bluetooth: Implement RSSI and Tx Power on macOS and Android

device/bluetooth/test/android/java/src/org/chromium/device/bluetooth/Fakes.java

Index: device/bluetooth/test/android/java/src/org/chromium/device/bluetooth/Fakes.java
diff --git a/device/bluetooth/test/android/java/src/org/chromium/device/bluetooth/Fakes.java b/device/bluetooth/test/android/java/src/org/chromium/device/bluetooth/Fakes.java
index 636e67c8d6bdefd702adb84d79b6041631a4d854..998450a3a49b79e304583e73de3cb9a86d215947 100644
--- a/device/bluetooth/test/android/java/src/org/chromium/device/bluetooth/Fakes.java
+++ b/device/bluetooth/test/android/java/src/org/chromium/device/bluetooth/Fakes.java
@@ -22,6 +22,8 @@ import org.chromium.base.Log;
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.base.annotations.JNINamespace;
 import org.chromium.components.location.LocationUtils;
+import org.chromium.device.bluetooth.test.TestRSSI;
+import org.chromium.device.bluetooth.test.TestTxPower;
 
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -41,6 +43,11 @@ import java.util.UUID;
 class Fakes {
     private static final String TAG = "cr.Bluetooth";
 
+    // Android uses Integer.MIN_VALUE to signal no Tx Power in advertisement
+    // packet.
+    // https://developer.android.com/reference/android/bluetooth/le/ScanRecord.html#getTxPowerLevel()
+    private static final int NO_TX_POWER = Integer.MIN_VALUE;
+
     /**
      * Sets the factory for LocationUtils to return an instance whose
      * hasAndroidLocationPermission and isSystemLocationSettingEnabled return
@@ -107,10 +114,11 @@ class Fakes {
                     uuids.add(ParcelUuid.fromString("00001800-0000-1000-8000-00805f9b34fb"));
                     uuids.add(ParcelUuid.fromString("00001801-0000-1000-8000-00805f9b34fb"));
 
-                    mFakeScanner.mScanCallback.onScanResult(ScanSettings.CALLBACK_TYPE_ALL_MATCHES,
+                    mFakeScanner.mScanCallback.onScanResult(
+                            ScanSettings.CALLBACK_TYPE_ALL_MATCHES,
                             new FakeScanResult(new FakeBluetoothDevice(this, "01:00:00:90:1E:BE",
                                                        "FakeBluetoothDevice"),
-                                                                    uuids));
+                                    TestRSSI.LOWEST, uuids, TestTxPower.LOWEST));
                     break;
                 }
                 case 2: {
@@ -118,10 +126,11 @@ class Fakes {
                     uuids.add(ParcelUuid.fromString("00001802-0000-1000-8000-00805f9b34fb"));
                     uuids.add(ParcelUuid.fromString("00001803-0000-1000-8000-00805f9b34fb"));
 
-                    mFakeScanner.mScanCallback.onScanResult(ScanSettings.CALLBACK_TYPE_ALL_MATCHES,
+                    mFakeScanner.mScanCallback.onScanResult(
+                            ScanSettings.CALLBACK_TYPE_ALL_MATCHES,
                             new FakeScanResult(new FakeBluetoothDevice(this, "01:00:00:90:1E:BE",
                                                        "FakeBluetoothDevice"),
-                                                                    uuids));
+                                    TestRSSI.LOWER, uuids, TestTxPower.LOWER));
                     break;
                 }
                 case 3: {
@@ -129,7 +138,8 @@ class Fakes {
                     mFakeScanner.mScanCallback.onScanResult(
                             ScanSettings.CALLBACK_TYPE_ALL_MATCHES,
                             new FakeScanResult(
-                                    new FakeBluetoothDevice(this, "01:00:00:90:1E:BE", ""), uuids));
+                                    new FakeBluetoothDevice(this, "01:00:00:90:1E:BE", ""),
+                                    TestRSSI.LOW, uuids, NO_TX_POWER));
 
                     break;
                 }
@@ -138,16 +148,18 @@ class Fakes {
                     mFakeScanner.mScanCallback.onScanResult(
                             ScanSettings.CALLBACK_TYPE_ALL_MATCHES,
                             new FakeScanResult(
-                                    new FakeBluetoothDevice(this, "02:00:00:8B:74:63", ""), uuids));
+                                    new FakeBluetoothDevice(this, "02:00:00:8B:74:63", ""),
+                                    TestRSSI.MEDIUM, uuids, NO_TX_POWER));
 
                     break;
                 }
                 case 5: {
                     ArrayList<ParcelUuid> uuids = null;
-                    mFakeScanner.mScanCallback.onScanResult(ScanSettings.CALLBACK_TYPE_ALL_MATCHES,
-                            new FakeScanResult(new FakeBluetoothDevice(
-                                                       this, "01:00:00:90:1E:BE", null),
-                                                                    uuids));
+                    mFakeScanner.mScanCallback.onScanResult(
+                            ScanSettings.CALLBACK_TYPE_ALL_MATCHES,
+                            new FakeScanResult(
+                                    new FakeBluetoothDevice(this, "01:00:00:90:1E:BE", null),
+                                    TestRSSI.HIGH, uuids, NO_TX_POWER));
                     break;
                 }
             }
@@ -273,12 +285,17 @@ class Fakes {
      */
     static class FakeScanResult extends Wrappers.ScanResultWrapper {
         private final FakeBluetoothDevice mDevice;
+        private final int mRssi;
+        private final int mTxPower;
         private final ArrayList<ParcelUuid> mUuids;
 
-        FakeScanResult(FakeBluetoothDevice device, ArrayList<ParcelUuid> uuids) {
+        FakeScanResult(
+                FakeBluetoothDevice device, int rssi, ArrayList<ParcelUuid> uuids, int txPower) {
             super(null);
             mDevice = device;
+            mRssi = rssi;
             mUuids = uuids;
+            mTxPower = txPower;
         }
 
         @Override
@@ -287,9 +304,19 @@ class Fakes {
         }
 
         @Override
+        public int getRssi() {
+            return mRssi;
+        }
+
+        @Override
         public List<ParcelUuid> getScanRecord_getServiceUuids() {
             return mUuids;
         }
+
+        @Override
+        public int getScanRecord_getTxPowerLevel() {
+            return mTxPower;
+        }
     }
 
     /**