Replace src/test/java/com/teradata/app/AppTest.java with the following:
Note
The test connects to your live Teradata instance, so it requires the credentials you set in App.java to be valid and the instance to be reachable.
package com.teradata.app;
import org.junit.Test;
public class AppTest {
@Test
public void shouldConnectAndQueryTeradata() {
new App().query();
}
}