Update unittests

TESTS/network/emac/emac_TestNetworkStack.cpp

@@ -155,6 +155,11 @@ char *EmacTestNetworkStack::Interface::get_mac_address(char *buf, nsapi_size_t b
     return NULL;
 }
 
+nsapi_error_t EmacTestNetworkStack::Interface::set_mac_address(uint8_t *buf, nsapi_size_t buflen)
+{
+    return NSAPI_ERROR_OK;
+}
+
 nsapi_error_t EmacTestNetworkStack::Interface::get_ip_address(SocketAddress *address)
 {
     return NSAPI_ERROR_OK;

TESTS/network/emac/emac_TestNetworkStack.h

@@ -84,7 +84,9 @@ public:
          *
          * @return              MAC address as "V:W:X:Y:Z"
          */
-        virtual char *get_mac_address(char *buf, nsapi_size_t buflen);
+        //virtual char *get_mac_address(char *buf, nsapi_size_t buflen);
+
+        virtual nsapi_error_t set_mac_address(uint8_t *mac_addr, nsapi_size_t addr_len);
 
         /** Copies IP address of the network interface to user supplied buffer
          *

UNITTESTS/features/netsocket/NetworkInterface/test_NetworkInterface.cpp

@@ -75,6 +75,12 @@ TEST_F(TestNetworkInterface, get_mac_address)
     EXPECT_EQ(iface->get_mac_address(), n);
 }
 
+TEST_F(TestNetworkInterface, set_mac_address)
+{
+    uint8_t mac_buf[8];
+    EXPECT_EQ(iface->set_mac_address(mac_buf, 8), NSAPI_ERROR_UNSUPPORTED);
+}
+
 TEST_F(TestNetworkInterface, get_ip_address)
 {
     SocketAddress addr;

UNITTESTS/stubs/NetworkInterface_stub.cpp

@@ -26,6 +26,11 @@ const char *NetworkInterface::get_mac_address()
     return 0;
 }
 
+nsapi_error_t NetworkInterface::set_mac_address(uint8_t *mac_addr, nsapi_size_t addr_len)
+{
+    return NSAPI_ERROR_UNSUPPORTED;
+}
+
 nsapi_error_t NetworkInterface::get_ip_address(SocketAddress *)
 {
     return NSAPI_ERROR_UNSUPPORTED;