Why is a test taking forever to execute

When building a maven project I have forked, it runs several test classes located in src/test, one test class is especially troublesome: TestWriteAndRead

When trying to run this class, the test never completes.

package regalowl.simpledatalib.sql;

import static org.junit.Assert.*;

import org.junit.Test;

import regalowl.simpledatalib.SimpleDataLib;
import regalowl.simpledatalib.TestLogger;
import regalowl.simpledatalib.sql.Field;
import regalowl.simpledatalib.sql.FieldType;
import regalowl.simpledatalib.sql.SQLManager;
import regalowl.simpledatalib.sql.Table;

public class TestWriteAndRead {
    @Test
    public void testCreateShutdownAndLoad() {
        SimpleDataLib sdl = new SimpleDataLib("test");
        sdl.initialize();
        sdl.setDebug(true);
        new TestLogger(sdl);
        SQLManager sm = sdl.getSQLManager();
        sm.setWriteTaskInterval(1L);
        sm.createDatabase();

        SQLWrite sw = sm.getSQLWrite();
        Table t = sm.addTable("hyperconomy_object_data");
        Field f = t.addField("ID", FieldType.INTEGER);f.setPrimaryKey();f.setAutoIncrement();
        f = t.addField("DATA", FieldType.TEXT);
        sm.saveTables();
        sw.writeSync(true);
        String statement = "DELETE FROM hyperconomy_object_data";
        sw.addToQueue(statement);
        sw.writeSyncQueue();
        sw.writeSync(false);


        statement = "INSERT INTO hyperconomy_object_data (ID, DATA) VALUES ('" + 1 + "', ?)";
        WriteStatement ws = new WriteStatement(statement, sdl);
        ws.addParameter("test");
        sw.addToQueue(ws);


        sm.shutDown();


        sdl.initialize();
        sdl.setDebug(true);
        new TestLogger(sdl);
        sm = sdl.getSQLManager();
        sm.createDatabase();
        SQLRead sr = sm.getSQLRead();
        QueryResult qr  = sr.select("SELECT * FROM hyperconomy_object_data WHERE ID = '1'");
        qr.next();
        assertTrue(qr.getString("DATA").equals("test"));
    }
}

No error messages are returned. The test starts, but never ends