Don't allow tst_QJSEngine or tst_QJSValue instance to be collected

Both of those unit tests currently change the ownership of the test
instance object, which could result in it being collected by the JS
GC and deleted if events were processed.

Change-Id: I5a9821fb56e19af1d52fea46e54755875dfbb29a
Reviewed-by: Michael Brasser <michael.brasser@nokia.com>

2 files changed, 36 insertions, 22 deletions

diff --git a/tests/auto/qml/qjsengine/tst_qjsengine.cpp b/tests/auto/qml/qjsengine/tst_qjsengine.cpp
index 66fef8e2dd..6f9cc93757 100644
--- a/tests/auto/qml/qjsengine/tst_qjsengine.cpp
+++ b/tests/auto/qml/qjsengine/tst_qjsengine.cpp
@@ -899,6 +899,7 @@ void tst_QJSEngine::jsParseDate()
 void tst_QJSEngine::newQObject()
 {
     QJSEngine eng;
+    QObject temp;
 
     {
         QJSValue qobject = eng.newQObject(0);
@@ -907,11 +908,11 @@ void tst_QJSEngine::newQObject()
         QCOMPARE(qobject.toQObject(), (QObject *)0);
     }
     {
-        QJSValue qobject = eng.newQObject(this);
+        QJSValue qobject = eng.newQObject(&temp);
         QVERIFY(!qobject.isUndefined());
         QCOMPARE(qobject.isQObject(), true);
         QCOMPARE(qobject.isObject(), true);
-        QCOMPARE(qobject.toQObject(), (QObject *)this);
+        QCOMPARE(qobject.toQObject(), (QObject *)&temp);
         QVERIFY(!qobject.isCallable());
         // prototype should be QObject.prototype
         QCOMPARE(qobject.prototype().isObject(), true);
@@ -1068,6 +1069,7 @@ void tst_QJSEngine::newQObject_sameQObject()
 #if 0 // FIXME: No prototype API in QScriptEngine
 void tst_QJSEngine::newQObject_defaultPrototype()
 {
+    QObject temp;
     QScriptEngine eng;
     // newQObject() should set the default prototype, if one has been registered
     {
@@ -1076,14 +1078,14 @@ void tst_QJSEngine::newQObject_defaultPrototype()
         QScriptValue qobjectProto = eng.newObject();
         eng.setDefaultPrototype(qMetaTypeId<QObject*>(), qobjectProto);
         {
-            QScriptValue ret = eng.newQObject(this);
+            QScriptValue ret = eng.newQObject(&temp);
             QVERIFY(ret.prototype().equals(qobjectProto));
         }
         QScriptValue tstProto = eng.newObject();
         int typeId = qRegisterMetaType<tst_QJSEngine*>("tst_QJSEngine*");
         eng.setDefaultPrototype(typeId, tstProto);
         {
-            QScriptValue ret = eng.newQObject(this);
+            QScriptValue ret = eng.newQObject(temp);
             QVERIFY(ret.prototype().equals(tstProto));
         }
 
@@ -1261,7 +1263,8 @@ void tst_QJSEngine::newQMetaObject()
         QVERIFY(instanceofJS(inst, qclass3).strictlyEquals(false));
     }
     {
-        QScriptValue inst = qclass4.callAsConstructor(QScriptValueList() << eng.newQObject(this));
+        QObject temp;
+        QScriptValue inst = qclass4.callAsConstructor(QScriptValueList() << eng.newQObject(&temp));
         QVERIFY(inst.isQObject());
         QVERIFY(inst.toQObject() != 0);
         QCOMPARE(inst.toQObject()->parent(), (QObject*)this);
@@ -2887,6 +2890,7 @@ void tst_QJSEngine::castWithPrototypeChain()
     QScriptEngine eng;
     Bar bar;
     Baz baz;
+    QObject temp;
     QScriptValue barProto = eng.toScriptValue(&bar);
     QScriptValue bazProto = eng.toScriptValue(&baz);
     eng.setDefaultPrototype(qMetaTypeId<Bar*>(), barProto);
@@ -2954,7 +2958,7 @@ void tst_QJSEngine::castWithPrototypeChain()
         QVERIFY(pbar == 0);
     }
 
-    bazProto.setPrototype(eng.newQObject(this));
+    bazProto.setPrototype(eng.newQObject(&temp));
     {
         Baz *pbaz = qscriptvalue_cast<Baz*>(baz2Value);
         QVERIFY(pbaz != 0);
@@ -3756,8 +3760,9 @@ private:
     QScriptEngine* m_engine;
 protected:
     void run() {
+        QObject temp;
         m_engine = new QScriptEngine();
-        m_engine->setGlobalObject(m_engine->newQObject(this));
+        m_engine->setGlobalObject(m_engine->newQObject(&temp));
         m_engine->evaluate("while (1) { sleep(); }");
         delete m_engine;
     }
@@ -4941,6 +4946,7 @@ void tst_QJSEngine::reentrancy_Array()
 
 void tst_QJSEngine::reentrancy_objectCreation()
 {
+    QObject temp;
     QJSEngine eng1;
     QJSEngine eng2;
     {
@@ -4957,8 +4963,8 @@ void tst_QJSEngine::reentrancy_objectCreation()
         QCOMPARE(qjsvalue_cast<QRegExp>(r2), qjsvalue_cast<QRegExp>(r1));
     }
     {
-        QJSValue o1 = eng1.newQObject(this);
-        QJSValue o2 = eng2.newQObject(this);
+        QJSValue o1 = eng1.newQObject(&temp);
+        QJSValue o2 = eng2.newQObject(&temp);
         QCOMPARE(o1.toQObject(), o2.toQObject());
         QCOMPARE(o2.toQObject(), o1.toQObject());
     }
diff --git a/tests/auto/qml/qjsvalue/tst_qjsvalue.cpp b/tests/auto/qml/qjsvalue/tst_qjsvalue.cpp
index cec10ccf38..ad655217ad 100644
--- a/tests/auto/qml/qjsvalue/tst_qjsvalue.cpp
+++ b/tests/auto/qml/qjsvalue/tst_qjsvalue.cpp
@@ -986,6 +986,7 @@ Q_DECLARE_METATYPE(QVariant)
 void tst_QJSValue::toVariant()
 {
     QJSEngine eng;
+    QObject temp;
 
     QJSValue undefined = eng.toScriptValue(QVariant());
     QCOMPARE(undefined.toVariant(), QVariant());
@@ -1020,11 +1021,11 @@ void tst_QJSValue::toVariant()
     QJSValue object = eng.newObject();
     QCOMPARE(object.toVariant(), QVariant(QVariantMap()));
 
-    QJSValue qobject = eng.newQObject(this);
+    QJSValue qobject = eng.newQObject(&temp);
     {
         QVariant var = qobject.toVariant();
         QCOMPARE(var.userType(), int(QMetaType::QObjectStar));
-        QCOMPARE(qVariantValue<QObject*>(var), (QObject *)this);
+        QCOMPARE(qVariantValue<QObject*>(var), (QObject *)&temp);
     }
 
     {
@@ -1130,10 +1131,11 @@ Q_DECLARE_METATYPE(QPushButton*);
 void tst_QJSValue::toQObject()
 {
     QJSEngine eng;
+    QObject temp;
 
-    QJSValue qobject = eng.newQObject(this);
-    QCOMPARE(qobject.toQObject(), (QObject *)this);
-    QCOMPARE(qjsvalue_cast<QObject*>(qobject), (QObject *)this);
+    QJSValue qobject = eng.newQObject(&temp);
+    QCOMPARE(qobject.toQObject(), (QObject *)&temp);
+    QCOMPARE(qjsvalue_cast<QObject*>(qobject), (QObject *)&temp);
     QCOMPARE(qjsvalue_cast<QWidget*>(qobject), (QWidget *)0);
 
     QWidget widget;
@@ -2168,6 +2170,7 @@ void tst_QJSValue::getSetData_objects_data()
 {
 #if 0 // FIXME: no setData/data API
     newEngine();
+    QObject *temp = new QObject;
 
     QTest::addColumn<QJSValue>("object");
 
@@ -2175,7 +2178,7 @@ void tst_QJSValue::getSetData_objects_data()
     QTest::newRow("object from engine") << engine->newObject();
     QTest::newRow("Array") << engine->newArray();
     QTest::newRow("Date") << engine->evaluate("new Date(12324)");
-    QTest::newRow("QObject") << engine->newQObject(this);
+    QTest::newRow("QObject") << engine->newQObject(temp);
     QTest::newRow("RegExp") << engine->newRegExp(QRegExp());
 #endif
 }
@@ -2265,6 +2268,7 @@ public:
 void tst_QJSValue::getSetScriptClass_emptyClass_data()
 {
     newEngine();
+    QObject *temp = new QObject;
     QTest::addColumn<QJSValue>("value");
 
     QTest::newRow("invalid") << QJSValue();
@@ -2281,7 +2285,7 @@ void tst_QJSValue::getSetScriptClass_emptyClass_data()
     QTest::newRow("undefined") << QJSValue(engine->toScriptValue(QVariant()));
     QTest::newRow("object") << QJSValue(engine->newObject());
     QTest::newRow("date") << QJSValue(engine->evaluate("new Date()"));
-    QTest::newRow("qobject") << QJSValue(engine->newQObject(this));
+    QTest::newRow("qobject") << QJSValue(engine->newQObject(temp));
 }
 
 void tst_QJSValue::getSetScriptClass_emptyClass()
@@ -2341,9 +2345,10 @@ void tst_QJSValue::getSetScriptClass_QVariant()
 void tst_QJSValue::getSetScriptClass_QObject()
 {
     QScriptEngine eng;
+    QObject temp;
     TestScriptClass testClass(&eng);
     {
-        QJSValue obj = eng.newQObject(this);
+        QJSValue obj = eng.newQObject(&temp);
         QVERIFY(obj.isQObject());
         obj.setScriptClass(&testClass);
         QCOMPARE(obj.scriptClass(), (QScriptClass*)&testClass);
@@ -2999,6 +3004,7 @@ void tst_QJSValue::lessThan()
 void tst_QJSValue::equals()
 {
     QJSEngine eng;
+    QObject temp;
 
     QVERIFY(QJSValue().equals(QJSValue()));
 
@@ -3088,8 +3094,8 @@ void tst_QJSValue::equals()
     QCOMPARE(obj1.equals(obj1), true);
     QCOMPARE(obj2.equals(obj2), true);
 
-    QJSValue qobj1 = eng.newQObject(this);
-    QJSValue qobj2 = eng.newQObject(this);
+    QJSValue qobj1 = eng.newQObject(&temp);
+    QJSValue qobj2 = eng.newQObject(&temp);
     QJSValue qobj3 = eng.newQObject(0);
 
     // FIXME: No ScriptOwnership: QJSValue qobj4 = eng.newQObject(new QObject(), QScriptEngine::ScriptOwnership);
@@ -3137,6 +3143,7 @@ void tst_QJSValue::equals()
 void tst_QJSValue::strictlyEquals()
 {
     QJSEngine eng;
+    QObject temp;
 
     QVERIFY(QJSValue().strictlyEquals(QJSValue()));
 
@@ -3242,8 +3249,8 @@ void tst_QJSValue::strictlyEquals()
     QCOMPARE(obj2.strictlyEquals(obj2), true);
     QVERIFY(!obj1.strictlyEquals(QJSValue()));
 
-    QJSValue qobj1 = eng.newQObject(this);
-    QJSValue qobj2 = eng.newQObject(this);
+    QJSValue qobj1 = eng.newQObject(&temp);
+    QJSValue qobj2 = eng.newQObject(&temp);
     QVERIFY(qobj1.strictlyEquals(qobj2));
 
     {
@@ -3482,13 +3489,14 @@ void tst_QJSValue::prettyPrinter()
 void tst_QJSValue::engineDeleted()
 {
     QJSEngine *eng = new QJSEngine;
+    QObject temp;
     QJSValue v1 = eng->toScriptValue(123);
     QVERIFY(v1.isNumber());
     QJSValue v2 = eng->toScriptValue(QString("ciao"));
     QVERIFY(v2.isString());
     QJSValue v3 = eng->newObject();
     QVERIFY(v3.isObject());
-    QJSValue v4 = eng->newQObject(this);
+    QJSValue v4 = eng->newQObject(&temp);
     QVERIFY(v4.isQObject());
     QJSValue v5 = "Hello";
     QVERIFY(v2.isString());