Fix QLEServiceData comparison operator inconsistency

The comparison operators usually have const& parameters.

Change-Id: Ibd8e7d1fe5704b4de3a0bfabe1bbc991411eecba
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@theqtcompany.com>
Reviewed-by: Christian Kandeler <christian.kandeler@theqtcompany.com>

src/bluetooth/qlowenergyservicedata.cpp

@@ -201,7 +201,7 @@ bool QLowEnergyServiceData::isValid() const
    Returns \c true if \a sd1 and \a sd2 are equal with respect to their public state,
    otherwise returns \c false.
  */
-bool operator==(const QLowEnergyServiceData sd1, const QLowEnergyServiceData &sd2)
+bool operator==(const QLowEnergyServiceData &sd1, const QLowEnergyServiceData &sd2)
 {
     return sd1.d == sd2.d || (sd1.type() == sd2.type() && sd1.uuid() == sd2.uuid()
                               && sd1.includedServices() == sd2.includedServices()

src/bluetooth/qlowenergyservicedata.h

@@ -52,7 +52,7 @@ struct QLowEnergyServiceDataPrivate;
 
 class Q_BLUETOOTH_EXPORT QLowEnergyServiceData
 {
-    friend Q_BLUETOOTH_EXPORT bool operator==(const QLowEnergyServiceData sd1,
+    friend Q_BLUETOOTH_EXPORT bool operator==(const QLowEnergyServiceData &sd1,
                                               const QLowEnergyServiceData &sd2);
 public:
     QLowEnergyServiceData();
@@ -84,9 +84,9 @@ private:
     QSharedDataPointer<QLowEnergyServiceDataPrivate> d;
 };
 
-Q_BLUETOOTH_EXPORT bool operator==(const QLowEnergyServiceData sd1,
+Q_BLUETOOTH_EXPORT bool operator==(const QLowEnergyServiceData &sd1,
                                    const QLowEnergyServiceData &sd2);
-inline bool operator!=(const QLowEnergyServiceData sd1, const QLowEnergyServiceData &sd2)
+inline bool operator!=(const QLowEnergyServiceData &sd1, const QLowEnergyServiceData &sd2)
 {
     return !(sd1 == sd2);
 }

tests/auto/qlowenergycontroller-gattserver/test/tst_qlowenergycontroller-gattserver.cpp

@@ -575,6 +575,20 @@ void TestQLowEnergyControllerGattServer::serviceData()
                                      << charData << QLowEnergyCharacteristicData());
     QCOMPARE(secondaryData.characteristics(), QList<QLowEnergyCharacteristicData>() << charData);
 
+    QLowEnergyServiceData backupData;
+    backupData.setUuid(QBluetoothUuid::SerialPort);
+    QCOMPARE(backupData.uuid(), QBluetoothUuid(QBluetoothUuid::SerialPort));
+    QVERIFY(backupData.isValid());
+    QVERIFY(backupData != QLowEnergyServiceData());
+
+    backupData.setType(QLowEnergyServiceData::ServiceTypeSecondary);
+    QCOMPARE(backupData.type(), QLowEnergyServiceData::ServiceTypeSecondary);
+
+    backupData.setCharacteristics(QList<QLowEnergyCharacteristicData>()
+                                     << charData << QLowEnergyCharacteristicData());
+    QCOMPARE(backupData.characteristics(), QList<QLowEnergyCharacteristicData>() << charData);
+    QVERIFY(backupData == secondaryData);
+
 #ifdef Q_OS_DARWIN
     QSKIP("GATT server functionality not implemented for Apple platforms");
 #endif