chore: 🤖 tweak oidc attributes serialization

addons/api/tests/unit/serializers/auth-method-test.js

@@ -47,6 +47,13 @@ module('Unit | Serializer | auth method', function (hooks) {
           { value: 'certificate-1234' },
           { value: 'certificate-5678' },
         ],
+        api_url_prefix: 'protocol://host:port/foo',
+        client_id: 'id123',
+        client_secret: 'secret456',
+        disable_discovered_config_validation: true,
+        dry_run: true,
+        issuer: 'http://www.example.net',
+        max_age: 500,
       },
     });
 
@@ -62,15 +69,13 @@ module('Unit | Serializer | auth method', function (hooks) {
         signing_algorithms: ['RS256', 'RS384'],
         allowed_audiences: ['www.alice.com', 'www.alice.com/admin'],
         idp_ca_certs: ['certificate-1234', 'certificate-5678'],
-        api_url_prefix: null,
-        callback_url: null,
-        client_id: null,
-        client_secret: null,
-        client_secret_hmac: null,
-        disable_discovered_config_validation: false,
-        dry_run: false,
-        issuer: null,
-        max_age: null,
+        api_url_prefix: 'protocol://host:port/foo',
+        client_id: 'id123',
+        client_secret: 'secret456',
+        disable_discovered_config_validation: true,
+        dry_run: true,
+        issuer: 'http://www.example.net',
+        max_age: 500,
       },
     });
   });