viktorsomogyi commented on code in PR #23557:
URL: https://github.com/apache/kafka/pull/23557#discussion_r4194109147


##########
clients/src/main/java/org/apache/kafka/common/security/oauthbearer/internals/unsecured/OAuthBearerUnsecuredLoginCallbackHandler.java:
##########
@@ -180,12 +180,14 @@ public void close() {
     private void handleTokenCallback(OAuthBearerTokenCallback callback) {
         if (callback.token() != null)
             throw new IllegalArgumentException("Callback had a token already");
-        if (moduleOptions.isEmpty()) {
+        if (!hasUnsecuredLoginOptions()) {

Review Comment:
   It also makes it possible for typos to get through, like if an option starts 
with "unsecureLogin" (missing d from unsecure**d**), which would materialize 
sometime later in this path. It's not a serious issue though because this class 
is only used for testing as I understand it, but perhaps we could log what was 
ignored, so it's easier to trace.



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