QTextStream не записывает в файл.

class IOFile : public QObject
{
    Q_OBJECT
public:
    explicit IOFile(QObject *parent = 0) {
        file = new QFile(this);
        fileStream = new QTextStream(file);
    }
    ~IOFile();

private:
    QFile *file;
    QTextStream *fileStream;

public slots:
    void dataWrite(data_t data) {
        *fileStream << data << "\n";           //Так не работает
        file->write(QByteArray::number(data)); //А вот так все ок
    }

};

    iofile = new IOFile;
    iofile->moveToThread(&FileThread);
    FileThread.start();

    QFile *file = new QFile("data.txt");
    QTextStream *stream = new QTextStream(file);
    if (file->open(QIODevice::ReadWrite)) {
        *stream << "ta-dam!" << endl;
    }

//iofile.h
#ifndef IOFILE
#define IOFILE

#include <QObject>
#include <QFile>
#include <QTextStream>

class IOFile : public QObject
{
    Q_OBJECT
public:
    explicit IOFile(QObject *parent = 0) : QObject(parent), file(new QFile("/home/wolph/test.txt", this))
    {
        file->open(QIODevice::WriteOnly);

        stream.setDevice(file);
    }

private:
    QFile *file;
    QTextStream stream;


signals:

public slots:
    void dataWrite(const QString &data) {
        stream << data;
    }
};

#endif // IOFILE



//main.cpp
#include <QCoreApplication>
#include <QThread>
#include <QTimer>

#include "iofile.h"



int main(int argc, char *argv[])
{
    QCoreApplication app(argc, argv);

    QThread thread;
    thread.start();

    IOFile iofile;
    iofile.moveToThread(&thread);

    QTimer timer1;
    timer1.setSingleShot(true);
    QObject::connect(&timer1, &QTimer::timeout, [&iofile](){
        QMetaObject::invokeMethod(&iofile, "dataWrite", Qt::QueuedConnection, Q_ARG(QString, QStringLiteral("test")));
    });

    QTimer timer2;
    QObject::connect(&timer2, &QTimer::timeout, &app, &QCoreApplication::quit);


    timer1.start(1000);
    timer2.start(2000);


    int ret = app.exec();

    thread.quit();
    thread.wait(1000);

    return ret;
}

void QTextStream::setDevice(QIODevice * device)

stream.setDevice(file);