Add minimal QPermission auto-test

To be extended as neeeded.

Pick-to: 6.5
Change-Id: I57d2f55f67de073fe3e4916b7ba655342cf661dc
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

tests/auto/corelib/kernel/CMakeLists.txt

@@ -47,6 +47,9 @@ if(WIN32)
     add_subdirectory(qwineventnotifier)
     add_subdirectory(qwinregistrykey)
 endif()
+if(QT_FEATURE_permissions)
+    add_subdirectory(qpermission)
+endif()
 if(QT_FEATURE_private_tests)
     add_subdirectory(qproperty)
 endif()

tests/auto/corelib/kernel/qpermission/.gitignore

@@ -0,0 +1 @@
+tst_qpermission

tests/auto/corelib/kernel/qpermission/CMakeLists.txt

@@ -0,0 +1,13 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+if (NOT QT_FEATURE_permissions)
+    return()
+endif()
+
+qt_internal_add_test(tst_qpermission
+    SOURCES
+        tst_qpermission.cpp
+    LIBRARIES
+        Qt::Core
+)

tests/auto/corelib/kernel/qpermission/tst_qpermission.cpp

@@ -0,0 +1,65 @@
+// Copyright (C) 2022 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include <QPermission>
+
+#include <QTest>
+
+struct DummyPermission // a minimal QPermission-compatible type
+{
+    using QtPermissionHelper = void;
+    int state = 0;
+};
+Q_DECLARE_METATYPE(DummyPermission)
+
+class tst_QPermission : public QObject
+{
+    Q_OBJECT
+private Q_SLOTS:
+    void converting_Dummy() const { return converting_impl<DummyPermission>(); }
+    void converting_Location() const { return converting_impl<QLocationPermission>(); }
+    void converting_Calendar() const { return converting_impl<QCalendarPermission>(); }
+    void converting_Contacts() const { return converting_impl<QContactsPermission>(); }
+    void converting_Camera() const { return converting_impl<QCameraPermission>(); }
+    void converting_Microphone() const { return converting_impl<QMicrophonePermission>(); }
+    void converting_Bluetooth() const { return converting_impl<QBluetoothPermission>(); }
+
+private:
+    template <typename T>
+    void converting_impl() const;
+};
+
+template <typename T>
+void tst_QPermission::converting_impl() const
+{
+    T concrete;
+    const T cconcrete = concrete;
+    const auto metaType = QMetaType::fromType<T>();
+
+    // construction is implicit:
+    // from rvalue:
+    {
+        QPermission p = T();
+        QCOMPARE_EQ(p.type(), metaType);
+    }
+    // from mutable lvalue:
+    {
+        QPermission p = concrete;
+        QCOMPARE_EQ(p.type(), metaType);
+    }
+    // from const lvalue:
+    {
+        QPermission p = cconcrete;
+        QCOMPARE_EQ(p.type(), metaType);
+    }
+
+    // data<>() compiles:
+    {
+        const QPermission p = concrete;
+        [[maybe_unused]] auto r = p.data<T>();
+        static_assert(std::is_same_v<decltype(r), T>);
+    }
+}
+
+QTEST_APPLESS_MAIN(tst_QPermission)
+#include "tst_qpermission.moc"