Improve error message for broken QML_SINGLETON

The current error message doesn't cover the case where the class with
the QML_SINGLETON is an abstract class. This will still compile but fail
at runtime with an error message not mentioning this case.

Change-Id: I134254b252ca3c2250e5f5bc2ac9f9d79a2658fd
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

1 files changed, 21 insertions, 21 deletions

diff --git a/tests/auto/qml/qmltyperegistrar/tst_qmltyperegistrar.cpp b/tests/auto/qml/qmltyperegistrar/tst_qmltyperegistrar.cpp
index 24ba0da26d..563c88f850 100644
--- a/tests/auto/qml/qmltyperegistrar/tst_qmltyperegistrar.cpp
+++ b/tests/auto/qml/qmltyperegistrar/tst_qmltyperegistrar.cpp
@@ -540,45 +540,45 @@ void tst_qmltyperegistrar::uncreatable()
 #if QT_DEPRECATED_SINCE(6, 4)
     QTest::ignoreMessage(
                 QtWarningMsg,
-                "Singleton SingletonIncreatable needs either a default constructor or, "
-                "when adding a default constructor is infeasible, a public static "
-                "create(QQmlEngine *, QJSEngine *) method.");
+                "Singleton SingletonIncreatable needs to be a concrete class with either a "
+                "default constructor or, when adding a default constructor is infeasible, "
+                "a public static create(QQmlEngine *, QJSEngine *) method.");
     qmlRegisterTypesAndRevisions<SingletonIncreatable>("A", 1);
     QTest::ignoreMessage(
                 QtWarningMsg,
-                "Singleton SingletonIncreatable2 needs either a default constructor or, "
-                "when adding a default constructor is infeasible, a public static "
-                "create(QQmlEngine *, QJSEngine *) method.");
+                "Singleton SingletonIncreatable2 needs to be a concrete class with either a "
+                "default constructor or, when adding a default constructor is infeasible, "
+                "a public static create(QQmlEngine *, QJSEngine *) method.");
     qmlRegisterTypesAndRevisions<SingletonIncreatable2>("A", 1);
     QTest::ignoreMessage(
                 QtWarningMsg,
-                "Singleton SingletonIncreatable3 needs either a default constructor or, "
-                "when adding a default constructor is infeasible, a public static "
-                "create(QQmlEngine *, QJSEngine *) method.");
+                "Singleton SingletonIncreatable3 needs to be a concrete class with either a "
+                "default constructor or, when adding a default constructor is infeasible, "
+                "a public static create(QQmlEngine *, QJSEngine *) method.");
     qmlRegisterTypesAndRevisions<SingletonIncreatable3>("A", 1);
     QTest::ignoreMessage(
                 QtWarningMsg,
-                "Singleton SingletonIncreatable4 needs either a default constructor or, "
-                "when adding a default constructor is infeasible, a public static "
-                "create(QQmlEngine *, QJSEngine *) method.");
+                "Singleton SingletonIncreatable4 needs to be a concrete class with either a "
+                "default constructor or, when adding a default constructor is infeasible, "
+                "a public static create(QQmlEngine *, QJSEngine *) method.");
     qmlRegisterTypesAndRevisions<SingletonIncreatable4>("A", 1);
     QTest::ignoreMessage(
                 QtWarningMsg,
-                "Singleton SingletonIncreatableExtended needs either a default constructor or, "
-                "when adding a default constructor is infeasible, a public static "
-                "create(QQmlEngine *, QJSEngine *) method.");
+                "Singleton SingletonIncreatableExtended needs to be a concrete class with either a "
+                "default constructor or, when adding a default constructor is infeasible, "
+                "a public static create(QQmlEngine *, QJSEngine *) method.");
     qmlRegisterTypesAndRevisions<SingletonIncreatableExtended>("A", 1);
     QTest::ignoreMessage(
                 QtWarningMsg,
-                "Singleton SingletonForeign needs either a default constructor or, "
-                "when adding a default constructor is infeasible, a public static "
-                "create(QQmlEngine *, QJSEngine *) method.");
+                "Singleton SingletonForeign needs to be a concrete class with either a "
+                "default constructor or, when adding a default constructor is infeasible, "
+                "a public static create(QQmlEngine *, QJSEngine *) method.");
     qmlRegisterTypesAndRevisions<SingletonLocalUncreatable1>("A", 1);
     QTest::ignoreMessage(
                 QtWarningMsg,
-                "Singleton SingletonForeign needs either a default constructor or, "
-                "when adding a default constructor is infeasible, a public static "
-                "create(QQmlEngine *, QJSEngine *) method.");
+                "Singleton SingletonForeign needs to be a concrete class with either a "
+                "default constructor or, when adding a default constructor is infeasible, "
+                "a public static create(QQmlEngine *, QJSEngine *) method.");
     qmlRegisterTypesAndRevisions<SingletonLocalUncreatable2>("A", 1);
 #endif