2 files changed, 56 insertions, 0 deletions
diff --git a/tests/auto/qml/qmltyperegistrar/tst_qmltyperegistrar.cpp b/tests/auto/qml/qmltyperegistrar/tst_qmltyperegistrar.cpp
index f7a29948a0..b752c4d6c1 100644
--- a/tests/auto/qml/qmltyperegistrar/tst_qmltyperegistrar.cpp
+++ b/tests/auto/qml/qmltyperegistrar/tst_qmltyperegistrar.cpp
@@ -161,4 +161,14 @@ void tst_qmltyperegistrar::metaTypesRegistered()
     verifyMetaType("Ccc*", "Ccc");
 }
 
+void tst_qmltyperegistrar::multiExtensions()
+{
+    QVERIFY(qmltypesData.contains("name: \"MultiExtension\""));
+    QVERIFY(qmltypesData.contains("prototype: \"MultiExtensionParent\""));
+    QVERIFY(qmltypesData.contains("name: \"MultiExtensionParent\""));
+    QVERIFY(qmltypesData.contains("extension: \"ExtensionA\""));
+    QVERIFY(qmltypesData.contains("extension: \"ExtensionB\""));
+    QVERIFY(qmltypesData.contains("interfaces: [\"Interface3\"]"));
+}
+
 QTEST_MAIN(tst_qmltyperegistrar)
diff --git a/tests/auto/qml/qmltyperegistrar/tst_qmltyperegistrar.h b/tests/auto/qml/qmltyperegistrar/tst_qmltyperegistrar.h
index 6267868375..40569879ec 100644
--- a/tests/auto/qml/qmltyperegistrar/tst_qmltyperegistrar.h
+++ b/tests/auto/qml/qmltyperegistrar/tst_qmltyperegistrar.h
@@ -37,10 +37,12 @@
 
 class Interface {};
 class Interface2 {};
+class Interface3 {};
 
 QT_BEGIN_NAMESPACE
 Q_DECLARE_INTERFACE(Interface, "io.qt.bugreports.Interface");
 Q_DECLARE_INTERFACE(Interface2, "io.qt.bugreports.Interface2");
+Q_DECLARE_INTERFACE(Interface3, "io.qt.bugreports.Interface3");
 QT_END_NAMESPACE
 
 
@@ -150,6 +152,49 @@ public:
     DerivedFromForeign(QObject *parent) : QTimeLine(1000, parent) {}
 };
 
+class ExtensionA : public QObject
+{
+    Q_OBJECT
+    QML_ANONYMOUS
+    Q_PROPERTY(int a READ a CONSTANT)
+public:
+    ExtensionA(QObject *parent = nullptr) : QObject(parent) {}
+    int a() const { return 'a'; }
+};
+
+class ExtensionB : public QObject
+{
+    Q_OBJECT
+    QML_ANONYMOUS
+    Q_PROPERTY(int b READ b CONSTANT)
+public:
+    ExtensionB(QObject *parent = nullptr) : QObject(parent) {}
+    int b() const { return 'b'; }
+};
+
+class MultiExtensionParent : public QObject, public Interface3
+{
+    Q_OBJECT
+    QML_ANONYMOUS
+    QML_EXTENDED(ExtensionA)
+    QML_IMPLEMENTS_INTERFACES(Interface3)
+    Q_PROPERTY(int p READ p CONSTANT)
+public:
+    MultiExtensionParent(QObject *parent = nullptr) : QObject(parent) {}
+    int p() const { return 'p'; }
+};
+
+class MultiExtension : public MultiExtensionParent
+{
+    Q_OBJECT
+    QML_ELEMENT
+    QML_EXTENDED(ExtensionB)
+    Q_PROPERTY(int e READ e CONSTANT)
+public:
+    MultiExtension(QObject *parent = nullptr) : MultiExtensionParent(parent) {}
+    int e() const { return 'e'; }
+};
+
 class tst_qmltyperegistrar : public QObject
 {
     Q_OBJECT
@@ -170,6 +215,7 @@ private slots:
     void namespacedElement();
     void derivedFromForeign();
     void metaTypesRegistered();
+    void multiExtensions();
 
 private:
     QByteArray qmltypesData;