qt-everywhere-src-5.15.1/qtscript/tests/auto/qscriptvalueiterator/tst_qscriptvalueiterator.cpp

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** This file is part of the test suite of the Qt Toolkit.
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#include <QtTest/QtTest>

#include <QtScript/qscriptengine.h>
#include <QtScript/qscriptvalueiterator.h>

Q_DECLARE_METATYPE(QScriptValue);

class tst_QScriptValueIterator : public QObject
{
    Q_OBJECT

public:
    tst_QScriptValueIterator();
    virtual ~tst_QScriptValueIterator();

private slots:
    void iterateForward_data();
    void iterateForward();
    void iterateBackward_data();
    void iterateBackward();
    void iterateArray_data();
    void iterateArray();
    void iterateBackAndForth();
    void setValue();
    void remove();
    void iterateString();
    void iterateGetterSetter();
    void assignObjectToIterator();
    void iterateNonObject();
    void iterateOverObjectFromDeletedEngine();
};

tst_QScriptValueIterator::tst_QScriptValueIterator()
{
}

tst_QScriptValueIterator::~tst_QScriptValueIterator()
{
}

void tst_QScriptValueIterator::iterateForward_data()
{
    QTest::addColumn<QStringList>("propertyNames");
    QTest::addColumn<QStringList>("propertyValues");

    QTest::newRow("no properties")
        << QStringList() << QStringList();
    QTest::newRow("foo=bar")
        << (QStringList() << "foo")
        << (QStringList() << "bar");
    QTest::newRow("foo=bar, baz=123")
        << (QStringList() << "foo" << "baz")
        << (QStringList() << "bar" << "123");
    QTest::newRow("foo=bar, baz=123, rab=oof")
        << (QStringList() << "foo" << "baz" << "rab")
        << (QStringList() << "bar" << "123" << "oof");
}

void tst_QScriptValueIterator::iterateForward()
{
    QFETCH(QStringList, propertyNames);
    QFETCH(QStringList, propertyValues);
    QMap<QString, QString> pmap;
    QVERIFY(propertyNames.size() == propertyValues.size());

    QScriptEngine engine;
    QScriptValue object = engine.newObject();
    for (int i = 0; i < propertyNames.size(); ++i) {
        QString name = propertyNames.at(i);
        QString value = propertyValues.at(i);
        pmap.insert(name, value);
        object.setProperty(name, QScriptValue(&engine, value));
    }
    QScriptValue otherObject = engine.newObject();
    otherObject.setProperty("foo", QScriptValue(&engine, 123456));
    otherObject.setProperty("protoProperty", QScriptValue(&engine, 654321));
    object.setPrototype(otherObject); // should not affect iterator

    QStringList lst;
    QScriptValueIterator it(object);
    while (!pmap.isEmpty()) {
        QCOMPARE(it.hasNext(), true);
        QCOMPARE(it.hasNext(), true);
        it.next();
        QString name = it.name();
        QCOMPARE(pmap.contains(name), true);
        QCOMPARE(it.name(), name);
        QCOMPARE(it.flags(), object.propertyFlags(name));
        QCOMPARE(it.value().strictlyEquals(QScriptValue(&engine, pmap.value(name))), true);
        QCOMPARE(it.scriptName(), engine.toStringHandle(name));
        pmap.remove(name);
        lst.append(name);
    }

    QCOMPARE(it.hasNext(), false);
    QCOMPARE(it.hasNext(), false);

    it.toFront();
    for (int i = 0; i < lst.count(); ++i) {
        QCOMPARE(it.hasNext(), true);
        it.next();
        QCOMPARE(it.name(), lst.at(i));
    }

    for (int i = 0; i < lst.count(); ++i) {
        QCOMPARE(it.hasPrevious(), true);
        it.previous();
        QCOMPARE(it.name(), lst.at(lst.count()-1-i));
    }
    QCOMPARE(it.hasPrevious(), false);
}

void tst_QScriptValueIterator::iterateBackward_data()
{
    iterateForward_data();
}

void tst_QScriptValueIterator::iterateBackward()
{
    QFETCH(QStringList, propertyNames);
    QFETCH(QStringList, propertyValues);
    QMap<QString, QString> pmap;
    QVERIFY(propertyNames.size() == propertyValues.size());

    QScriptEngine engine;
    QScriptValue object = engine.newObject();
    for (int i = 0; i < propertyNames.size(); ++i) {
        QString name = propertyNames.at(i);
        QString value = propertyValues.at(i);
        pmap.insert(name, value);
        object.setProperty(name, QScriptValue(&engine, value));
    }

    QStringList lst;
    QScriptValueIterator it(object);
    it.toBack();
    while (!pmap.isEmpty()) {
        QCOMPARE(it.hasPrevious(), true);
        QCOMPARE(it.hasPrevious(), true);
        it.previous();
        QString name = it.name();
        QCOMPARE(pmap.contains(name), true);
        QCOMPARE(it.name(), name);
        QCOMPARE(it.flags(), object.propertyFlags(name));
        QCOMPARE(it.value().strictlyEquals(QScriptValue(&engine, pmap.value(name))), true);
        pmap.remove(name);
        lst.append(name);
    }

    QCOMPARE(it.hasPrevious(), false);
    QCOMPARE(it.hasPrevious(), false);

    it.toBack();
    for (int i = 0; i < lst.count(); ++i) {
        QCOMPARE(it.hasPrevious(), true);
        it.previous();
        QCOMPARE(it.name(), lst.at(i));
    }

    for (int i = 0; i < lst.count(); ++i) {
        QCOMPARE(it.hasNext(), true);
        it.next();
        QCOMPARE(it.name(), lst.at(lst.count()-1-i));
    }
    QCOMPARE(it.hasNext(), false);
}

void tst_QScriptValueIterator::iterateArray_data()
{
    QTest::addColumn<QStringList>("propertyNames");
    QTest::addColumn<QStringList>("propertyValues");

    QTest::newRow("no elements") << QStringList() << QStringList();

    QTest::newRow("0=foo, 1=barr")
        << (QStringList() << "0" << "1")
        << (QStringList() << "foo" << "bar");


    QTest::newRow("0=foo, 3=barr")
        << (QStringList() << "0" << "1" << "2" << "3")
        << (QStringList() << "foo" << "" << "" << "bar");
}

void tst_QScriptValueIterator::iterateArray()
{
    QFETCH(QStringList, propertyNames);
    QFETCH(QStringList, propertyValues);

    QScriptEngine engine;
    QScriptValue array = engine.newArray();

    // Fill the array
    for (int i = 0; i < propertyNames.size(); ++i) {
        array.setProperty(propertyNames.at(i), propertyValues.at(i));
    }

    // Iterate thru array properties. Note that the QScriptValueIterator doesn't guarantee
    // any order on the iteration!
    int length = array.property("length").toInt32();
    QCOMPARE(length, propertyNames.size());

    bool iteratedThruLength = false;
    QHash<QString, QScriptValue> arrayProperties;
    QScriptValueIterator it(array);

    // Iterate forward
    while (it.hasNext()) {
        it.next();

        const QString name = it.name();
        if (name == QString::fromLatin1("length")) {
            QVERIFY(it.value().isNumber());
            QCOMPARE(it.value().toInt32(), length);
            QCOMPARE(it.flags(), QScriptValue::SkipInEnumeration | QScriptValue::Undeletable);
            QVERIFY2(!iteratedThruLength, "'length' appeared more than once during iteration.");
            iteratedThruLength = true;
            continue;
        }

        // Storing the properties we iterate in a hash to compare with test data.
        QVERIFY2(!arrayProperties.contains(name), "property appeared more than once during iteration.");
        arrayProperties.insert(name, it.value());
        QCOMPARE(it.flags(), array.propertyFlags(name));
        QVERIFY(it.value().strictlyEquals(array.property(name)));
    }

    // Verify properties
    QVERIFY(iteratedThruLength);
    QCOMPARE(arrayProperties.size(), propertyNames.size());
    for (int i = 0; i < propertyNames.size(); ++i) {
        QVERIFY(arrayProperties.contains(propertyNames.at(i)));
        QCOMPARE(arrayProperties.value(propertyNames.at(i)).toString(), propertyValues.at(i));
    }

    // Iterate backwards
    arrayProperties.clear();
    iteratedThruLength = false;
    it.toBack();

    while (it.hasPrevious()) {
        it.previous();

        const QString name = it.name();
        if (name == QString::fromLatin1("length")) {
            QVERIFY(it.value().isNumber());
            QCOMPARE(it.value().toInt32(), length);
            QCOMPARE(it.flags(), QScriptValue::SkipInEnumeration | QScriptValue::Undeletable);
            QVERIFY2(!iteratedThruLength, "'length' appeared more than once during iteration.");
            iteratedThruLength = true;
            continue;
        }

        // Storing the properties we iterate in a hash to compare with test data.
        QVERIFY2(!arrayProperties.contains(name), "property appeared more than once during iteration.");
        arrayProperties.insert(name, it.value());
        QCOMPARE(it.flags(), array.propertyFlags(name));
        QVERIFY(it.value().strictlyEquals(array.property(name)));
    }

    // Verify properties
    QVERIFY(iteratedThruLength);
    QCOMPARE(arrayProperties.size(), propertyNames.size());
    for (int i = 0; i < propertyNames.size(); ++i) {
        QVERIFY(arrayProperties.contains(propertyNames.at(i)));
        QCOMPARE(arrayProperties.value(propertyNames.at(i)).toString(), propertyValues.at(i));
    }

    // ### Do we still need this test?
    // Forward test again but as object
    arrayProperties.clear();
    iteratedThruLength = false;
    QScriptValue arrayObject = engine.toObject(array);
    QScriptValueIterator it2(arrayObject);

    while (it2.hasNext()) {
        it2.next();

        const QString name = it2.name();
        if (name == QString::fromLatin1("length")) {
            QVERIFY(it2.value().isNumber());
            QCOMPARE(it2.value().toInt32(), length);
            QCOMPARE(it2.flags(), QScriptValue::SkipInEnumeration | QScriptValue::Undeletable);
            QVERIFY2(!iteratedThruLength, "'length' appeared more than once during iteration.");
            iteratedThruLength = true;
            continue;
        }

        // Storing the properties we iterate in a hash to compare with test data.
        QVERIFY2(!arrayProperties.contains(name), "property appeared more than once during iteration.");
        arrayProperties.insert(name, it2.value());
        QCOMPARE(it2.flags(), arrayObject.propertyFlags(name));
        QVERIFY(it2.value().strictlyEquals(arrayObject.property(name)));
    }

    // Verify properties
    QVERIFY(iteratedThruLength);
    QCOMPARE(arrayProperties.size(), propertyNames.size());
    for (int i = 0; i < propertyNames.size(); ++i) {
        QVERIFY(arrayProperties.contains(propertyNames.at(i)));
        QCOMPARE(arrayProperties.value(propertyNames.at(i)).toString(), propertyValues.at(i));
    }
}

void tst_QScriptValueIterator::iterateBackAndForth()
{
    QScriptEngine engine;
    {
        QScriptValue object = engine.newObject();
        object.setProperty("foo", QScriptValue(&engine, "bar"));
        object.setProperty("rab", QScriptValue(&engine, "oof"),
                           QScriptValue::SkipInEnumeration); // should not affect iterator
        QScriptValueIterator it(object);
        QVERIFY(it.hasNext());
        it.next();
        QCOMPARE(it.name(), QLatin1String("foo"));
        QVERIFY(it.hasPrevious());
        it.previous();
        QCOMPARE(it.name(), QLatin1String("foo"));
        QVERIFY(it.hasNext());
        it.next();
        QCOMPARE(it.name(), QLatin1String("foo"));
        QVERIFY(it.hasPrevious());
        it.previous();
        QCOMPARE(it.name(), QLatin1String("foo"));
        QVERIFY(it.hasNext());
        it.next();
        QCOMPARE(it.name(), QLatin1String("foo"));
        QVERIFY(it.hasNext());
        it.next();
        QCOMPARE(it.name(), QLatin1String("rab"));
        QVERIFY(it.hasPrevious());
        it.previous();
        QCOMPARE(it.name(), QLatin1String("rab"));
        QVERIFY(it.hasNext());
        it.next();
        QCOMPARE(it.name(), QLatin1String("rab"));
        QVERIFY(it.hasPrevious());
        it.previous();
        QCOMPARE(it.name(), QLatin1String("rab"));
    }
    {
        // hasNext() and hasPrevious() cache their result; verify that the result is in sync
        QScriptValue object = engine.newObject();
        object.setProperty("foo", QScriptValue(&engine, "bar"));
        object.setProperty("rab", QScriptValue(&engine, "oof"));
        QScriptValueIterator it(object);
        QVERIFY(it.hasNext());
        it.next();
        QCOMPARE(it.name(), QString::fromLatin1("foo"));
        QVERIFY(it.hasNext());
        it.previous();
        QCOMPARE(it.name(), QString::fromLatin1("foo"));
        QVERIFY(!it.hasPrevious());
        it.next();
        QCOMPARE(it.name(), QString::fromLatin1("foo"));
        QVERIFY(it.hasPrevious());
        it.next();
        QCOMPARE(it.name(), QString::fromLatin1("rab"));
    }
}

void tst_QScriptValueIterator::setValue()
{
    QScriptEngine engine;
    QScriptValue object = engine.newObject();
    object.setProperty("foo", QScriptValue(&engine, "bar"));
    QScriptValueIterator it(object);
    it.next();
    QCOMPARE(it.name(), QLatin1String("foo"));
    it.setValue(QScriptValue(&engine, "baz"));
    QCOMPARE(it.value().strictlyEquals(QScriptValue(&engine, QLatin1String("baz"))), true);
    QCOMPARE(object.property("foo").toString(), QLatin1String("baz"));
    it.setValue(QScriptValue(&engine, "zab"));
    QCOMPARE(it.value().strictlyEquals(QScriptValue(&engine, QLatin1String("zab"))), true);
    QCOMPARE(object.property("foo").toString(), QLatin1String("zab"));
}

void tst_QScriptValueIterator::remove()
{
    QScriptEngine engine;
    QScriptValue object = engine.newObject();
    object.setProperty("foo", QScriptValue(&engine, "bar"),
                       QScriptValue::SkipInEnumeration); // should not affect iterator
    object.setProperty("rab", QScriptValue(&engine, "oof"));
    QScriptValueIterator it(object);
    it.next();
    QCOMPARE(it.name(), QLatin1String("foo"));
    it.remove();
    QCOMPARE(it.hasPrevious(), false);
    QCOMPARE(object.property("foo").isValid(), false);
    QCOMPARE(object.property("rab").toString(), QLatin1String("oof"));
    it.next();
    QCOMPARE(it.name(), QLatin1String("rab"));
    QCOMPARE(it.value().toString(), QLatin1String("oof"));
    QCOMPARE(it.hasNext(), false);
    it.remove();
    QCOMPARE(object.property("rab").isValid(), false);
    QCOMPARE(it.hasPrevious(), false);
    QCOMPARE(it.hasNext(), false);
}

void tst_QScriptValueIterator::iterateString()
{
    QScriptEngine engine;
    QScriptValue str = QScriptValue(&engine, QString::fromLatin1("ciao"));
    QVERIFY(str.isString());
    QScriptValue obj = str.toObject();
    QVERIFY(obj.property("length").isNumber());
    int length = obj.property("length").toInt32();
    QCOMPARE(length, 4);

    QScriptValueIterator it(obj);
    QHash<QString, QScriptValue> stringProperties;
    bool iteratedThruLength = false;

    while (it.hasNext()) {
        it.next();
        const QString name = it.name();

        if (name == QString::fromLatin1("length")) {
            QVERIFY(it.value().isNumber());
            QCOMPARE(it.value().toInt32(), length);
            QCOMPARE(it.flags(), QScriptValue::ReadOnly | QScriptValue::SkipInEnumeration | QScriptValue::Undeletable);
            QVERIFY2(!iteratedThruLength, "'length' appeared more than once during iteration.");
            iteratedThruLength = true;
            continue;
        }

        QVERIFY2(!stringProperties.contains(name), "property appeared more than once during iteration.");
        stringProperties.insert(name, it.value());
        QCOMPARE(it.flags(), obj.propertyFlags(name));
        QVERIFY(it.value().strictlyEquals(obj.property(name)));
    }

    QVERIFY(iteratedThruLength);
    QCOMPARE(stringProperties.size(), length);

    // And going backwards
    iteratedThruLength = false;
    stringProperties.clear();
    it.toBack();

    while (it.hasPrevious()) {
        it.previous();
        const QString name = it.name();

        if (name == QString::fromLatin1("length")) {
            QVERIFY(it.value().isNumber());
            QCOMPARE(it.value().toInt32(), length);
            QCOMPARE(it.flags(), QScriptValue::ReadOnly | QScriptValue::SkipInEnumeration | QScriptValue::Undeletable);
            QVERIFY2(!iteratedThruLength, "'length' appeared more than once during iteration.");
            iteratedThruLength = true;
            continue;
        }

        QVERIFY2(!stringProperties.contains(name), "property appeared more than once during iteration.");
        stringProperties.insert(name, it.value());
        QCOMPARE(it.flags(), obj.propertyFlags(name));
        QVERIFY(it.value().strictlyEquals(obj.property(name)));
    }
}

static QScriptValue myGetterSetter(QScriptContext *ctx, QScriptEngine *)
{
    if (ctx->argumentCount() == 1)
        ctx->thisObject().setProperty("bar", ctx->argument(0));
    return ctx->thisObject().property("bar");
}

static QScriptValue myGetter(QScriptContext *ctx, QScriptEngine *)
{
    return ctx->thisObject().property("bar");
}

static QScriptValue mySetter(QScriptContext *ctx, QScriptEngine *)
{
    ctx->thisObject().setProperty("bar", ctx->argument(0));
    return ctx->argument(0);
}

void tst_QScriptValueIterator::iterateGetterSetter()
{
    // unified getter/setter function
    {
        QScriptEngine eng;
        QScriptValue obj = eng.newObject();
        obj.setProperty("foo", eng.newFunction(myGetterSetter),
                        QScriptValue::PropertyGetter | QScriptValue::PropertySetter);
        QScriptValue val(&eng, 123);
        obj.setProperty("foo", val);
        QVERIFY(obj.property("bar").strictlyEquals(val));
        QVERIFY(obj.property("foo").strictlyEquals(val));

        QScriptValueIterator it(obj);
        QVERIFY(it.hasNext());
        it.next();
        QCOMPARE(it.name(), QString::fromLatin1("foo"));
        QCOMPARE(it.flags(), QScriptValue::PropertyFlags(QScriptValue::PropertyGetter | QScriptValue::PropertySetter));
        QVERIFY(it.value().strictlyEquals(val));
        QScriptValue val2(&eng, 456);
        it.setValue(val2);
        QVERIFY(obj.property("bar").strictlyEquals(val2));
        QVERIFY(obj.property("foo").strictlyEquals(val2));

        QVERIFY(it.hasNext());
        it.next();
        QCOMPARE(it.name(), QString::fromLatin1("bar"));
        QVERIFY(!it.hasNext());

        QVERIFY(it.hasPrevious());
        it.previous();
        QCOMPARE(it.name(), QString::fromLatin1("bar"));
        QVERIFY(it.hasPrevious());
        it.previous();
        QCOMPARE(it.name(), QString::fromLatin1("foo"));
        QCOMPARE(it.flags(), QScriptValue::PropertyFlags(QScriptValue::PropertyGetter | QScriptValue::PropertySetter));
        QVERIFY(it.value().strictlyEquals(val2));
        it.setValue(val);
        QVERIFY(obj.property("bar").strictlyEquals(val));
        QVERIFY(obj.property("foo").strictlyEquals(val));
    }
    // separate getter/setter function
    for (int x = 0; x < 2; ++x) {
        QScriptEngine eng;
        QScriptValue obj = eng.newObject();
        if (x == 0) {
            obj.setProperty("foo", eng.newFunction(myGetter), QScriptValue::PropertyGetter);
            obj.setProperty("foo", eng.newFunction(mySetter), QScriptValue::PropertySetter);
        } else {
            obj.setProperty("foo", eng.newFunction(mySetter), QScriptValue::PropertySetter);
            obj.setProperty("foo", eng.newFunction(myGetter), QScriptValue::PropertyGetter);
        }
        QScriptValue val(&eng, 123);
        obj.setProperty("foo", val);
        QVERIFY(obj.property("bar").strictlyEquals(val));
        QVERIFY(obj.property("foo").strictlyEquals(val));

        QScriptValueIterator it(obj);
        QVERIFY(it.hasNext());
        it.next();
        QCOMPARE(it.name(), QString::fromLatin1("foo"));
        QVERIFY(it.value().strictlyEquals(val));
        QScriptValue val2(&eng, 456);
        it.setValue(val2);
        QVERIFY(obj.property("bar").strictlyEquals(val2));
        QVERIFY(obj.property("foo").strictlyEquals(val2));

        QVERIFY(it.hasNext());
        it.next();
        QCOMPARE(it.name(), QString::fromLatin1("bar"));
        QVERIFY(!it.hasNext());

        QVERIFY(it.hasPrevious());
        it.previous();
        QCOMPARE(it.name(), QString::fromLatin1("bar"));
        QVERIFY(it.hasPrevious());
        it.previous();
        QCOMPARE(it.name(), QString::fromLatin1("foo"));
        QVERIFY(it.value().strictlyEquals(val2));
        it.setValue(val);
        QVERIFY(obj.property("bar").strictlyEquals(val));
        QVERIFY(obj.property("foo").strictlyEquals(val));
    }
}

void tst_QScriptValueIterator::assignObjectToIterator()
{
    QScriptEngine eng;
    QScriptValue obj1 = eng.newObject();
    obj1.setProperty("foo", 123);
    QScriptValue obj2 = eng.newObject();
    obj2.setProperty("bar", 456);

    QScriptValueIterator it(obj1);
    QVERIFY(it.hasNext());
    it.next();
    it = obj2;
    QVERIFY(it.hasNext());
    it.next();
    QCOMPARE(it.name(), QString::fromLatin1("bar"));

    it = obj1;
    QVERIFY(it.hasNext());
    it.next();
    QCOMPARE(it.name(), QString::fromLatin1("foo"));

    it = obj2;
    QVERIFY(it.hasNext());
    it.next();
    QCOMPARE(it.name(), QString::fromLatin1("bar"));

    it = obj2;
    QVERIFY(it.hasNext());
    it.next();
    QCOMPARE(it.name(), QString::fromLatin1("bar"));
}

void tst_QScriptValueIterator::iterateNonObject()
{
    QScriptValueIterator it(123);
    QVERIFY(!it.hasNext());
    it.next();
    QVERIFY(!it.hasPrevious());
    it.previous();
    it.toFront();
    it.toBack();
    it.name();
    it.scriptName();
    it.flags();
    it.value();
    it.setValue(1);
    it.remove();
    QScriptValue num(5);
    it = num;
    QVERIFY(!it.hasNext());
}

void tst_QScriptValueIterator::iterateOverObjectFromDeletedEngine()
{
    QScriptEngine *engine = new QScriptEngine;
    QScriptValue objet = engine->newObject();

    // populate object with properties
    QHash<QString, int> properties;
    properties.insert("foo",1235);
    properties.insert("oof",5321);
    properties.insert("ofo",3521);
    QHash<QString, int>::const_iterator i = properties.constBegin();
    for(; i != properties.constEnd(); ++i) {
        objet.setProperty(i.key(), i.value());
    }

    // start iterating
    QScriptValueIterator it(objet);
    it.next();
    QVERIFY(properties.contains(it.name()));

    delete engine;

    QVERIFY(!objet.isValid());
    QVERIFY(it.name().isEmpty());
    QVERIFY(!it.value().isValid());

    QVERIFY(!it.hasNext());
    it.next();

    QVERIFY(it.name().isEmpty());
    QVERIFY(!it.scriptName().isValid());
    QVERIFY(!it.value().isValid());
    it.setValue("1234567");
    it.remove();

    QVERIFY(!it.hasPrevious());
    it.previous();

    QVERIFY(it.name().isEmpty());
    QVERIFY(!it.scriptName().isValid());
    QVERIFY(!it.value().isValid());
    it.setValue("1234567");
    it.remove();
}

QTEST_MAIN(tst_QScriptValueIterator)
#include "tst_qscriptvalueiterator.moc"