From 0b863bca305ad43b3c48287ec4e62e262c8e8849 Mon Sep 17 00:00:00 2001
From: Ulf Hermann <ulf.hermann@qt.io>
Date: Thu, 20 Dec 2018 18:58:10 +0100
Subject: QML: Special case null as binding type

This gives us the opportunity to map the JavaScript null to QVariant's
concept of isNull().

[ChangeLog][QML] Assigning JavaScript null to incompatibly typed
properties generates a compile error now, rather than a runtime error.

Fixes: QTBUG-72098
Change-Id: I72fd1c30d84128c774230eaaea10455b2a0e064c
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
---
 tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp')

diff --git a/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp b/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp
index 085cd5ffd0..e247ed4eff 100644
--- a/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp
+++ b/tests/auto/qml/qqmlecmascript/tst_qqmlecmascript.cpp
@@ -5991,6 +5991,13 @@ void tst_qqmlecmascript::nullObjectInitializer()
         QVERIFY(value.userType() == qMetaTypeId<QObject*>());
         QVERIFY(!value.value<QObject*>());
     }
+
+    {
+        QQmlComponent component(&engine, testFileUrl("qmlVarNullBinding.qml"));
+        QScopedPointer<QObject> obj(component.create());
+        QVERIFY(!obj.isNull());
+        QVERIFY(!obj->property("signalSeen").toBool());
+    }
 }
 
 // Test that bindings don't evaluate once the engine has been destroyed
-- 
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