Ensure context is valid before VME method creation

Ensure that a valid context exists prior to evaluation of a VME method
function.  Invalid contexts can occur if a method's first invocation is
triggered after the destruction of the component's context.

Task-number: QTBUG-25516
Change-Id: I349a73c5713e178f920c44f5ddcaa1dc6eec199f
Reviewed-by: Chris Adams <christopher.adams@nokia.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/tests/auto/qml/qqmlcontext/tst_qqmlcontext.cpp b/tests/auto/qml/qqmlcontext/tst_qqmlcontext.cpp
index 16365eeaa8..55f93c62c9 100644
--- a/tests/auto/qml/qqmlcontext/tst_qqmlcontext.cpp
+++ b/tests/auto/qml/qqmlcontext/tst_qqmlcontext.cpp
@@ -71,6 +71,8 @@ private slots:
     void refreshExpressionsRootContext();
 
     void qtbug_22535();
+    void evalAfterInvalidate();
+
 private:
     QQmlEngine engine;
 };
@@ -647,6 +649,16 @@ void tst_qqmlcontext::qtbug_22535()
     delete o;
 }
 
+void tst_qqmlcontext::evalAfterInvalidate()
+{
+    QQmlEngine engine;
+    QQmlComponent component(&engine, testFileUrl("evalAfterInvalidate.qml"));
+    QScopedPointer<QObject> o(component.create());
+
+    QCoreApplication::sendPostedEvents(0, QEvent::DeferredDelete);
+    QCoreApplication::processEvents();
+}
+
 QTEST_MAIN(tst_qqmlcontext)
 
 #include "tst_qqmlcontext.moc"