Fix unit tests

Code review requested changes

UNITTESTS/stubs/LoRaMac_stub.cpp

@@ -37,6 +37,7 @@ loramac_mlme_indication_t *LoRaMac_stub::mlme_ind_ptr = NULL;
 device_class_t LoRaMac_stub::dev_class_value = CLASS_A;
 mbed::Callback<void(void)> LoRaMac_stub::_scheduling_failure_handler = NULL;
 LoRaWANTimeHandler *LoRaMac_stub::time_handler_ptr = NULL;
+lorawan_gps_time_t LoRaMac_stub::gps_time_value = 0;
 
 LoRaMac::LoRaMac()
     : _lora_time(),
@@ -510,12 +511,11 @@ lorawan_status_t LoRaMac::rejoin(join_req_type_t rejoin_type, bool is_forced, ui
 
 lorawan_gps_time_t LoRaMac::get_gps_time(void)
 {
-    return _lora_time.get_gps_time();
+    return LoRaMac_stub::gps_time_value;
 }
 
 void LoRaMac::set_gps_time(lorawan_gps_time_t gps_time)
 {
-    _lora_time.set_gps_time(gps_time);
 }
 
 lorawan_status_t LoRaMac::add_ping_slot_info_req()

UNITTESTS/stubs/LoRaMac_stub.h

@@ -38,4 +38,5 @@ extern loramac_mlme_indication_t *mlme_ind_ptr;
 extern device_class_t dev_class_value;
 extern mbed::Callback<void(void)> _scheduling_failure_handler;
 extern LoRaWANTimeHandler *time_handler_ptr;
+extern lorawan_gps_time_t gps_time_value;
 }

UNITTESTS/stubs/LoRaWANStack_stub.cpp

@@ -19,10 +19,13 @@
 #include <stdlib.h>
 
 #include "LoRaWANStack.h"
+#include "LoRaWANStack_stub.h"
 
 using namespace mbed;
 using namespace events;
 
+lorawan_gps_time_t LoRaWANStack_stub::gps_time_value = 0;
+
 /*****************************************************************************
  * Constructor                                                               *
  ****************************************************************************/
@@ -312,12 +315,11 @@ void LoRaWANStack::remove_device_time_request(void)
 
 lorawan_gps_time_t LoRaWANStack::get_current_gps_time()
 {
-    return _loramac.get_gps_time();
+    return LoRaWANStack_stub::gps_time_value;
 }
 
 void LoRaWANStack::set_current_gps_time(lorawan_gps_time_t gps_time)
 {
-    _loramac.set_gps_time(gps_time);
 }
 
 lorawan_status_t LoRaWANStack::add_ping_slot_info_request(uint8_t periodicity)

UNITTESTS/stubs/LoRaWANStack_stub.h

@@ -0,0 +1,20 @@
+/*
+ * Copyright (c) , Arm Limited and affiliates.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+namespace LoRaWANStack_stub {
+extern lorawan_gps_time_t gps_time_value;
+}