Add QSensor::isFeatureSupported()

Now it is possible to check if a backend supports a specific feature.
During reviews of features like acceleration mode or duplicate skipping,
the issue was raised how to check if these features are actually
supported. The same is true for existing features like
QMagnetometer::returnGeoValues.

Change-Id: I47115d6c487bbcbb668a9021cdc7085e6780a67c
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Lorn Potter <lorn.potter@nokia.com>

3 files changed, 27 insertions, 0 deletions

diff --git a/tests/auto/qsensor/test_sensorimpl.cpp b/tests/auto/qsensor/test_sensorimpl.cpp
index 5b52d94a..72a0dbdf 100644
--- a/tests/auto/qsensor/test_sensorimpl.cpp
+++ b/tests/auto/qsensor/test_sensorimpl.cpp
@@ -117,3 +117,8 @@ void testsensorimpl::stop()
     }
 }
 
+bool testsensorimpl::isFeatureSupported(QSensor::Feature feature) const
+{
+    return (feature == QSensor::AlwaysOn || feature == QSensor::GeoValues);
+}
+
diff --git a/tests/auto/qsensor/test_sensorimpl.h b/tests/auto/qsensor/test_sensorimpl.h
index 37ccc136..1462ccba 100644
--- a/tests/auto/qsensor/test_sensorimpl.h
+++ b/tests/auto/qsensor/test_sensorimpl.h
@@ -56,6 +56,7 @@ public:
 
     void start();
     void stop();
+    bool isFeatureSupported(QSensor::Feature feature) const Q_DECL_OVERRIDE;
 
 signals:
     void emitBusyChanged();
diff --git a/tests/auto/qsensor/tst_qsensor.cpp b/tests/auto/qsensor/tst_qsensor.cpp
index 8025ab21..38c32e76 100644
--- a/tests/auto/qsensor/tst_qsensor.cpp
+++ b/tests/auto/qsensor/tst_qsensor.cpp
@@ -946,6 +946,27 @@ private slots:
         sensor2.start();
         QVERIFY(sensor2.isActive());
     }
+
+    void testSupportedFeatures()
+    {
+        TestSensor sensor;
+
+        // Not connected to backend - should report false for any feature
+        QVERIFY(!sensor.isConnectedToBackend());
+        QVERIFY(!sensor.isFeatureSupported(QSensor::AlwaysOn));
+        QVERIFY(!sensor.isFeatureSupported(QSensor::Buffering));
+        QVERIFY(!sensor.isFeatureSupported(QSensor::GeoValues));
+        QVERIFY(!sensor.isFeatureSupported(QSensor::FieldOfView));
+
+        // Connect to backend - according to the testsensorimpl implementation, AlwaysOn and
+        // GeoValues should be supported afterwards
+        QVERIFY(sensor.connectToBackend());
+
+        QVERIFY(sensor.isFeatureSupported(QSensor::AlwaysOn));
+        QVERIFY(!sensor.isFeatureSupported(QSensor::Buffering));
+        QVERIFY(sensor.isFeatureSupported(QSensor::GeoValues));
+        QVERIFY(!sensor.isFeatureSupported(QSensor::FieldOfView));
+    }
 };
 
 QT_END_NAMESPACE