Cleanup handling of errors in bindings and scripts

QML used to silently ignore a log of errors - such as a failed assignment
to a QObject property.  These errors are now all reported as exceptions
in JavaScript.

Other questionable activities, like assigning a JavaScript array to a
"property var" property which appeared to work, thanks to QtScript's
transparent conversion of arrays to a QVariantList, are now blocked
entirely.

QTBUG-9152 QTBUG-9382 QTBUG-9341 QTBUG-6886

1 files changed, 28 insertions, 0 deletions

diff --git a/tests/auto/declarative/qdeclarativeecmascript/data/propertyAssignmentErrors.qml b/tests/auto/declarative/qdeclarativeecmascript/data/propertyAssignmentErrors.qml
new file mode 100644
index 0000000..483179a
--- /dev/null
+++ b/tests/auto/declarative/qdeclarativeecmascript/data/propertyAssignmentErrors.qml
@@ -0,0 +1,28 @@
+import Qt 4.6
+
+QtObject {
+    id: root
+
+    property int a
+    property var b
+
+    Component.onCompleted: {
+        try {
+            root.a = undefined;
+        } catch(e) {
+            console.log (e.fileName + ":" + e.lineNumber + ":" + e);
+        }
+
+        try {
+            root.b = [ 10, root ]
+        } catch(e) {
+            console.log (e.fileName + ":" + e.lineNumber + ":" + e);
+        }
+
+        try {
+            root.a = "Hello";
+        } catch(e) {
+            console.log (e.fileName + ":" + e.lineNumber + ":" + e);
+        }
+    }
+}