QML: Improve the JS-to-JS type check when enforcing signatures

We do not have to coerce via the C++ type. Rather, we match the
JavaScript representations of the types and coerce as needed.

Task-number: QTBUG-113527
Change-Id: Id5c30cd46293f2d7aedd699f141a9fe19511b622
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>

1 files changed, 4 insertions, 1 deletions

diff --git a/tests/auto/qml/qqmllanguage/data/signatureEnforced.qml b/tests/auto/qml/qqmllanguage/data/signatureEnforced.qml
index e2ddd75b55..ec00d5d2b3 100644
--- a/tests/auto/qml/qqmllanguage/data/signatureEnforced.qml
+++ b/tests/auto/qml/qqmllanguage/data/signatureEnforced.qml
@@ -8,7 +8,7 @@ QtObject {
     property withLength withLength: 5
 
     function a(r: rect) {
-        r.x = 77 // does not write back
+        r.x = 77 // does write back, but this is an evil thing to do.
     }
 
     function b(s: string) : int {
@@ -28,8 +28,11 @@ QtObject {
     property int n: c(99) // creates a withLength
     property int o: rect.y
 
+    function bad(b: int) { return b }
+
     Component.onCompleted: {
         a(rect)
         d(rect)
+        bad(15)
     }
 }