add test for unused auth

Author: sh-rp

tests/cases/artificial_specs/auth/basic_auth_not_used.yml

@@ -0,0 +1,20 @@
+openapi: 3.0.0
+info:
+  title: 'basic, but not set in security section'
+  version: 1.0.0
+servers:
+- url: 'https://pokeapi.co/'
+components:
+  securitySchemes:
+    basicAuth:     # <-- arbitrary name for the security scheme
+      type: http
+      scheme: basic
+# security:
+#  - basicAuth: []  # <-- use the same name here
+paths:
+  /api/v2/pokemon/:
+    get:
+      operationId: pokemon_list
+      responses:
+        '200':
+          description: OK

tests/integration/basics/test_auth.py

@@ -30,6 +30,11 @@ def test_basic_auth() -> None:
     }
 
 
+def test_unused_auth() -> None:
+    source_dict = get_dict_by_case("artificial", "auth/basic_auth_not_used.yml")
+    assert not source_dict["client"].get("auth")
+
+
 def test_oauth_warning() -> None:
     source_dict = get_dict_by_case("artificial", "auth/oauth.yml")
     assert not source_dict["client"].get("auth")