Get rid of QDeclarativeMetaType::{canCopy,copy}

Now that we have QMetaType::construct() that does placement new
construction, we can use that to copy the value.

We need to destruct the (default-constructed) existing value first,
but for primitive types that's a no-op, and for Qt's types it's
cheap since they use lazy initialization or "shared null".

Change-Id: Idadee04b1d5b590be7fec50fb0396fd277bee973
Reviewed-by: Aaron Kennedy <aaron.kennedy@nokia.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/tests/auto/declarative/qdeclarativeecmascript/tst_qdeclarativeecmascript.cpp b/tests/auto/declarative/qdeclarativeecmascript/tst_qdeclarativeecmascript.cpp
index 31d4feb655..38d436448f 100644
--- a/tests/auto/declarative/qdeclarativeecmascript/tst_qdeclarativeecmascript.cpp
+++ b/tests/auto/declarative/qdeclarativeecmascript/tst_qdeclarativeecmascript.cpp
@@ -148,6 +148,8 @@ private slots:
     void signalWithJSValueInVariant();
     void signalWithJSValueInVariant_twoEngines_data();
     void signalWithJSValueInVariant_twoEngines();
+    void signalWithQJSValue_data();
+    void signalWithQJSValue();
     void moduleApi_data();
     void moduleApi();
     void importScripts_data();
@@ -2945,6 +2947,32 @@ void tst_qdeclarativeecmascript::signalWithJSValueInVariant_twoEngines()
     QVERIFY(!object->property("pass").toBool());
 }
 
+void tst_qdeclarativeecmascript::signalWithQJSValue_data()
+{
+    signalWithJSValueInVariant_data();
+}
+
+void tst_qdeclarativeecmascript::signalWithQJSValue()
+{
+    QFETCH(QString, expression);
+    QFETCH(QString, compare);
+
+    QDeclarativeComponent component(&engine, TEST_FILE("signalWithQJSValue.qml"));
+    QScopedPointer<MyQmlObject> object(qobject_cast<MyQmlObject *>(component.create()));
+    QVERIFY(object != 0);
+
+    QJSValue value = engine.evaluate(expression);
+    QVERIFY(!engine.hasUncaughtException());
+    object->setProperty("expression", expression);
+    object->setProperty("compare", compare);
+    object->setProperty("pass", false);
+
+    emit object->signalWithQJSValue(value);
+
+    QVERIFY(object->property("pass").toBool());
+    QVERIFY(object->qjsvalue().strictlyEquals(value));
+}
+
 void tst_qdeclarativeecmascript::moduleApi_data()
 {
     QTest::addColumn<QUrl>("testfile");