Required properties: Allow retroactive require specification

It is now possible to mark a property of a parent class as required in
the child by writing required <propertyName>

Change-Id: I9e9d58c7b5c00577b056e905b39744b2fa359ea0
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

1 files changed, 30 insertions, 0 deletions

diff --git a/tests/auto/qml/qqmllanguage/tst_qqmllanguage.cpp b/tests/auto/qml/qqmllanguage/tst_qqmllanguage.cpp
index 5027c0825f..b4ad9bd7b3 100644
--- a/tests/auto/qml/qqmllanguage/tst_qqmllanguage.cpp
+++ b/tests/auto/qml/qqmllanguage/tst_qqmllanguage.cpp
@@ -1675,6 +1675,36 @@ void tst_qqmllanguage::requiredProperty()
         QQmlComponent component(&engine, testFileUrl("requiredProperties.2.qml"));
         QVERIFY(!component.errors().empty());
     }
+    {
+        QQmlComponent component(&engine, testFileUrl("requiredProperties.4.qml"));
+        QScopedPointer<QObject> object(component.create());
+        QVERIFY(!component.errors().empty());
+        QVERIFY(component.errorString().contains("Required property objectName was not initialized"));
+    }
+    {
+        QQmlComponent component(&engine, testFileUrl("requiredProperties.3.qml"));
+        QScopedPointer<QObject> object(component.create());
+        QVERIFY(!component.errors().empty());
+        QVERIFY(component.errorString().contains("Required property i was not initialized"));
+    }
+    {
+        QQmlComponent component(&engine, testFileUrl("requiredProperties.5.qml"));
+        QScopedPointer<QObject> object(component.create());
+        QVERIFY(!component.errors().empty());
+        QVERIFY(component.errorString().contains("Required property i was not initialized"));
+    }
+    {
+        QQmlComponent component(&engine, testFileUrl("requiredProperties.6.qml"));
+        VERIFY_ERRORS(0);
+        QScopedPointer<QObject> object(component.create());
+        QVERIFY(object);
+    }
+    {
+        QQmlComponent component(&engine, testFileUrl("requiredProperties.7.qml"));
+        QScopedPointer<QObject> object(component.create());
+        QVERIFY(!component.errors().empty());
+        QVERIFY(component.errorString().contains("Property blub was marked as required but does not exist"));
+    }
 }
 
 class MyClassWithRequiredProperty : public QObject