add setConfig in testCase

src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBJNIConnector.java

@@ -63,6 +63,8 @@ public class TSDBJNIConnector {
 
     public static native String getTsCharset();
 
+    public static native int setConfig(String config);
+
     public boolean connect(String host, int port, String dbName, String user, String password) throws SQLException {
         if (this.taos != TSDBConstants.JNI_NULL_POINTER) {
             closeConnection();
@@ -358,6 +360,5 @@ public class TSDBJNIConnector {
 
     private native int insertLinesImp(String[] lines, long conn);
 
-    private native int setConfig(String config);
 
 }

src/connector/jdbc/src/test/java/com/taosdata/jdbc/SetConfigurationInJNITest.java

@@ -19,13 +19,17 @@ public class SetConfigurationInJNITest {
     @Test
     public void testDebugFlag() {
         try {
+            // init
             TSDBJNIConnector.initImp(null);
             TSDBJNIConnector.setOptions(0, null);
             TSDBJNIConnector.setOptions(1, null);
             TSDBJNIConnector.setOptions(2, null);
             String tsCharset = TSDBJNIConnector.getTsCharset();
-            System.out.println(tsCharset);
+            assertEquals("", tsCharset);
 
+            TSDBJNIConnector.setConfig(debugFlagJSON);
+
+            // connect
             TSDBJNIConnector jniConnector = new TSDBJNIConnector();
             boolean connected = jniConnector.connect(host, 0, null, "root", "taosdata");
             assertTrue(connected);