QNI: Add supportedFeatures getter

Which just returns all the supported features

Change-Id: I8c3996b00a6ebb114bdbc9db3085a0e27fc8fa79
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>

src/network/kernel/qnetworkinformation.cpp

@@ -593,6 +593,16 @@ bool QNetworkInformation::supports(Features features) const
     return (d_func()->backend->featuresSupported() & features) == features;
 }
 
+/*!
+    \since 6.3
+
+    Returns all the supported features of the current backend.
+*/
+QNetworkInformation::Features QNetworkInformation::supportedFeatures() const
+{
+    return d_func()->backend->featuresSupported();
+}
+
 /*!
     Attempts to load a backend whose name matches \a backend
     (case insensitively).

src/network/kernel/qnetworkinformation.h

@@ -94,6 +94,7 @@ public:
     QString backendName() const;
 
     bool supports(Features features) const;
+    Features supportedFeatures() const;
 
     static bool load(QStringView backend);
     static bool load(Features features);

tests/auto/network/kernel/qnetworkinformation/tst_qnetworkinformation.cpp

@@ -39,6 +39,7 @@ class tst_QNetworkInformation : public QObject
     Q_OBJECT
 private slots:
     void initTestCase();
+    void supportedFeatures();
     void reachability();
     void behindCaptivePortal();
     void transportMedium();
@@ -89,8 +90,9 @@ public:
 
     static QNetworkInformation::Features featuresSupportedStatic()
     {
-        return { QNetworkInformation::Feature::Reachability,
+        return { QNetworkInformation::Feature::Reachability
-                 QNetworkInformation::Feature::CaptivePortal };
+                 | QNetworkInformation::Feature::CaptivePortal
+                 | QNetworkInformation::Feature::TransportMedium };
     }
 
 private:
@@ -138,6 +140,22 @@ void tst_QNetworkInformation::cleanupTestCase()
     QVERIFY(!backends.contains(u"mock"));
 }
 
+void tst_QNetworkInformation::supportedFeatures()
+{
+    auto info = QNetworkInformation::instance();
+
+    auto allFeatures = QNetworkInformation::Features(
+            QNetworkInformation::Feature::CaptivePortal | QNetworkInformation::Feature::Reachability
+            | QNetworkInformation::Feature::TransportMedium);
+
+    QCOMPARE(info->supportedFeatures(), allFeatures);
+
+    QVERIFY(info->supports(allFeatures));
+    QVERIFY(info->supports(QNetworkInformation::Feature::CaptivePortal));
+    QVERIFY(info->supports(QNetworkInformation::Feature::Reachability));
+    QVERIFY(info->supports(QNetworkInformation::Feature::TransportMedium));
+}
+
 void tst_QNetworkInformation::reachability()
 {
     auto info = QNetworkInformation::instance();

tests/manual/qnetworkinformation/tst_qnetworkinformation.cpp

@@ -55,6 +55,7 @@ int main(int argc, char **argv)
     }
     QNetworkInformation *info = QNetworkInformation::instance();
     qDebug() << "Backend loaded:" << info->backendName();
+    qDebug() << "Supports:" << info->supportedFeatures();
     qDebug() << "Now you can make changes to the current network connection. Qt should see the "
                 "changes and notify about it.";
     QObject::connect(info, &QNetworkInformation::reachabilityChanged,