test_files: Test decoder also with ff-padded input

It's customary in the SIM card universe to right-pad data with ff bytes.
So far we only test decoders without such padding, which is unrealistic.
Let's also tests the decoders with extra 'ff' padding present.

For some files this doesn't make sense, so we add a _test_no_pad class
attribute that can be spcified to prevent this new "test with ff-padding"
from being executed for the test data of the class.

Change-Id: I7f5cbb4a6f91040fe9adef9da0a1f30f9f156dae

pySim/cdma_ruim.py

@@ -117,6 +117,7 @@ class EF_AD(TransparentEF):
     _test_de_encode = [
         ( "000000", { 'ms_operation_mode' : 'normal', 'additional_info' : '0000', 'rfu' : '' } ),
     ]
+    _test_no_pad = True
 
     class OP_MODE(enum.IntEnum):
         normal = 0x00

pySim/ts_102_221.py

@@ -639,6 +639,7 @@ class EF_PL(TransRecEF):
         ( '656e', "en" ),
         ( 'ffff', None ),
     ]
+
     def __init__(self, fid='2f05', sfid=0x05, name='EF.PL', desc='Preferred Languages'):
         super().__init__(fid, sfid=sfid, name=name,
                          desc=desc, rec_len=2, size=(2, None))

pySim/ts_31_102.py

@@ -526,6 +526,7 @@ class EF_ECC(LinFixedEF):
                                               "marine_guard": False, "mountain_rescue": False,
                                               "manual_ecall": False, "automatic_ecall": False } } ),
     ]
+    _test_no_pad = True
     cc_construct = BcdAdapter(Rpad(Bytes(3)))
     category_construct = FlagsEnum(Byte, police=1, ambulance=2, fire_brigade=3, marine_guard=4,
                                    mountain_rescue=5, manual_ecall=6, automatic_ecall=7)
@@ -588,6 +589,8 @@ class EF_AD(TransparentEF):
                                              "prose_services": False, "extended_drx": False },
                         "rfu": 0, "mnc_len": 2, "extensions": b'' } ),
     ]
+    _test_no_pad = True
+
     class OP_MODE(enum.IntEnum):
         normal = 0x00
         type_approval = 0x80

pySim/ts_51_011.py

@@ -141,6 +141,7 @@ class EF_ADN(LinFixedEF):
                                                                            "numbering_plan_id": "isdn_e164"},
                "dialing_nr": "491721217212", "cap_conf_id": 255, "ext1_record_id": 255} )
         ]
+    _test_no_pad = True
 
     def __init__(self, fid='6f3a', sfid=None, name='EF.ADN', desc='Abbreviated Dialing Numbers', ext=1, **kwargs):
         super().__init__(fid, sfid=sfid, name=name, desc=desc, rec_len=(14, 30), **kwargs)
@@ -215,6 +216,7 @@ class EF_SMSP(LinFixedEF):
                             "call_number": "" },
             "tp_pid": "00", "tp_dcs": "00", "tp_vp_minutes": 1440 } ),
     ]
+    _test_no_pad = True
     class ValidityPeriodAdapter(Adapter):
         def _decode(self, obj, context, path):
             if obj <= 143:
@@ -565,6 +567,8 @@ class EF_AD(TransparentEF):
             ( "00ffff",
               { "ms_operation_mode": "normal", "rfu1": 255, "rfu2": 127, "ofm": True, "extensions": None } ),
         ]
+    _test_no_pad = True
+
     class OP_MODE(enum.IntEnum):
         normal = 0x00
         type_approval = 0x80
@@ -871,6 +875,8 @@ class EF_MWIS(LinFixedEF):
                           False}, "num_waiting_voicemail": 0, "num_waiting_fax": 0, "num_waiting_email": 0,
            "num_waiting_other": 0, "num_waiting_videomail": None} ),
     ]
+    _test_no_pad = True
+
     def __init__(self, fid='6fca', sfid=None, name='EF.MWIS', rec_len=(5, 6),
                  desc='Message Waiting Indication Status', **kwargs):
         super().__init__(fid, sfid=sfid, name=name, desc=desc, rec_len=rec_len, **kwargs)