Fix onTokenRequest callback to use new interface

The createAuthServer onTokenRequest callback now passes an object with
authorizationHeader, body, timestamp etc. instead of (req, timestamp).
Also added missing return value for TokenRequestResult.

Author: pcarleton

src/scenarios/client/auth/token-endpoint-auth.ts

@@ -64,11 +64,8 @@ class TokenEndpointAuthScenario implements Scenario {
     const authApp = createAuthServer(this.checks, this.authServer.getUrl, {
       tokenVerifier,
       tokenEndpointAuthMethodsSupported: [this.expectedAuthMethod],
-      onTokenRequest: (req, timestamp) => {
-        const authorizationHeader = req.headers.authorization as
-          | string
-          | undefined;
-        const bodyClientSecret = req.body.client_secret;
+      onTokenRequest: ({ authorizationHeader, body, timestamp }) => {
+        const bodyClientSecret = body.client_secret;
         const actualMethod = detectAuthMethod(
           authorizationHeader,
           bodyClientSecret
@@ -110,6 +107,11 @@ class TokenEndpointAuthScenario implements Scenario {
             ...(formatError && { formatError })
           }
         });
+
+        return {
+          token: `test-token-${Date.now()}`,
+          scopes: []
+        };
       },
       onRegistrationRequest: () => ({
         clientId: `test-client-${Date.now()}`,