import org.mule.extension.db.internal.DbConnector; import org.mule.functional.junit4.MuleArtifactFunctionalTestCase; import org.mule.runtime.api.exception.MuleException; import org.mule.tck.size.SmallTest; import org.junit.Test; @SmallTest public class MyLibraryTest extends MuleArtifactFunctionalTestCase { @Override protected String getConfigFile() { return "mule-config.xml"; } @Test public void testMyLibrary() throws MuleException { // Setup DbConnector connector = muleContext.getRegistry().lookupObject(DbConnector.class); // Input String input = "Test input"; // Execute String output = connector.processData(input); // Assert assertEquals("Expected output", output); } }