UT reset_card.py: display the ATR before and after reset

This allows to get the cold and warm ATRs.

You need to use reset_card.py with one argument to use
SCardReconnect()

UnitaryTests/reset_card.py

@@ -18,6 +18,7 @@
 
 from smartcard.scard import *
 from smartcard.pcsc.PCSCExceptions import *
+from smartcard.util import toHexString
 import sys
 
 hresult, hcontext = SCardEstablishContext(SCARD_SCOPE_USER)
@@ -37,6 +38,13 @@
  SCARD_SHARE_SHARED, SCARD_PROTOCOL_ANY)
 if hresult != SCARD_S_SUCCESS:
  raise BaseSCardException(hresult)
+hresult, reader, state, protocol, atr = SCardStatus(hcard)
+if hresult != SCARD_S_SUCCESS:
+ raise BaseSCardException(hresult)
+print("reader:", reader)
+print("state:", hex(state))
+print("protocol:", protocol)
+print("atr:", toHexString(atr))
 
 if len(sys.argv) > 1:
  print("reset using SCardReconnect")
@@ -46,6 +54,14 @@
  SCARD_SHARE_EXCLUSIVE, SCARD_PROTOCOL_ANY, SCARD_RESET_CARD)
  if hresult != SCARD_S_SUCCESS:
  raise BaseSCardException(hresult)
+
+ hresult, reader, state, protocol, atr = SCardStatus(hcard)
+ if hresult != SCARD_S_SUCCESS:
+ raise BaseSCardException(hresult)
+ print("reader:", reader)
+ print("state:", hex(state))
+ print("protocol:", protocol)
+ print("atr:", toHexString(atr))
 else:
  print("reset using SCardDisconnect")