@ParameterizedTest
    @ArgumentsSource(SslTransportLayerArgumentsProvider.class)
    public void testNullTruststorePassword(Args args) throws Exception {
        args.sslClientConfigs.remove(SslConfigs.SSL_TRUSTSTORE_PASSWORD_CONFIG);
        args.sslServerConfigs.remove(SslConfigs.SSL_TRUSTSTORE_PASSWORD_CONFIG);

        verifySslConfigs(args);
    }
Tests that client connections can be created to a server
if null truststore password is used
clients/src/test/java/org/apache/kafka/common/network/SslTransportLayerTest.java