[GitHub] [kafka] RivenSun2 commented on a diff in pull request #12010: KAFKA-13793: Add validators for configs that lack validators

[GitBox]

RivenSun2 commented on code in PR #12010:
URL: https://github.com/apache/kafka/pull/12010#discussion_r867284907


##########
clients/src/test/java/org/apache/kafka/clients/CommonClientConfigsTest.java:
##########
@@ -82,4 +102,21 @@ public void testExponentialBackoffDefaults() {
         assertEquals(Long.valueOf(123L),
                 
reconnectBackoffSetConf.getLong(CommonClientConfigs.RECONNECT_BACKOFF_MAX_MS_CONFIG));
     }
+
+    @Test
+    public void testInvalidSaslMechanism() {
+        Map<String, Object> configs = new HashMap<>();
+        configs.put(CommonClientConfigs.SECURITY_PROTOCOL_CONFIG, 
SecurityProtocol.SASL_PLAINTEXT.name);
+        configs.put(SaslConfigs.SASL_MECHANISM, null);
+        ConfigException ce = assertThrows(ConfigException.class, () -> new 
TestConfig(configs));
+        assertTrue(ce.getMessage().contains(SaslConfigs.SASL_MECHANISM));
+
+        configs.put(SaslConfigs.SASL_MECHANISM, "");
+        ce = assertThrows(ConfigException.class, () -> new 
TestConfig(configs));
+        assertTrue(ce.getMessage().contains(SaslConfigs.SASL_MECHANISM));
+
+        configs.put(SaslConfigs.SASL_MECHANISM, " ");

Review Comment:
   Sure



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