#include <QtCore>

#define TEST_ITERATIONS 1000

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

    bool failure(false);

    qsrand(QTime::currentTime().msec());

    for (int test= 0; (test < TEST_ITERATIONS) && (!failure); test++) {

        // Stuff 17 significant decimal digits (from 1 to 9) in aNumberWithManyDigits
        QByteArray aNumberWithManyDigits("0.");
        for (int i= 0; i < 17; i++) {
            aNumberWithManyDigits.append(QByteArray::number((qrand() % 9) + 1));
        }
        double d1(aNumberWithManyDigits.toDouble());

        // Store the value in a QJsonObject and use toJson() method to obtain a JSON parseable object
        QJsonObject jObject;
        jObject.insert("a nice double value", QJsonValue(d1));
        QJsonDocument jDocument1(jObject);
        QByteArray a(jDocument1.toJson());

        // Parse back the JSON object into a new QJsonDocument
        QJsonDocument jDocument2(QJsonDocument::fromJson(a));

        // Obtain the stored value
        double d2(jDocument2.object().value("a nice double value").toDouble());
        failure = (d1 != d2);

    }

    if (failure) {
        qDebug() << "Test failed";
    }
    else {
        qDebug() << "Test passed";
    }

    return 0;
}