Adding BluetoothTestBase::CheckNotifySessionValue() method

device/bluetooth/test/bluetooth_test.h

Index: device/bluetooth/test/bluetooth_test.h
diff --git a/device/bluetooth/test/bluetooth_test.h b/device/bluetooth/test/bluetooth_test.h
index 52b6224174cf9a314d7a3983ab59dd6ff4fec8b2..7490800cbb739ce7acc65f3d71c03a11ae3a319a 100644
--- a/device/bluetooth/test/bluetooth_test.h
+++ b/device/bluetooth/test/bluetooth_test.h
@@ -56,6 +56,12 @@ class BluetoothTestBase : public testing::Test {
     HEART_RATE_DEVICE,
   };
 
+  enum class NotifyValueState {
+    NONE,
+    NOTIFY,
+    INDICATE,
+  };
+
   static const std::string kTestAdapterName;
   static const std::string kTestAdapterAddress;
 
@@ -401,6 +407,13 @@ class BluetoothTestBase : public testing::Test {
   virtual void SimulateGattDescriptorWriteWillFailSynchronouslyOnce(
       BluetoothRemoteGattDescriptor* descriptor) {}
 
+  // Tests if the notify value attemps.
+  virtual void ExpectedChangeNotifyValueAttempts(int attempts);
+
+  // Tests if the notify session has been changed. The default implementation
+  // uses descriptors.
+  virtual void ExpectedNotifyValue(NotifyValueState expected_value_state);
+
   // Returns a list of local GATT services registered with the adapter.
   virtual std::vector<BluetoothLocalGattService*> RegisteredGattServices();
 
@@ -465,7 +478,7 @@ class BluetoothTestBase : public testing::Test {
       bool error_in_reentrant);
 
   // Reset all event count members to 0.
-  void ResetEventCounts();
+  virtual void ResetEventCounts();
 
   void RemoveTimedOutDevices();
 
@@ -488,7 +501,6 @@ class BluetoothTestBase : public testing::Test {
   int gatt_connection_attempts_ = 0;
   int gatt_disconnection_attempts_ = 0;
   int gatt_discovery_attempts_ = 0;
-  int gatt_notify_characteristic_attempts_ = 0;
   int gatt_read_characteristic_attempts_ = 0;
   int gatt_write_characteristic_attempts_ = 0;
   int gatt_read_descriptor_attempts_ = 0;