Added code to get bonded devices from adapter (#46)

* Added support for getBondedDevices

Author: fracturedpsyche

rxandroidble/src/main/java/com/polidea/rxandroidble/RxBleClient.java

@@ -6,6 +6,7 @@
 
 import com.polidea.rxandroidble.internal.RxBleLog;
 
+import java.util.Set;
 import java.util.UUID;
 
 import rx.Observable;
@@ -41,6 +42,8 @@ public static void setLogLevel(@RxBleLog.LogLevel int logLevel) {
      */
     public abstract RxBleDevice getBleDevice(@NonNull String macAddress);
 
+    public abstract Set<RxBleDevice> getBondedDevices();
+
     /**
      * Returns an infinite observable emitting BLE scan results.
      * Scan is automatically started and stopped based on the Observable lifecycle.

rxandroidble/src/main/java/com/polidea/rxandroidble/RxBleClientImpl.java

@@ -20,6 +20,7 @@
 import com.polidea.rxandroidble.internal.util.UUIDUtil;
 
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.Map;
 import java.util.Set;
 import java.util.UUID;
@@ -69,6 +70,17 @@ public RxBleDevice getBleDevice(@NonNull String macAddress) {
         return rxBleDeviceProvider.getBleDevice(macAddress);
     }
 
+    @Override
+    public Set<RxBleDevice> getBondedDevices() {
+        Set<RxBleDevice> rxBleDevices = new HashSet<>();
+        Set<BluetoothDevice> bluetoothDevices = rxBleAdapterWrapper.getBondedDevices();
+        for (BluetoothDevice bluetoothDevice : bluetoothDevices) {
+            rxBleDevices.add(getBleDevice(bluetoothDevice.getAddress()));
+        }
+
+        return rxBleDevices;
+    }
+
     @Override
     public Observable<RxBleScanResult> scanBleDevices(@Nullable UUID... filterServiceUUIDs) {
 

rxandroidble/src/main/java/com/polidea/rxandroidble/internal/util/RxBleAdapterWrapper.java

@@ -4,6 +4,8 @@
 import android.bluetooth.BluetoothDevice;
 import android.support.annotation.Nullable;
 
+import java.util.Set;
+
 public class RxBleAdapterWrapper {
 
     private final BluetoothAdapter bluetoothAdapter;
@@ -31,4 +33,8 @@ public boolean startLeScan(BluetoothAdapter.LeScanCallback leScanCallback) {
     public void stopLeScan(BluetoothAdapter.LeScanCallback leScanCallback) {
         bluetoothAdapter.stopLeScan(leScanCallback);
     }
+
+    public Set<BluetoothDevice> getBondedDevices() {
+        return bluetoothAdapter.getBondedDevices();
+    }
 }

rxandroidble/src/test/groovy/com/polidea/rxandroidble/MockRxBleAdapterWrapper.groovy

@@ -3,6 +3,7 @@ package com.polidea.rxandroidble
 import android.bluetooth.BluetoothAdapter
 import android.bluetooth.BluetoothDevice
 import com.polidea.rxandroidble.internal.util.RxBleAdapterWrapper
+import org.apache.maven.artifact.versioning.OverConstrainedVersionException
 
 class MockRxBleAdapterWrapper extends RxBleAdapterWrapper {
 
@@ -19,6 +20,7 @@ class MockRxBleAdapterWrapper extends RxBleAdapterWrapper {
     }
 
     private List<ScanData> scanDataList = new ArrayList<>()
+    private Set<BluetoothDevice> bondedDevices = new HashSet<>()
 
     MockRxBleAdapterWrapper() {
         super(null)
@@ -32,6 +34,10 @@ class MockRxBleAdapterWrapper extends RxBleAdapterWrapper {
         scanDataList.add(new ScanData(bluetoothDevice, rssi, scanResult))
     }
 
+    def addBondedDevice(BluetoothDevice bluetoothDevice) {
+        bondedDevices.add(bluetoothDevice)
+    }
+
     @Override
     BluetoothDevice getRemoteDevice(String macAddress) {
         scanDataList.find {
@@ -63,4 +69,9 @@ class MockRxBleAdapterWrapper extends RxBleAdapterWrapper {
     void stopLeScan(BluetoothAdapter.LeScanCallback leScanCallback) {
 
     }
+
+    @Override
+    Set<BluetoothDevice> getBondedDevices() {
+        return bondedDevices
+    }
 }

rxandroidble/src/test/groovy/com/polidea/rxandroidble/RxBleClientTest.groovy

@@ -49,6 +49,20 @@ class RxBleClientTest extends Specification {
         )
     }
 
+    def "should return bonded devices"() {
+        given:
+        bluetoothDeviceBonded("AA:AA:AA:AA:AA:AA")
+        bluetoothDeviceBonded("BB:BB:BB:BB:BB:BB")
+        bluetoothDeviceDiscovered deviceMac: "AA:AA:AA:AA:AA:AA", rssi: 0, scanRecord: [] as byte[]
+        bluetoothDeviceDiscovered deviceMac: "BB:BB:BB:BB:BB:BB", rssi: 50, scanRecord: [] as byte[]
+
+        when:
+        def results = objectUnderTest.getBondedDevices()
+
+        then:
+        assert results.size() == 2
+    }
+
     def "should start BLE scan if subscriber subscribes to the scan observable"() {
         given:
         TestSubscriber testSubscriber = new TestSubscriber<>()
@@ -335,6 +349,13 @@ class RxBleClientTest extends Specification {
         bleAdapterWrapperSpy.addScanResult(mock, scanData['rssi'], scanData['scanRecord'])
     }
 
+    def bluetoothDeviceBonded(String address) {
+        def mock = Mock(BluetoothDevice)
+        mock.getAddress() >> address
+        mock.hashCode() >> address.hashCode()
+        bleAdapterWrapperSpy.addBondedDevice(mock);
+    }
+
     /**
      * This test reproduces issue: https://github.com/Polidea/RxAndroidBle/issues/17
      * It first calls startLeScan method which takes 100ms to finish