirky/{generated_uuid}")
@@ -861,7 +861,7 @@ def test_dynamic_add_route_int(app):
 
     request, response = app.test_client.get("/folder/12345")
     assert response.text == "OK"
-    assert type(results[0]) is int
+    assert isinstance(results[0], int)
 
     request, response = app.test_client.get("/folder/asdf")
     assert response.status == 404
@@ -878,7 +878,7 @@ def test_dynamic_add_route_number(app):
 
     request, response = app.test_client.get("/weight/12345")
     assert response.text == "OK"
-    assert type(results[0]) is float
+    assert isinstance(results[0], float)
 
     request, response = app.test_client.get("/weight/1234.56")
     assert response.status == 200